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Revision 1.13 / (download) - annotate - [select for diffs], Thu Nov 14 15:25:31 2019 UTC (4 months, 2 weeks ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2020Q1-base, pkgsrc-2020Q1, pkgsrc-2019Q4-base, pkgsrc-2019Q4, HEAD
Changes since 1.12: +1 -5 lines
Diff to previous 1.12 (colored)

gstreamer1: update to 1.16.1

1.16.1

The first 1.16 bug-fix release (1.16.1) was released on 23 September 2019.

This release only contains bugfixes and it should be safe to update from 1.16.0.
Highlighted bugfixes in 1.16.1

    GStreamer-vaapi: fix green frames and decoding artefacts in some cases
    OpenGL: fix wayland event source burning CPU in certain circumstances
    Memory leak fixes and memory footprint improvements
    Performance improvements
    Stability and security fixes
    Fix enum for GST_MESSAGE_DEVICE_CHANGED which is technically an API break, but this is only used internally in GStreamer and duplicated another message enum
    hls: Make crypto dependency optional when hls-crypto is auto
    player: fix switching back and forth between forward and reverse playback
    decklinkaudiosink: Drop late buffers
    openh264enc: Fix compilation with openh264 v2.0
    wasapisrc: fix segtotal value being always 2
    android: Fix gnutls issue causing a FORTIFY crash on Android Q
    windows: Fix two crashes due to cross-CRT free when using MSVC

gstreamer core

    device: gst_device_create_element() is transfer floating, not transfer full
    filesink, fdsink: respect IOV_MAX for the writev iovec array (Solaris)
    miniobject: free qdata array when the last qdata is removed (reduces memory footprint)
    bin: Fix minor race when adding to a bin
    aggregator: Actually handle NEED_DATA return from update_src_caps()
    aggregator: Ensure that the source pad is created as a GstAggregatorPad if no type is given in the pad template
    latency: fix custom event leaks
    registry: Use plugin directory from the build system for relocateable Windows builds
    message: fix up enum value for GST_MESSAGE_DEVICE_CHANGED
    info: Fix deadlock in gst_ring_buffer_logger_log()
    downloadbuffer: Check for flush after seek
    identity: Non-live upstream have no max latency
    identity: Fix the ts-offset property getter
    aggregator: Make parsing of explicit sink pad names more robust
    bufferpool: Fix the buffer size reset code
    fakesink, fakesrc, identity: sync gst_buffer_get_flags_string() with new flags
    multiqueue: never unref queries we do not own
    concat: Reset last_stop on FLUSH_STOP too
    aggregator: fix flow-return boolean return type mismatch
    gstpad: Handle probes that reset the data field
    gst: Add support for g_autoptr(GstPromise)
    gst-inspect: fix unused-const-variable error in windows
    base: Include gstbitwriter.h in the single-include header
    Add various Since: 1.16 markers
    GST_MESSAGE_DEVICE_CHANGED duplicates GST_MESSAGE_REDIRECT
    Targetting wrong meson version
    meson: Make get_flex_version.py script executable
    meson: Link to objects instead of static helper library
    meson: set correct install path for gdb helper
    meson: fix warning about configure_file() install kwarg

gst-plugins-base

    video-info: parse field-order for all interleaved formats
    tests: fix up valgrind suppressions for glibc getaddrinfo leaks
    meson: Reenable NEON support (in audio resampler)
    audio-resampler: Update NEON to handle remainders not multiples of 4
    eglimage: Fix memory leak
    audiodecoder: Set output caps with negotiated caps to avoid critical info printed
    video-frame: Take TFF flag from the video info if it was set in there
    glcolorconvert: Fix external-oes shader
    video-anc: Fix ADF detection when trying to extract data from vanc
    gl/wayland: fix wayland event source burning CPU
    configure: add used attribute in order to make NEON detection working with -flto.
    audioaggregator: Return a valid rate range from caps query if downstream supports a whole range
    rtspconnection: data-offset increase not set
    rtpsconnection: Fix number of n_vectors
    video-color: Add compile-time assert for ColorimetryInfo enum
    audiodecoder: Fix leak on failed audio gaps
    glupload: Keep track of cached EGLImage texture format
    playsink: Set ts-offset to text sink.
    meson.build: use join_paths() on prefix
    compositor: copy frames as-is when possible
    compositor: Skip background when a pad obscures it completely
    rtspconnection: Start CSeq at 1 (some servers don't cope well with seqnum 0)
    viv-fb: fix build break for GST_GL_API
    gl/tests: fix shader creation tests part 2
    gl/tests: fix shader creation tests
    wayland: set the event queue also for the xdg_wm_base object
    video: Added GI annotation for gstvideoaffinetransformationmeta apply_matrix
    compositor: Remove unneeded left shift for ARGB/AYUV SOURCE operator
    Colorimetry fixes
    alsasrc: Don't use driver timestamp if it's zero
    gloverlaycompositor: fix crash if buffer doesn't have video meta
    meson: Don't try to find gio-unix on Windows
    glshader: fix default external-oes shaders
    subparse: fix pushing WebVTT cue with no newline at the end
    meson: Missing "android" choice in gl_winsys
    video test: Keep BE test inline with LE test
    id3tag: Correctly validate the year from v1 tags before passing to GstDateTime
    gl/wayland: Don't prefix wl_shell struct field
    eglimage: Add compatibility define for DRM_FORMAT_NV24
    Add various Since: 1.16 markers
    video-anc: Handle SD formats correctly
    Docs: add GL_CFLAGS to GTK_DOC_CFLAGS
    GL: using vaapi and showing on glimagesink on wayland loads one core for 100% on 1.16
    GL: external-oes shader places precision qualifier before #extension (was: androidmedia amcviddec fail after 1.15.90 1.16.0 update)

gst-plugins-good

    alpha: Fix one_over_kc calculation on arm/aarch64
    souphttpsrc: Fix incompatible type build warning
    rtpjitterbuffer: limit max-dropout-time to maxint32
    rtpjitterbuffer: Clear clock master before unreffing
    qtdemux: Use empty-array safe way to cleanup GPtrArray
    v4l2: Fix type compatibility issue with glibc 2.30
    valgrind: suppress Cond error coming from gnutls and Ignore leaks caused by shout/sethostent
    rtpfunnel: forward correct segment when switching pad
    gtkglsink: fix crash when widget is resized after element destruction
    jpegdec: Don't dereference NULL input state if we have no caps in TIME segments
    rtp: opuspay: fix memory leak in gst_rtp_opus_pay_setcaps
    v4l2videodec: return right type for drain.
    rtpssrcdemux: Avoid taking streamlock out-of-band
    Support v4l2src buffer orphaning
    splitmuxsink: Only set running time on finalizing sink element when in async-finalize mode
    rtpsession: Always keep at least one NACK on early RTCP
    rtspsrc: do not try to send EOS with invalid seqnum
    rtpsession: Call on-new-ssrc earlier
    rtprawdepay: Don't get rid of the buffer pool on FLUSH_STOP
    rtpbin: Free storage when freeing session
    scaletempo: Advertise interleaved layout in caps templates
    Support v4l2src buffer orphaning

gst-plugins-bad

    hls: Make crypto dependency optional when hls-crypto is auto
    player: fix switching back and forth between forward and reverse playback
    decklinkaudiosink: Drop late buffers
    srt: Add stats property, include sender-side statistics and fix a crash
    dshowsrcwrapper: fix regression on device selection
    tsdemux: Limit the maximum PES payload size
    wayland: Define libdrm_dep in meson.build to fix meson configure error when kms is disabled
    sctp: Fix crash on free() when using the MSVC binaries
    webrtc: Fix signals documentation
    h264parse: don't critical on VUI parameters > 2^31
    rtmp: Fix crash inside free() with MSVC on Windows
    iqa: fix leak of map_meta.data
    d3dvideosink: Fix crash on WinProc handler
    amc: Fix crash when a sync_meta survives its sink
    pitch: Fix race between putSamples() and setting soundtouch parameters
    webrtc: fix type of max-retransmits, make it work
    mxfdemux: Also allow picture essence element type 0x05 for VC-3
    wasapi: fix symbol redefinition build error
    decklinkvideosrc: Retrieve mode of the ancillary data from the frame
    decklinkaudiosrc/decklinkvideosrc: Do nothing in BaseSrc::negotiate() and...
    adaptivedemux: do not retry downloads during shutdown.
    webrtcbin: fix GInetAddress leak
    dtls: fix dtls connection object leak
    siren: fix a global buffer overflow spotted by asan
    kmssink: Fix implicit declaration build error
    Fix -Werror=return-type error in configure.
    aiff: Fix infinite loop in header parsing.
    nvdec: Fix possible frame drop on EOS
    srtserversrc: yields malformed rtp payloads
    srtsink: Fix crash in case no URI
    dtlsagent: Fix leaked dtlscertificate
    meson: bluez: Early terminate configure on Windows
    decklink: Correctly ensure >=16 byte alignment for the buffers we allocate
    webrtcbin: fix DTLS when receivebin is set to DROP
    zbar: Include running-time, stream-time and duration in the messages
    uvch264src: Make sure we set our segment
    avwait: Allow start and end timecode to be set back to NULL
    avwait: Don't print warnings for every buffer passed
    hls/meson: fix dependency logic
    Waylandsink gnome shell workaround
    avwait: Allow setting start timecode after end timecode; protect propeties with mutex
    wayland/wlbuffer: just return if used_by_compositor is true when attach
    proxy: Set SOURCE flag on the source and SINK flag on the sink
    ivfparse: Check the data size against IVF_FRAME_HEADER_SIZE
    webrtc: Add various Since markers to new types after 1.14.0
    msdk: fix the typo in debug category
    dtlsagent: Do not overwrite openssl locking callbacks
    meson: Fix typo in gsm header file name
    srt: handle races in state change
    webrtc: Add g_autoptr() support for public types
    openh264enc: Fix compilation with openh264 v2.0
    meson: Allow CUDA_PATH fallback on linux
    meson: fix build with opencv=enabled and opencv4. Fixes #964
    meson: Add support for the colormanagement plugin
    autotools: gstsctp: set LDFLAGS
    nvenc/nvdec: Add NVIDIA SDK headers to noinst_HEADERS
    h264parse: Fix typo when setting multiview mode and flags
    Add various Since: 1.16 markers
    opencv: allow compilation against 4.1.x
    Backport of some minor srt commits without MR into 1.16
    meson: fix build with opencv=enabled and opencv4
    wasapisrc: fix segtotal value being always 2 due to an unused variable
    meson: colormanagement missing
    androidmedia amcviddec fail after 1.15.90 1.16.0 update

gst-plugins-ugly

    meson: Always require the gmodule dependency

gst-libav

    docs: don't include the type hierarchy, fixing build with gtk-doc 1.30
    avvidenc: Correctly signal interlaced input to ffmpeg when the input caps are interlaced
    autotools: add bcrypt to win32 libs
    gstav: Use libavcodec util function for version check
    API documentation fails to build with gtk-doc 1.30

gst-rtsp-server

    rtsp-client: RTP Info must exist in PLAY response
    onvif-media: fix "void function returning a value" compiler warning
    Add various Since: 1.16 markers

gstreamer-vaapi

    fix egl context leak and display creation race
    pluginutil: Remove Mesa from drivers white list
    Classify vaapidecodebin as a hardware decoder
    Fix two leak
    vaapivideomemory: demote error message to info
    encoder: vp8,vp9: reset frame_counter when input frame's format changes
    encoder: mpeg2: No packed header for SPS and PPS
    decoder: vp9: clear parser pointer after release
    encoder: Fixes deadlock in change state function
    encoder: h265: reset num_ref_idx_l1_active_minus1 when low delay B.
    encoder: not call ensure_num_slices inside g_assert()
    encoder: continue if roi meta is NULL
    decoder: vp9: Set chroma_ ype by VP9 bit_depth
    vaapipostproc: don't do any color conversion when GL_TEXTURE_UPLOAD
    libs: surface: fix double free when dmabuf export fails
    h264 colors and artifacts upon upgrade to GStreamer Core Library version 1.15.90

gst-editing-services

    element: Properly handle the fact that pasting can return NULL
    Add various missing Since markers
    launch: Fix caps restriction short names
    python: Avoid warning about using deprecated methods
    video-transition: When using non crossfade effect use 'over' operations
    meson: Generate a pkgconfig file for the GES plugin

gst-devtools

    launcher: testsuites: skip systemclock stress tests
    validate: fix build on macOS

gst-build

    Update win flex bison binaries
    Update the flexmeson windows binary version
    Don't allow people to run meson inside the uninstalled env

Contributors to 1.16.1

Aaron Boxer, Adam Duskett, Alicia Boya García, Andoni Morales Alastruey, Antonio Ospite, Arun Raghavan, Askar Safin, A. Wilcox, Charlie Turner, Christoph Reiter, Damian Hobson-Garcia, Daniel Klamt, Danny Smith, David Gunzinger, David Ing, David Svensson Fors, Doug Nazar, Edward Hervey, Eike Hein, Fabrice Bellet, Fernando Herrrera, Georg Lippitsch, Göran Jönsson, Guillaume Desmottes, Haihao Xiang, Haihua Hu, Håvard Graff, Hou Qi, Ignacio Casal Quinteiro, Ilya Smelykh, Jan Schmidt, Javier Celaya, Jim Mason, Jonas Larsson, Jordan Petridis, Jose Antonio Santos Cadenas, Juan Navarro, Knut Andre Tidemann, Kristofer Björkström, Lucas Stach, Marco Felsch, Marcos Kintschner, Mark Nauwelaerts, Martin Liska, Martin Theriault, Mathieu Duponchelle, Matthew Waters, Michael Olbrich, Mike Gorse, Nicola Murino, Nicolas Dufresne, Niels De Graef, Niklas Hambüchen, Nirbheek Chauhan, Olivier Crête, Philippe Normand, Ross Burton, Sebastian Dröge, Seungha Yang, Song Bing, Thiago Santos, Thibault Saunier, Thomas Coldrick, Tim-Philipp Müller, Víctor Manuel Jáquez Leal, Vivia Nikolaidou, Xavier Claessens, Yeongjin Jeong,

... and many others who have contributed bug reports, translations, sent suggestions or helped testing. Thank you all!
List of merge requests and issues fixed in 1.16.1

    List of Merge Requests applied in 1.16
    List of Issues fixed in 1.16.1

Known Issues

    possibly breaking/incompatible changes to properties of wrapped FFmpeg decoders and encoders (see above).

    The way that GIO modules are named has changed due to upstream GLib natively adding support for loading static GIO modules. This means that any GStreamer application using gnutls for SSL/TLS on the Android or iOS platforms (or any other setup using static libraries) will fail to link looking for the g_io_module_gnutls_load_static() function. The new function name is now g_io_gnutls_load(gpointer data). See Android/iOS sections above for further details.

Revision 1.12 / (download) - annotate - [select for diffs], Wed May 29 20:51:47 2019 UTC (10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2019Q3-base, pkgsrc-2019Q3, pkgsrc-2019Q2-base, pkgsrc-2019Q2
Changes since 1.11: +42 -14 lines
Diff to previous 1.11 (colored)

gstreamer1: updated to 1.16.0

GStreamer 1.16.0:

Introduction
The GStreamer team is proud to announce a new major feature release in
the stable 1.x API series of your favourite cross-platform multimedia
framework!

As always, this release is again packed with many new features, bug
fixes and other improvements.

Highlights
-   GStreamer WebRTC stack gained support for data channels for
    peer-to-peer communication based on SCTP, BUNDLE support, as well as
    support for multiple TURN servers.
-   AV1 video codec support for Matroska and QuickTime/MP4 containers
    and more configuration options and supported input formats for the
    AOMedia AV1 encoder
-   Support for Closed Captions and other Ancillary Data in video
-   Support for planar (non-interleaved) raw audio
-   GstVideoAggregator, compositor and OpenGL mixer elements are now in
    -base
-   New alternate fields interlace mode where each buffer carries a
    single field
-   WebM and Matroska ContentEncryption support in the Matroska demuxer
-   new WebKit WPE-based web browser source element
-   Video4Linux: HEVC encoding and decoding, JPEG encoding, and improved
    dmabuf import/export
-   Hardware-accelerated Nvidia video decoder gained support for VP8/VP9
    decoding, whilst the encoder gained support for H.265/HEVC encoding.
-   Many improvements to the Intel Media SDK based hardware-accelerated
    video decoder and encoder plugin (msdk): dmabuf import/export for
    zero-copy integration with other components; VP9 decoding; 10-bit
    HEVC encoding; video post-processing (vpp) support including
    deinterlacing; and the video decoder now handles dynamic resolution
    changes.
-   The ASS/SSA subtitle overlay renderer can now handle multiple
    subtitles that overlap in time and will show them on screen
    simultaneously
-   The Meson build is now feature-complete (*) and it is now the
    recommended build system on all platforms. The Autotools build is
    scheduled to be removed in the next cycle.
-   The GStreamer Rust bindings and Rust plugins module are now
    officially part of upstream GStreamer.
-   The GStreamer Editing Services gained a gesdemux element that allows
    directly playing back serialized edit list with playbin or
    (uri)decodebin
-   Many performance improvements

Revision 1.11 / (download) - annotate - [select for diffs], Tue Apr 17 22:10:04 2018 UTC (23 months, 2 weeks ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2019Q1-base, pkgsrc-2019Q1, pkgsrc-2018Q4-base, pkgsrc-2018Q4, pkgsrc-2018Q3-base, pkgsrc-2018Q3, pkgsrc-2018Q2-base, pkgsrc-2018Q2
Changes since 1.10: +94 -3 lines
Diff to previous 1.10 (colored)

gstreamer1: update to 1.14.0

 The GStreamer team is proud to announce a new major feature release of your favourite cross-platform multimedia framework!

The 1.14 release series adds new features on top of the previous 1.12 series and is part of the API and ABI-stable 1.x release series of the GStreamer multimedia framework.

Highlights:

    WebRTC support: real-time audio/video streaming to and from web browsers
    Experimental support for the next-gen royalty-free AV1 video codec
    Video4Linux: encoding support, stable element names and faster device probing
    Support for the Secure Reliable Transport (SRT) video streaming protocol
    RTP Forward Error Correction (FEC) support (ULPFEC)
    RTSP 2.0 support in rtspsrc and gst-rtsp-server
    ONVIF audio backchannel support in gst-rtsp-server and rtspsrc
    playbin3 gapless playback and pre-buffering support
    tee, our stream splitter/duplication element, now does allocation query aggregation which is important for efficient data handling and zero-copy
    QuickTime muxer has a new prefill recording mode that allows file import in Adobe Premiere and FinalCut Pro while the file is still being written.
    rtpjitterbuffer fast-start mode and timestamp offset adjustment smoothing
    souphttpsrc connection sharing, which allows for connection reuse, cookie sharing, etc.
    nvdec: new plugin for hardware-accelerated video decoding using the NVIDIA NVDEC API
    Adaptive DASH trick play support
    ipcpipeline: new plugin that allows splitting a pipeline across multiple processes
    Major gobject-introspection annotation improvements for large parts of the library API
    GStreamer C# bindings have been revived and seen many updates and fixes
    The externally-maintained GStreamer Rust bindings have many usability improvements and cover most of the API now

Revision 1.10 / (download) - annotate - [select for diffs], Sun Apr 15 09:40:05 2018 UTC (23 months, 2 weeks ago) by adam
Branch: MAIN
Changes since 1.9: +12 -1 lines
Diff to previous 1.9 (colored)

gstreamer1: updated to 1.12.5

Bugs fixed in 1.12.5:

pad: fix some stream deactivation deadlocks/races
registrychunks: don't read from unaligned memory when loading registry
ptp: fix build failure with #undef USE_MEASUREMENT_FILTERING
downloadbuffer: Don't hold the mutex while posting the download-complete message
playbin3: Fix accessing invalid index in GstStream when received select-stream event
id3v2: re-fix handling of ID3 v2.4 tags with extended headers
audio: fix handling of U32BE format
videodecoder: Reset QoS time after pushing segment. This fixes playbin gapless playback with videos.
subparse: push out of last chunk of text if last line has no newline
aacparse: When parsing raw input, accept frames of any size. This fixes handling of encoded silence.
splitmuxsrc: Improve not-linked handling.
rtspsrc: also proxy multicast-iface property to RTCP udpsrc
flacdec: flush flac decoder on lost sync, so that it can re-sync.
matroskamux: Only mark new clusters as keyframe if they start on a keyframe or we're muxing only audio
matroskamux: Clip maximum cluster duration to the maximum possible value
h264parse: reset internal 'state' variable properly
x264enc: fix build with newer x264 with support for multiple bit depths
x265enc: Fix tagging of keyframes on output buffers
glimagesink: Correct PAR in output caps when transforming
vtdec: destroy and create the GL context on start()/stop(), fixing a refcount loop
player: fix criticals when reading info/track properties that are NULL
lv2: fix inverted boolean properties
rtponviftimestamp: fix state change function init/reset, fixing memory corruption or leaks on shutdown
libav: some build issues fixes
rtsp-server: Place netaddress meta on packets received via TCP. Fixes keep-alive via RTCP in TCP interleaved mode.
rtsp-server: gi annotation fixes
gst-libav: internal ffmpeg copy was updated to ffmpeg 3.3.6
Various fixes for memory leaks, deadlocks and crashes in all modules
... and many, many more!

Revision 1.9 / (download) - annotate - [select for diffs], Tue Sep 12 09:32:43 2017 UTC (2 years, 6 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2018Q1-base, pkgsrc-2018Q1, pkgsrc-2017Q4-base, pkgsrc-2017Q4, pkgsrc-2017Q3-base, pkgsrc-2017Q3
Changes since 1.8: +77 -67 lines
Diff to previous 1.8 (colored)

Update gstreamer1 and its plugins to 1.12.2.

Highlights

    new msdk plugin for Intel's Media SDK for hardware-accelerated
    video encoding and decoding on Intel graphics hardware on Windows
    or Linux.

    x264enc can now use multiple x264 library versions compiled for
    different bit depths at runtime, to transparently provide support
    for multiple bit depths.

    videoscale and videoconvert now support multi-threaded scaling
    and conversion, which is particularly useful with higher
    resolution video.

    h264parse will now automatically insert AU delimiters if needed
    when outputting byte-stream format, which improves standard
    compliance and is needed in particular for HLS playback on
    iOS/macOS.

    rtpbin has acquired bundle support for incoming streams

Major new features and changes Noteworthy new API

    The video library gained support for a number of new video
    formats:
        GBR_12LE, GBR_12BE, GBRA_12LE, GBRA_12BE (planar 4:4:4
        RGB/RGBA, 12 bits per channel) GBRA_10LE, GBRA_10BE (planar
        4:4:4:4 RGBA, 10 bits per channel) GBRA (planar 4:4:4:4
        ARGB, 8 bits per channel) I420_12BE, I420_12LE (planar 4:2:0
        YUV, 12 bits per channel) I422_12BE,I422_12LE (planar 4:2:2
        YUV, 12 bits per channel) Y444_12BE, Y444_12LE (planar 4:4:4
        YUV, 12 bits per channel) VYUY (another packed 4:2:2 YUV
        format)

    The high-level GstPlayer API was extended with functions for
    taking video snapshots and enabling accurate seeking. It can
    optionally also use the still-experimental playbin3 element
    now.

New Elements

    msdk: new plugin for Intel's Media SDK for hardware-accelerated
    video encoding and decoding on Intel graphics hardware on Windows
    or Linux. This includes an H.264 encoder/decoder (msdkh264dec,
    msdkh264enc), an H.265 encoder/decoder (msdkh265dec, msdkh265enc),
    an MJPEG encoder/encoder (msdkmjpegdec, msdkmjpegenc), an MPEG-2
    video encoder (msdkmpeg2enc) and a VP8 encoder (msdkvp8enc).

    iqa is a new Image Quality Assessment plugin based on DSSIM,
    similar to the old (unported) videomeasure element.

    The faceoverlay element, which allows you to overlay SVG graphics
    over a detected face in a video stream, has been ported from
    0.10.

    our ffmpeg wrapper plugin now exposes/maps the ffmpeg Opus audio
    decoder (avdec_opus) as well as the GoPro CineForm HD / CFHD
    decoder (avdec_cfhd), and also a parser/writer for the IVF
    format (avdemux_ivf and avmux_ivf).

    audiobuffersplit is a new element that splits raw audio buffers
    into equal-sized buffers

    audiomixmatrix is a new element that mixes N:M audio channels
    according to a configured mix matrix.

    The timecodewait element got renamed to avwait and can operate
    in different modes now.

    The opencv video processing plugin has gained a new dewarp
    element that dewarps fisheye images.

    ttml is a new plugin for parsing and rendering subtitles in
    Timed Text Markup Language (TTML) format. For the time being
    these elements will not be autoplugged during media playback
    however, unless the GST_TTML_AUTOPLUG=1 environment variable
    is set. Only the EBU-TT-D profile is supported at this point.

New element features and additions

    x264enc can now use multiple x264 library versions compiled for
    different bit depths at runtime, to transparently provide support
    for multiple bit depths. A new configure parameter
    --with-x264-libraries has been added to specify additional paths
    to look for additional x264 libraries to load. Background is
    that the libx264 library is always compile for one specific bit
    depth and the x264enc element would simply support the depth
    supported by the underlying library. Now we can support multiple
    depths.

    x264enc also picks up the interlacing mode automatically from
    the input caps now and passed interlacing/TFF information
    correctly to the library.

    videoscale and videoconvert now support multi-threaded scaling
    and conversion, which is particularly useful with higher
    resolution video. This has to be enabled explicitly via the
    "n-threads" property.

    videorate's new "rate" property lets you set a speed factor on
    the output stream

    splitmuxsink's buffer collection and scheduling was rewritten
    to make processing and splitting deterministic; before it was
    possible for a buffer to end up in a different file chunk in
    different runs. splitmuxsink also gained a new "format-location-full"
    signal that works just like the existing "format-location"
    signal only that it is also passed the primary stream's first
    buffer as argument, so that it is possible to construct the
    file name based on metadata such as the buffer timestamp or any
    GstMeta attached to the buffer. The new "max-size-timecode"
    property allows for timecode-based splitting. splitmuxsink will
    now also automatically start a new file if the input caps change
    in an incompatible way.

    fakesink has a new "drop-out-of-segment" property to not drop
    out-of-segment buffers, which is useful for debugging purposes.

    identity gained a "ts-offset" property.

    both fakesink and identity now also print what kind of metas
    are attached to buffers when printing buffer details via the
    "last-message" property used by gst-launch-1.0 -v.

    multiqueue: made "min-interleave-time" a configurable property.

    video nerds will be thrilled to know that videotestsrc's snow
    is now deterministic. videotestsrc also gained some new properties
    to make the ball pattern based on system time, and invert colours
    each second ("animation-mode", "motion", and "flip" properties).

    oggdemux reverse playback should work again now. You're welcome.

    playbin3 and urisourcebin now have buffering enabled by default,
    and buffering message aggregation was fixed.

    tcpclientsrc now has a "timeout" property

    appsink has gained support for buffer lists. For backwards
    compatibility reasons users need to enable this explicitly with
    gst_app_sink_set_buffer_list_support(), however. Once activated,
    a pulled GstSample can contain either a buffer list or a single
    buffer.

    splitmuxsrc reverse playback was fixed and handling of sparse
    streams, such as subtitle tracks or metadata tracks, was improved.

    matroskamux has acquired support for muxing G722 audio; it also
    marks all buffers as keyframes now when streaming only audio,
    so that tcpserversink will behave properly with audio-only
    streams.

    qtmux gained support for ProRes 4444 XQ, HEVC/H.265 and CineForm
    (GoPro) formats, and generally writes more video stream-related
    metadata into the track headers. It is also allows configuration
    of the maximum interleave size in bytes and time now. For
    fragmented mp4 we always write the tfdt atom now as required
    by the DASH spec.

    qtdemux supports FLAC, xvid, mp2, S16L and CineForm (GoPro)
    tracks now, and generally tries harder to extract more video-related
    information from track headers, such as colorimetry or interlacing
    details. It also received a couple of fixes for the scenario
    where upstream operates in TIME format and feeds chunks to
    qtdemux (e.g. DASH or MSE).

    audioecho has two new properties to apply a delay only to certain
    channels to create a surround effect, rather than an echo on
    all channels. This is useful when upmixing from stereo, for
    example. The "surround-delay" property enables this, and the
    "surround-mask" property controls which channels are considered
    surround sound channels in this case.

    webrtcdsp gained various new properties for gain control and
    also exposes voice activity detection now, in which case it
    will post "voice-activity" messages on the bus whenever the
    voice detection status changes.

    The decklink capture elements for Blackmagic Decklink cards
    have seen a number of improvements:

        decklinkvideosrc will post a warning message on "no signal"
        and an info message when the signal lock has been (re)acquired.
        There is also a new read-only "signal" property that can
        be used to query the signal lock status. The GAP flag will
        be set on buffers that are captured without a signal lock.
        The new drop-no-signal-frames will make decklinkvideosrc
        drop all buffers that have been captured without an input
        signal. The "skip-first-time" property will make the source
        drop the first few buffers, which is handy since some devices
        will at first output buffers with the wrong resolution
        before they manage to figure out the right input format and
        decide on the actual output caps.

        decklinkaudiosrc supports more than just 2 audio channels
        now.

        The capture sources no longer use the "hardware" timestamps
        which turn out to be useless and instead just use the
        pipeline clock directly.

    srtpdec now also has a readonly "stats" property, just like
    srtpenc.

    rtpbin gained RTP bundle support, as used by e.g. WebRTC. The
    first rtpsession will have a rtpssrcdemux element inside splitting
    the streams based on their SSRC and potentially dispatch to a
    different rtpsession. Because retransmission SSRCs need to be
    merged with the corresponding media stream the ::on-bundled-ssrc
    signal is emitted on rtpbin so that the application can find
    out to which session the SSRC belongs.

    rtprtxqueue gained two new properties exposing retransmission
    statistics ("requests" and "fulfilled-requests")

    kmssink will now use the preferred mode for the monitor and
    render to the base plane if nothing else has set a mode yet.
    This can also be done forcibly in any case via the new
    "force-modesetting" property. Furthermore, kmssink now allows
    only the supported connector resolutions as input caps in order
    to avoid scaling or positioning of the input stream, as kmssink
    can't know whether scaling or positioning would be more appropriate
    for the use case at hand.

    waylandsink can now take DMAbuf buffers as input in the presence
    of a compatible Wayland compositor. This enables zero-copy
    transfer from a decoder or source that outputs DMAbuf. It will
    also set surface opacity hint to allow better rendering
    optimization in the compositor.

    udpsrc can be bound to more than one interface when joining a
    multicast group, this is done by giving a comma separate list
    of interfaces such as multicast-iface="eth0,eth1".

Plugin moves

    dataurisrc moved from gst-plugins-bad to core

    The rawparse plugin containing the rawaudioparse and rawvideoparse
    elements moved from gst-plugins-bad to gst-plugins-base. These
    elements supersede the old videoparse and audioparse elements.
    They work the same, with just some minor API changes. The old
    legacy elements still exist in gst-plugins-bad, but may be
    removed at some point in the future.

    timecodestamper is an element that attaches time codes to video
    buffers in form of GstVideoTimeCodeMetas. It had a "clock-source"
    property which has now been removed because it was fairly useless
    in practice. It gained some new properties however: the
    "first-timecode" property can be used to set the inital timecode;
    alternatively "first-timecode-to-now" can be set, and then the
    current system time at the time the first buffer arrives is
    used as base time for the time codes.

Plugin removals

    The mad mp1/mp2/mp3 decoder plugin was removed from gst-plugins-ugly,
    as libmad is GPL licensed, has been unmaintained for a very
    long time, and there are better alternatives available. Use the
    mpg123audiodec element from the mpg123 plugin in gst-plugins-ugly
    instead, or avdec_mp3 from the gst-libav module which wraps the
    ffmpeg library. We expect that we will be able to move mp3
    decoding to gst-plugins-good in the next cycle seeing that most
    patents around mp3 have expired recently or are about to expire.

    The mimic plugin was removed from gst-plugins-bad. It contained
    a decoder and encoder for a video codec used by MSN messenger
    many many years ago (in a galaxy far far away). The underlying
    library is unmaintained and no one really needs to use this
    codec any more. Recorded videos can still be played back with
    the MIMIC decoder in gst-libav.

Miscellaneous API additions

    Request pad name templates passed to gst_element_request_pad()
    may now contain multiple specifiers, such as e.g. src_%u_%u.

    gst_buffer_iterate_meta_filtered() is a variant of
    gst_buffer_iterate_meta() that only returns metas of the requested
    type and skips all other metas.

    gst_pad_task_get_state() gets the current state of a task in a
    thread-safe way.

    gst_uri_get_media_fragment_table() provides the media fragments
    of an URI as a table of key=value pairs.

    gst_print(), gst_println(), gst_printerr(), and gst_printerrln()
    can be used to print to stdout or stderr. These functions are
    similar to g_print() and g_printerr() but they also support all
    the additional format specifiers provided by the GStreamer
    logging system, such as e.g. GST_PTR_FORMAT.

    a GstParamSpecArray has been added, for elements who want to
    have array type properties, such as the audiomixmatrix element
    for example. There are also two new functions to set and get
    properties of this type from bindings:
        gst_util_set_object_array() gst_util_get_object_array()

    various helper functions have been added to make it easier to
    set or get GstStructure fields containing caps-style array or
    list fields from language bindings (which usually support
    GValueArray but don't know about the GStreamer specific fundamental
    types):
        gst_structure_get_array() gst_structure_set_array()
        gst_structure_get_list() gst_structure_set_list()

    a new 'dynamic type' registry factory type was added to register
    dynamically loadable GType types. This is useful for automatically
    loading enum/flags types that are used in caps, such as for
    example the GstVideoMultiviewFlagsSet type used in multiview
    video caps.

    there is a new GstProxyControlBinding for use with GstController.
    This allows proxying the control interface from one property
    on one GstObject to another property (of the same type) in
    another GstObject. So e.g. in parent-child relationship, one
    may need to call gst_object_sync_values() on the child and have
    a binding (set elsewhere) on the parent update the value. This
    is used in glvideomixer and glsinkbin for example, where
    sync_values() on the child pad or element will call sync_values()
    on the exposed bin pad or element.

    Note that this doesn't solve GObject property forwarding, that
    must be taken care of by the implementation manually or using
    GBinding.

    gst_base_parse_drain() has been made public for subclasses to
    use.

    `gst_base_sink_set_drop_out_of_segment()' can be used by
    subclasses to prevent GstBaseSink from dropping buffers that
    fall outside of the segment.

    gst_calculate_linear_regression() is a new utility function to
    calculate a linear regression.

    gst_debug_get_stack_trace is an easy way to retrieve a stack
    trace, which can be useful in tracer plugins.

    allocators: the dmabuf allocator is now sub-classable, and there
    is a new GST_CAPS_FEATURE_MEMORY_DMABUF define.

    video decoder subclasses can use the newly-added function
    gst_video_decoder_allocate_output_frame_with_params() to pass
    a GstBufferPoolAcquireParams to the buffer pool for each buffer
    allocation.

    the video time code API has gained a dedicated GstVideoTimeCodeInterval
    type plus related API, including functions to add intervals to
    timecodes.

    There is a new libgstbadallocators-1.0 library in gst-plugins-bad,
    which may go away again in future releases once the
    GstPhysMemoryAllocator interface API has been validated by more
    users and was moved to libgstallocators-1.0 from gst-plugins-base.

GstPlayer

New API has been added to:

    get the number of audio/video/subtitle streams:
        gst_player_media_info_get_number_of_streams()
        gst_player_media_info_get_number_of_video_streams()
        gst_player_media_info_get_number_of_audio_streams()
        gst_player_media_info_get_number_of_subtitle_streams()

    enable accurate seeking: gst_player_config_set_seek_accurate()
    and gst_player_config_get_seek_accurate()

    get a snapshot image of the video in RGBx, BGRx, JPEG, PNG or
    native format: gst_player_get_video_snapshot()

    selecting use of a specific video sink element
    (gst_player_video_overlay_video_renderer_new_with_sink())

    If the environment variable GST_PLAYER_USE_PLAYBIN3 is set,
    GstPlayer will use the still-experimental playbin3 element and
    the GstStreams API for playback.

Miscellaneous changes

    video caps for interlaced video may contain an optional
    "field-order" field now in the case of interlaced-mode=interleaved
    to signal that the field order is always the same throughout
    the stream. This is useful to signal to muxers such as mp4mux.
    The new field is parsed from/to GstVideoInfo of course.

    video decoder and video encoder base classes try harder to proxy
    interlacing, colorimetry and chroma-site related fields in caps
    properly.

    The buffer stored in the PROTECTION events is now left unchanged.
    This is a change of behaviour since 1.8, especially for the
    mssdemux element which used to decode the base64 parsed data
    wrapped in the protection events emitted by the demuxer.

    PROTECTION events can now be injected into the pipeline from
    the application; source elements deriving from GstBaseSrc will
    forward those downstream now.

    The DASH demuxer is now correctly parsing the MSPR-2.0
    ContentProtection nodes and emits Protection events accordingly.
    Applications relying on those events might need to decode the
    base64 data stored in the event buffer before using it.

    The registry can now also be disabled by setting the environment
    variable GST_REGISTRY_DISABLE=yes, with similar effect as the
    GST_DISABLE_REGISTRY compile time switch.

    Seeking performance with gstreamer-vaapi based decoders was
    improved. It would recreate the decoder and surfaces on every
    seek which can be quite slow.

    more robust handling of input caps changes in videoaggregator-based
    elements such as compositor.

    Lots of adaptive streaming-related fixes across the board (DASH,
    MSS, HLS). Also:

        mssdemux, the Microsoft Smooth Streaming demuxer, has seen
        various fixes for live streams, duration reporting and
        seeking.

        The DASH manifest parser now extracts MS PlayReady
        ContentProtection objects from manifests and sends them
        downstream as PROTECTION events. It also supports multiple
        Period elements in external xml now.

    gst-libav was updated to ffmpeg 3.3 but should still work with
    any 3.x version.

    GstEncodingProfile has been generally enhanced so it can, for
    example, be used to get possible profiles for a given file
    extension. It is now possible to define profiles based on element
    factory names or using a path to a .gep file containing a
    serialized profile.

    audioconvert can now do endianness conversion in-place. All
    other conversions still require a copy, but e.g. sign conversion
    and a few others could also be implemented in-place now.

    The new, experimental playbin3 and urisourcebin elements got
    many bugfixes and improvements and should generally be closer
    to a full replacement of the old elements.

    interleave now supports > 64 channels.

    OpenCV elements, grabcut and retinex has been ported to use
    GstOpencvVideoFilter base class, increasing code reuse and
    fixing buffer map/unmap issues. Redundant copie of images has
    been removed in edgedetect, cvlaplace and cvsobel. This comes
    with various cleanup and Meson support.

OpenGL integration

    As usual the GStreamer OpenGL integration library has seen
    numerous fixes and performance improvements all over the place,
    and is hopefully ready now to become API stable and be moved
    to gst-plugins-base during the 1.14 release cycle.

    The GStreamer OpenGL integration layer has also gained support
    for the Vivante EGL FB windowing system, which improves performance
    on platforms such as Freescale iMX.6 for those who are stuck
    with the proprietary driver. The qmlglsink element also supports
    this now if Qt is used with eglfs or wayland backend, and it
    works in conjunction with gstreamer-imx of course.

    various qmlglsrc improvements

Tracing framework and debugging improvements

    New tracing hooks have been added to track GstMiniObject and
    GstObject ref/unref operations.

    The memory leaks tracer can optionally use this to retrieve
    stack traces if enabled with e.g.
    GST_TRACERS=leaks(filters="GstEvent,GstMessage",stack-traces-flags=full)

    The GST_DEBUG_FILE environment variable, which can be used to
    write the debug log output to a file instead of printing it to
    stderr, can now contain a name pattern, which is useful for
    automated testing and continuous integration systems. The
    following format specifiers are supported:
        %p: will be replaced with the PID %r: will be replaced with
        a random number, which is useful for instance when running
        two processes with the same PID but in different containers.

Tools

    gst-inspect-1.0 can now list elements by type with the new
    --types command-line option, e.g. gst-inspect-1.0 --types=Audio/Encoder
    will show a list of audio encoders.

    gst-launch-1.0 and gst_parse_launch() have gained a new operator
    (:) that allows linking all pads between two elements. This is
    useful in cases where the exact number of pads or type of pads
    is not known beforehand, such as in the uridecodebin : encodebin
    scenario, for example. In this case, multiple links will be
    created if the encodebin has multiple profiles compatible with
    the output of uridecodebin.

    gst-device-monitor-1.0 now shows a gst-launch-1.0 snippet for
    each device that shows how to make use of it in a gst-launch-1.0
    pipeline string.

GStreamer RTSP server

    The RTSP server now also supports Digest authentication in
    addition to Basic authentication.

    The GstRTSPClient class has gained a pre-*-request signal and
    virtual method for each client request type, emitted in the
    beginning of each rtsp request. These signals or virtual methods
    let the application validate the requests, configure the
    media/stream in a certain way and also generate error status
    codes in case of an error or a bad request.

GStreamer VAAPI

    GstVaapiDisplay now inherits from GstObject, thus the VA display
    logging messages are better and tracing the context sharing is
    more readable.

    When uploading raw images into a VA surfaces now VADeriveImages
    are tried fist, improving the upload performance, if it is
    possible.

    The decoders and the post-processor now can push dmabuf-based
    buffers to downstream under certain conditions. For example:

    GST_GL_PLATFORM=egl gst-play-1.0 video-sample.mkv
    --videosink=glimagesink

    Refactored the wrapping of VA surface into gstreamer memory,
    adding lock when mapping and unmapping, and many other fixes.

    Now vaapidecodebin loads vaapipostproc dynamically. It is
    possible to avoid it usage with the environment variable
    GST_VAAPI_DISABLE_VPP=1.

    Regarding encoders: they have primary rank again, since they
    can discover, in run-time, the color formats they can use for
    upstream raw buffers and caps renegotiation is now possible.
    Also the encoders push encoding info downstream via tags.

    About specific encoders: added constant bit-rate encoding mode
    for VP8 and H265 encoder handles P010_10LE color format.

    Regarding decoders, flush operation has been improved, now the
    internal VA encoder is not recreated at each flush. Also there
    are several improvements in the handling of H264 and H265
    streams.

    VAAPI plugins try to create their on GstGL context (when
    available) if they cannot find it in the pipeline, to figure
    out what type of VA Display they should create.

    Regarding vaapisink for X11, if the backend reports that it is
    unable to render correctly the current color format, an internal
    VA post-processor, is instantiated (if available) and converts
    the color format.

GStreamer Editing Services and NLE

    Enhanced auto transition behaviour

    Fix some races in nlecomposition

    Allow building with msvc

    Added a UNIX manpage for ges-launch

    API changes:
        Added ges_deinit (allowing the leak tracer to work properly)
        Added ges_layer_get_clips_in_interval Finally hide internal
        symbols that should never have been exposed

GStreamer validate

    Port gst-validate-launcher to python 3

    gst-validate-launcher now checks if blacklisted bugs have been
    fixed on bugzilla and errors out if it is the case

    Allow building with msvc

    Add ability for the launcher to run GStreamer unit tests

    Added a way to activate the leaks tracer on our tests and fix
    leaks

    Make the http server multithreaded

    New testsuite for running various test scenarios on the DASH-IF
    test vectors

GStreamer Python Bindings

    Overrides has been added for IntRange, Int64Range, DoubleRange,
    FractionRange, Array and List. This finally enables Python
    programmers to fully read and write GstCaps objects.

Build and Dependencies

    Meson build files are now disted in tarballs, for jhbuild and
    so distro packagers can start using it. Note that the Meson-based
    build system is not 100% feature-equivalent with the autotools-based
    one yet.

    Some plugin filenames have been changed to match the plugin
    names: for example the file name of the encoding plugin in
    gst-plugins-base containing the encodebin element was
    libgstencodebin.so and has been changed to libgstencoding.so.
    This affects only a handful of plugins across modules.

    Developers who install GStreamer from source and just do make
    install after updating the source code, without doing make
    uninstall first, will have to manually remove the old installed
    plugin files from the installation prefix, or they will get
    'Cannot register existing type' critical warnings.

    Most of the docbook-based documentation (FAQ, Application
    Development Manual, Plugin Writer's Guide, design documents)
    has been converted to markdown and moved into a new gst-docs
    module. The gtk-doc library API references and the plugins
    documentation are still built as part of the source modules
    though.

    GStreamer core now optionally uses libunwind and libdw to
    generate backtraces. This is useful for tracer plugins used
    during debugging and development.

    There is a new libgstbadallocators-1.0 library in gst-plugins-bad
    (which may go away again in future releases once the
    GstPhysMemoryAllocator interface API has been validated by more
    users).

    gst-omx and gstreamer-vaapi modules can now also be built using
    the Meson build system.

    The qtkitvideosrc element for macOS was removed. The API is
    deprecated since 10.9 and it wasn't shipped in the binaries
    since a few releases.

Platform-specific improvements Android

    androidmedia: add support for VP9 video decoding/encoding and
    Opus audio decoding (where supported)

OS/X and iOS

    avfvideosrc, which represents an iPhone camera or, on a Mac, a
    screencapture session, so far allowed you to select an input
    device by device index only. New API adds the ability to select
    the position (front or back facing) and device-type (wide angle,
    telephoto, etc.). Furthermore, you can now also specify the
    orientation (portrait, landscape, etc.) of the videostream.

Bugs fixed in 1.12

More than 635 bugs have been fixed during the development of 1.12.

This list does not include issues that have been cherry-picked into
the stable 1.10 branch and fixed there as well, all fixes that ended
up in the 1.10 branch are also included in 1.12.

This list also does not include issues that have been fixed without
a bug report in bugzilla, so the actual number of fixes is much
higher.  Stable 1.12 branch

After the 1.12.0 release there will be several 1.12.x bug-fix
releases which will contain bug fixes which have been deemed suitable
for a stable branch, but no new features or intrusive changes will
be added to a bug-fix release usually. The 1.12.x bug-fix releases
will be made from the git 1.12 branch, which is a stable branch.

1.12.0

1.12.0 was released on 4th May 2017.

1.12.1

The first 1.12 bug-fix release (1.12.1) was released on 20 June
2017. This release only contains bugfixes and it should be safe to
update from 1.12.x.  Major bugfixes in 1.12.1

    Various fixes for crashes, assertions, deadlocks and memory
    leaks Fix for regression when seeking to the end of ASF files
    Fix for regression in (raw)videoparse that caused it to omit
    video metadata Fix for regression in discoverer that made it
    show more streams than actually available Numerous bugfixes to
    the adaptive demuxer base class and the DASH demuxer Various
    playbin3/urisourcebin related bugfixes Vivante DirectVIV (imx6)
    texture uploader works with single-plane (e.g. RGB) video formats
    now Intel Media SDK encoder now outputs valid PTS and keyframe
    flags OpenJPEG2000 plugin can be loaded again on MacOS and
    correctly displays 8 bit RGB images now Fixes to DirectSound
    source/sink for high CPU usage and wrong latency/buffer size
    calculations gst-libav was updated to ffmpeg n3.3.2 ... and
    many, many more!

1.12.2

The second 1.12 bug-fix release (1.12.2) was released on 14 July
2017. This release only contains bugfixes and it should be safe to
update from 1.12.x.  Major bugfixes in 1.12.2

    Various fixes for crashes, assertions, deadlocks and memory
    leaks Regression fix for playback of live HLS streams Regression
    fix for crash when playing back a tunneled RTSP stream Regression
    fix for playback of RLE animations in MOV containers Regression
    fix for RTP GSM payloading producing corrupted output Major
    bugfixes to the MXF demuxer, mostly related to seeking and fixes
    to the frame reordering handling in the MXF muxer and demuxer
    Fix for playback of mono streams on MacOS More fixes for index
    handling of ASF containers Various fixes to adaptivedemux, DASH
    and HLS demuxers Fix deadlock in gstreamer-editing-services
    during class initialization ... and many, many more!

Revision 1.8 / (download) - annotate - [select for diffs], Thu Dec 1 12:33:55 2016 UTC (3 years, 3 months ago) by martin
Branch: MAIN
CVS Tags: pkgsrc-2017Q2-base, pkgsrc-2017Q2, pkgsrc-2017Q1-base, pkgsrc-2017Q1, pkgsrc-2016Q4-base, pkgsrc-2016Q4
Changes since 1.7: +21 -21 lines
Diff to previous 1.7 (colored)

Make introspection optional

Revision 1.7 / (download) - annotate - [select for diffs], Wed Nov 16 12:08:25 2016 UTC (3 years, 4 months ago) by wiz
Branch: MAIN
Changes since 1.6: +8 -0 lines
Diff to previous 1.6 (colored)

Update gstreamer1 packages to 1.10.0.

# GStreamer 1.10 Release Notes

**GStreamer 1.10.0 was released on 1st November 2016.**

The GStreamer team is proud to announce a new major feature release in the
stable 1.x API series of your favourite cross-platform multimedia framework!

As always, this release is again packed with new features, bug fixes and other
improvements.

See [https://gstreamer.freedesktop.org/releases/1.10/][latest] for the latest
version of this document.

*Last updated: Tuesday 1 Nov 2016, 15:00 UTC [(log)][gitlog]*

[latest]: https://gstreamer.freedesktop.org/releases/1.10/
[gitlog]: https://cgit.freedesktop.org/gstreamer/www/log/src/htdocs/releases/1.10/release-notes-1.10.md

## Introduction

The GStreamer team is proud to announce a new major feature release in the
stable 1.x API series of your favourite cross-platform multimedia framework!

As always, this release is again packed with new features, bug fixes and other
improvements.

## Highlights

- Several convenience APIs have been added to make developers' lives easier
- A new `GstStream` API provides applications a more meaningful view of the
  structure of streams, simplifying the process of dealing with media in
  complex container formats
- Experimental `decodebin3` and `playbin3` elements which bring a number of
  improvements which were hard to implement within `decodebin` and `playbin`
- A new `parsebin` element to automatically unpack and parse a stream, stopping
  just short of decoding
- Experimental new `meson`-based build system, bringing faster build and much
  better Windows support (including for building with Visual Studio)
- A new `gst-docs` module has been created, and we are in the process of moving
  our documentation to a markdown-based format for easier maintenance and
  updates
- A new `gst-examples` module has been create, which contains example
  GStreamer applications and is expected to grow with many more examples in
  the future
- Various OpenGL and OpenGL|ES-related fixes and improvements for greater
  efficiency on desktop and mobile platforms, and Vulkan support on Wayland was
  also added
- Extensive improvements to the VAAPI plugins for improved robustness and
  efficiency
- Lots of fixes and improvements across the board, spanning RTP/RTSP, V4L2,
  Bluetooth, audio conversion, echo cancellation, and more!

## Major new features and changes

### Noteworthy new API, features and other changes

#### Core API additions

##### Receive property change notifications via bus messages

New API was added to receive element property change notifications via
bus messages. So far, applications had to connect a callback to an element's
`notify::property-name` signal via the GObject API, which was inconvenient for
at least two reasons: one had to implement a signal callback function, and that
callback function would usually be called from one of the streaming threads, so
one had to marshal (send) any information gathered or pending requests to the
main application thread which was tedious and error-prone.

Enter [`gst_element_add_property_notify_watch()`][notify-watch] and
[`gst_element_add_property_deep_notify_watch()`][deep-notify-watch] which will
watch for changes of a property on the specified element, either only for this
element or recursively for a whole bin or pipeline. Whenever such a
property change happens, a `GST_MESSAGE_PROPERTY_NOTIFY` message will be posted
on the pipeline bus with details of the element, the property and the new
property value, all of which can be retrieved later from the message in the
application via [`gst_message_parse_property_notify()`][parse-notify]. Unlike
the GstBus watch functions, this API does not rely on a running GLib main loop.

The above can be used to be notified asynchronously of caps changes in the
pipeline, or volume changes on an audio sink element, for example.

[notify-watch]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html#gst-element-add-property-notify-watch
[deep-notify-watch]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html#gst-element-add-property-deep-notify-watch
[parse-notify]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstMessage.html#gst-message-parse-property-notify

##### GstBin "deep" element-added and element-removed signals

GstBin has gained `"deep-element-added"` and `"deep-element-removed"` signals
which makes it easier for applications and higher-level plugins to track when
elements are added or removed from a complex pipeline with multiple sub-bins.

`playbin` makes use of this to implement the new `"element-setup"` signal which
can be used to configure elements as they are added to `playbin`, just like the
existing `"source-setup"` signal which can be used to configure the source
element created.

##### Error messages can contain additional structured details

It is often useful to provide additional, structured information in error,
warning or info messages for applications (or higher-level elements) to make
intelligent decisions based on them. To allow this, error, warning and info
messages now have API for adding arbitrary additional information to them
using a `GstStructure`:
[`GST_ELEMENT_ERROR_WITH_DETAILS`][element-error-with-details] and
corresponding API for the other message types.

This is now used e.g. by the new [`GST_ELEMENT_FLOW_ERROR`][element-flow-error]
API to include the actual flow error in the error message, and the
[souphttpsrc element][souphttpsrc-detailed-errors] to provide the HTTP
status code, and the URL (if any) to which a redirection has happened.

[element-error-with-details]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html#GST-ELEMENT-ERROR-WITH-DETAILS:CAPS
[element-flow-error]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html#GST-ELEMENT-FLOW-ERROR:CAPS
[souphttpsrc-detailed-errors]: https://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/ext/soup/gstsouphttpsrc.c?id=60d30db912a1aedd743e66b9dcd2e21d71fbb24f#n1318

##### Redirect messages have official API now

Sometimes, elements need to redirect the current stream URL and tell the
application to proceed with this new URL, possibly using a different
protocol too (thus changing the pipeline configuration). Until now, this was
informally implemented using `ELEMENT` messages on the bus.

Now this has been formalized in the form of a new `GST_MESSAGE_REDIRECT` message.
A new redirect message can be created using [`gst_message_new_redirect()`][new-redirect].
If needed, multiple redirect locations can be specified by calling
[`gst_message_add_redirect_entry()`][add-redirect] to add further redirect
entries, all with metadata, so the application can decide which is
most suitable (e.g. depending on the bitrate tags).

[new-redirect]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstMessage.html#gst-message-new-redirect
[add-redirect]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstMessage.html#gst-message-add-redirect-entry

##### New pad linking convenience functions that automatically create ghost pads

New pad linking convenience functions were added:
[`gst_pad_link_maybe_ghosting()`][pad-maybe-ghost] and
[`gst_pad_link_maybe_ghosting_full()`][pad-maybe-ghost-full] which were
previously internal to GStreamer have now been exposed for general use.

The existing pad link functions will refuse to link pads or elements at
different levels in the pipeline hierarchy, requiring the developer to
create ghost pads where necessary. These new utility functions will
automatically create ghostpads as needed when linking pads at different
levels of the hierarchy (e.g. from an element inside a bin to one that's at
the same level in the hierarchy as the bin, or in another bin).

[pad-maybe-ghost]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-link-maybe-ghosting
[pad-maybe-ghost-full]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-link-maybe-ghosting-full

##### Miscellaneous

Pad probes: IDLE and BLOCK probes now work slightly differently in pull mode,
so that push and pull mode have opposite scenarios for idle and blocking probes.
In push mode, it will block with some data type and IDLE won't have any data.
In pull mode, it will block _before_ getting a buffer and will be IDLE once some
data has been obtained. ([commit][commit-pad-probes], [bug][bug-pad-probes])

[commit-pad-probes]: https://cgit.freedesktop.org/gstreamer/gstreamer/commit/gst/gstpad.c?id=368ee8a336d0c868d81fdace54b24431a8b48cbf
[bug-pad-probes]: https://bugzilla.gnome.org/show_bug.cgi?id=761211

[`gst_parse_launch_full()`][parse-launch-full] can now be made to return a
`GstBin` instead of a top-level pipeline by passing the new
`GST_PARSE_FLAG_PLACE_IN_BIN` flag.

[parse-launch-full]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstParse.html#gst-parse-launch-full

The default GStreamer debug log handler can now be removed before
calling `gst_init()`, so that it will never get installed and won't be active
during initialization.

A new [`STREAM_GROUP_DONE` event][stream-group-done-event] was added. In some
ways it works similar to the `EOS` event in that it can be used to unblock
downstream elements which may be waiting for further data, such as for example
`input-selector`. Unlike `EOS`, further data flow may happen after the
`STREAM_GROUP_DONE` event though (and without the need to flush the pipeline).
This is used to unblock input-selector when switching between streams in
adaptive streaming scenarios (e.g. HLS).

[stream-group-done-event]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstEvent.html#gst-event-new-stream-group-done

The `gst-launch-1.0` command line tool will now print unescaped caps in verbose
mode (enabled by the -v switch).

[`gst_element_call_async()`][call-async] has been added as convenience API for
plugin developers. It is useful for one-shot operations that need to be done
from a thread other than the current streaming thread. It is backed by a
thread-pool that is shared by all elements.

[call-async]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html#gst-element-call-async

Various race conditions have been fixed around the `GstPoll` API used by e.g.
`GstBus` and `GstBufferPool`. Some of these manifested themselves primarily
on Windows.

`GstAdapter` can now keep track of discontinuities signalled via the `DISCONT`
buffer flag, and has gained [new API][new-adapter-api] to track PTS, DTS and
offset at the last discont. This is useful for plugins implementing advanced
trick mode scenarios.

[new-adapter-api]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstAdapter.html#gst-adapter-pts-at-discont

`GstTestClock` gained a new [`"clock-type"` property][clock-type-prop].

[clock-type-prop]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstTestClock.html#GstTestClock--clock-type

#### GstStream API for stream announcement and stream selection

New stream listing and stream selection API: new API has been added to
provide high-level abstractions for streams ([`GstStream`][stream-api])
and collections of streams ([`GstStreamCollections`][stream-collection-api]).

##### Stream listing

A [`GstStream`][stream-api] contains all the information pertinent to a stream,
such as stream id, caps, tags, flags and stream type(s); it can represent a
single elementary stream (e.g. audio, video, subtitles, etc.) or a container
stream. This will depend on the context. In a decodebin3/playbin3 one
it will typically be elementary streams that can be selected and unselected.

A [`GstStreamCollection`][stream-collection-api] represents a group of streams
and is used to announce or publish all available streams. A GstStreamCollection
is immutable - once created it won't change. If the available streams change,
e.g. because a new stream appeared or some streams disappeared, a new stream
collection will be published. This new stream collection may contain streams
from the previous collection if those streams persist, or completely new ones.
Stream collections do not yet list all theoretically available streams,
e.g. other available DVD angles or alternative resolutions/bitrate of the same
stream in case of adaptive streaming.

New events and messages have been added to notify or update other elements and
the application about which streams are currently available and/or selected.
This way, we can easily and seamlessly let the application know whenever the
available streams change, as happens frequently with digital television streams
for example. The new system is also more flexible. For example, it is now also
possible for the application to select multiple streams of the same type
(e.g. in a transcoding/transmuxing scenario).

A [`STREAM_COLLECTION` message][stream-collection-msg] is posted on the bus
to inform the parent bin (e.g. `playbin3`, `decodebin3`) and/or the application
about what streams are available, so you no longer have to hunt for this
information at different places. The available information includes number of
streams of each type, caps, tags etc.  Bins and/or the application can intercept
the message synchronously to select and deselect streams before any data is
produced - for the case where elements such as the demuxers support the new
stream API, not necessarily in the parsebin compatibility fallback case.

Similarly, there is also a [`STREAM_COLLECTION` event][stream-collection-event]
to inform downstream elements of the available streams. This event can be used
by elements to aggregate streams from multiple inputs into one single collection.

The `STREAM_START` event was extended so that it can also contain a GstStream
object with all information about the current stream, see
[`gst_event_set_stream()`][event-set-stream] and
[`gst_event_parse_stream()`][event-parse-stream].
[`gst_pad_get_stream()`][pad-get-stream] is a new utility function that can be
used to look up the GstStream from the `STREAM_START` sticky event on a pad.

[stream-api]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstStream.html
[stream-collection-api]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstStreamCollection.html
[stream-collection-msg]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstMessage.html#gst-message-new-stream-collection
[stream-collection-event]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstEvent.html#gst-event-new-stream-collection
[event-set-stream]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstEvent.html#gst-event-set-stream
[event-parse-stream]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstEvent.html#gst-event-parse-stream
[pad-get-stream]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-get-stream

##### Stream selection

Once the available streams have been published, streams can be selected via
their stream ID using the new `SELECT_STREAMS` event, which can be created
with [`gst_event_new_select_streams()`][event-select-streams]. The new API
supports selecting multiple streams per stream type. In the future, we may also
implement explicit deselection of streams that will never be used, so
elements can skip these and never expose them or output data for them in the
first place.

The application is then notified of the currently selected streams via the
new `STREAMS_SELECTED` message on the pipeline bus, containing both the current
stream collection as well as the selected streams. This might be posted in
response to the application sending a `SELECT_STREAMS` event or when
`decodebin3` or `playbin3` decide on the streams to be initially selected without
application input.

[event-select-streams]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstEvent.html#gst-event-new-select-streams

##### Further reading

See further below for some notes on the new elements supporting this new
stream API, namely: `decodebin3`, `playbin3` and `parsebin`.

More information about the new API and the new elements can also be found here:

- GStreamer [stream selection design docs][streams-design]
- Edward Hervey's talk ["The new streams API: Design and usage"][streams-talk] ([slides][streams-slides])
- Edward Hervey's talk ["Decodebin3: Dealing with modern playback use cases"][db3-talk] ([slides][db3-slides])

[streams-design]: https://cgit.freedesktop.org/gstreamer/gstreamer/tree/docs/design/part-stream-selection.txt
[streams-talk]: https://gstconf.ubicast.tv/videos/the-new-gststream-api-design-and-usage/
[streams-slides]: https://gstreamer.freedesktop.org/data/events/gstreamer-conference/2016/Edward%20Hervey%20-%20The%20New%20Streams%20API%20Design%20and%20Usage.pdf
[db3-talk]: https://gstconf.ubicast.tv/videos/decodebin3-or-dealing-with-modern-playback-use-cases/
[db3-slides]: https://gstreamer.freedesktop.org/data/events/gstreamer-conference/2015/Edward%20Hervey%20-%20decodebin3.pdf

#### Audio conversion and resampling API

The audio conversion library received a completely new and rewritten audio
resampler, complementing the audio conversion routines moved into the audio
library in the [previous release][release-notes-1.8]. Integrating the resampler
with the other audio conversion library allows us to implement generic
conversion much more efficiently, as format conversion and resampling can now
be done in the same processing loop instead of having to do it in separate
steps (our element implementations do not make use of this yet though).

The new audio resampler library is a combination of some of the best features
of other samplers such as ffmpeg, speex and SRC. It natively supports S16, S32,
F32 and F64 formats and uses optimized x86 and neon assembly for most of its
processing. It also has support for dynamically changing sample rates by incrementally
updating the filter tables using linear or cubic interpolation. According to
some benchmarks, it's one of the fastest and most accurate resamplers around.

The `audioresample` plugin has been ported to the new audio library functions
to make use of the new resampler.

[release-notes-1.8]: https://gstreamer.freedesktop.org/releases/1.8/

#### Support for SMPTE timecodes

Support for SMPTE timecodes was added to the GStreamer video library. This
comes with an abstraction for timecodes, [`GstVideoTimeCode`][video-timecode]
and a [`GstMeta`][video-timecode-meta] that can be placed on video buffers for
carrying the timecode information for each frame. Additionally there is
various API for making handling of timecodes easy and to do various
calculations with them.

A new plugin called [`timecode`][timecode-plugin] was added, that contains an
element called `timecodestamper` for putting the timecode meta on video frames
based on counting the frames and another element called `timecodewait` that
drops all video (and audio) until a specific timecode is reached.

Additionally support was added to the Decklink plugin for including the
timecode information when sending video out or capturing it via SDI, the
`qtmux` element is able to write timecode information into the MOV container,
and the `timeoverlay` element can overlay timecodes on top of the video.

More information can be found in the [talk about timecodes][timecode-talk] at
the GStreamer Conference 2016.

[video-timecode]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideo.html#GstVideoTimeCode
[video-timecode-meta]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideometa.html#gst-buffer-add-video-time-code-meta
[timecode-plugin]: https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/gst/timecode
[timecode-talk]: https://gstconf.ubicast.tv/videos/smpte-timecodes-in-gstreamer/

#### GStreamer OpenMAX IL plugin

The last gst-omx release, 1.2.0, was in July 2014. It was about time to get
a new one out with all the improvements that have happened in the meantime.
From now on, we will try to release gst-omx together with all other modules.

This release features a lot of bugfixes, improved support for the Raspberry Pi
and in general improved support for zerocopy rendering via EGL and a few minor
new features.

At this point, gst-omx is known to work best on the Raspberry Pi platform but
it is also known to work on various other platforms. Unfortunately, we are
not including configurations for any other platforms, so if you happen to use
gst-omx: please send us patches with your configuration and code changes!

### New Elements

#### decodebin3, playbin3, parsebin (experimental)

This release features new decoding and playback elements as experimental
technology previews: `decodebin3` and `playbin3` will soon supersede the
existing `decodebin` and `playbin` elements. We skipped the number 2 because
it was already used back in the 0.10 days, which might cause confusion.
Experimental technology preview means that everything should work fine already,
but we can't guarantee there won't be minor behavioural changes in the
next cycle. In any case, please test and report any problems back.

Before we go into detail about what these new elements improve, let's look at
the new [`parsebin`][parsebin] element. It works similarly to `decodebin` and
`decodebin3`, only that it stops one step short and does not plug any actual
decoder elements. It will only plug parsers, tag readers, demuxers and
depayloaders. Also note that parsebin does not contain any queueing element.

[`decodebin3`'s][decodebin3] internal architecture is slightly different from
the existing `decodebin` element and fixes many long-standing issues with our
decoding engine. For one, data is now fed into the internal `multiqueue` element
*after* it has been parsed and timestamped, which means that the `multiqueue`
element now has more knowledge and is able to calculate the interleaving of the
various streams, thus minimizing memory requirements and doing away with magic
values for buffering limits that were conceived when videos were 240p or 360p.
Anyone who has tried to play back 4k video streams with decodebin2
will have noticed the limitations of that approach. The improved timestamp
tracking also enables `multiqueue` to keep streams of the same type (audio,
video) aligned better, making sure switching between streams of the same type
is very fast.

Another major improvement in `decodebin3` is that it will no longer decode
streams that are not being used. With the old `decodebin` and `playbin`, when
there were 8 audio streams we would always decode all 8 streams even
if 7 were not actually used. This caused a lot of CPU overhead, which was
particularly problematic on embedded devices. When switching between streams
`decodebin3` will try hard to re-use existing decoders. This is useful when
switching between multiple streams of the same type if they are encoded in the
same format.

Re-using decoders is also useful when the available streams change on the fly,
as might happen with radio streams (chained Oggs), digital television
broadcasts, when adaptive streaming streams change bitrate, or when switching
gaplessly to the next title. In order to guarantee a seamless transition, the
old `decodebin2` would plug a second decoder for the new stream while finishing
up the old stream. With `decodebin3`, this is no longer needed - at least not
when the new and old format are the same. This will be particularly useful
on embedded systems where it is often not possible to run multiple decoders
at the same time, or when tearing down and setting up decoders is fairly
expensive.

`decodebin3` also allows for multiple input streams, not just a single one.
This will be useful, in the future, for gapless playback, or for feeding
multiple external subtitle streams to decodebin/playbin.

`playbin3` uses `decodebin3` internally, and will supercede `playbin`.
It was decided that it would be too risky to make the old `playbin` use the
new `decodebin3` in a backwards-compatible way. The new architecture
makes it awkward, if not impossible, to maintain perfect backwards compatibility
in some aspects, hence `playbin3` was born, and developers can migrate to the
new element and new API at their own pace.

All of these new elements make use of the new `GstStream` API for listing and
selecting streams, as described above. `parsebin` provides backwards
compatibility for demuxers and parsers which do not advertise their streams
using the new API yet (which is most).

The new elements are not entirely feature-complete yet: `playbin3` does not
support so-called decodersinks yet where the data is not decoded inside
GStreamer but passed directly for decoding to the sink. `decodebin3` is missing
the various `autoplug-*` signals to influence which decoders get autoplugged
in which order. We're looking to add back this functionality, but it will probably
be in a different way, with a single unified signal and using GstStream perhaps.

For more information on these new elements, check out Edward Hervey's talk
[*decodebin3 - dealing with modern playback use cases*][db3-talk]

[parsebin]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-parsebin.html
[decodebin3]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-decodebin3.html
[db3-talk]: https://gstconf.ubicast.tv/videos/decodebin3-or-dealing-with-modern-playback-use-cases/

#### LV2 ported from 0.10 and switched from slv2 to lilv2

The LV2 wrapper plugin has been ported to 1.0 and moved from using the
deprecated slv2 library to its replacement liblv2. We support sources and
filter elements. lv2 is short for *Linux Audio Developer's Simple Plugin API
(LADSPA) version 2* and is an open standard for audio plugins which includes
support for audio synthesis (generation), digital signal processing of digital
audio, and MIDI. The new lv2 plugin supersedes the existing LADSPA plugin.

#### WebRTC DSP Plugin for echo-cancellation, gain control and noise suppression

A set of new elements ([webrtcdsp][webrtcdsp], [webrtcechoprobe][webrtcechoprobe])
based on the WebRTC DSP software stack can now be used to improve your audio
voice communication pipelines. They support echo cancellation, gain control,
noise suppression and more. For more details you may read
[Nicolas' blog post][webrtc-blog-post].

[webrtcdsp]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-webrtcdsp.html
[webrtcechoprobe]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-webrtcechoprobe.html
[webrtc-blog-post]: https://ndufresne.ca/2016/06/gstreamer-echo-canceller/

#### Fraunhofer FDK AAC encoder and decoder

New encoder and decoder elements wrapping the Fraunhofer FDK AAC library have
been added (`fdkaacdec`, `fdkaacdec`). The Fraunhofer FDK AAC encoder is
generally considered to be a very high-quality AAC encoder, but unfortunately
it comes under a non-free license with the option to obtain a paid, commercial
license.

### Noteworthy element features and additions

#### Major RTP and RTSP improvements

- The RTSP server and source element, as well as the RTP jitterbuffer now support
  remote clock synchronization according to [RFC7273][https://tools.ietf.org/html/rfc7273].
- Support for application and profile specific RTCP packets was added.
- The H265/HEVC payloader/depayloader is again in sync with the final RFC.
- Seeking stability of the RTSP source and server was improved a lot and
  runs stably now, even when doing scrub-seeking.
- The RTSP server received various major bugfixes, including for regressions that
  caused the IP/port address pool to not be considered, or NAT hole punching
  to not work anymore. [Bugzilla #766612][https://bugzilla.gnome.org/show_bug.cgi?id=766612]
- Various other bugfixes that improve the stability of RTP and RTSP, including
  many new unit / integration tests.

#### Improvements to splitmuxsrc and splitmuxsink

- The splitmux element received reliability and error handling improvements,
  removing at least one deadlock case. `splitmuxsrc` now stops cleanly at the end
  of the segment when handling seeks with a stop time. We fixed a bug with large
  amounts of downstream buffering causing incorrect out-of-sequence playback.

- `splitmuxsrc` now has a `"format-location"` signal to directly specify the list
  of files to play from.

- `splitmuxsink` can now optionally send force-keyunit events to upstream
  elements to allow splitting files more accurately instead of having to wait
  for upstream to provide a new keyframe by itself.

#### OpenGL/GLES improvements

##### iOS and macOS (OS/X)

- We now create OpenGL|ES 3.x contexts on iOS by default with a fallback to
  OpenGL|ES 2.x if that fails.
- Various zerocopy decoding fixes and enhancements with the
  encoding/decoding/capturing elements.
- libdispatch is now used on all Apple platforms instead of GMainLoop, removing
  the expensive poll()/pthread_*() overhead.

##### New API

- `GstGLFramebuffer` - for wrapping OpenGL frame buffer objects.  It provides
  facilities for attaching `GstGLMemory` objects to the necessary attachment
  points, binding and unbinding and running a user-supplied function with the
  framebuffer bound.
- `GstGLRenderbuffer` (a `GstGLBaseMemory` subclass) - for wrapping OpenGL
  render buffer objects that are typically used for depth/stencil buffers or
  for color buffers where we don't care about the output.
- `GstGLMemoryEGL` (a `GstGLMemory` subclass) - for combining `EGLImage`s with a GL
  texture that replaces `GstEGLImageMemory` bringing the improvements made to the
  other `GstGLMemory` implementations.  This fixes a performance regression in
  zerocopy decoding on the Raspberry Pi when used with an updated gst-omx.

##### Miscellaneous improvements

- `gltestsrc` is now usable on devices/platforms with OpenGL 3.x and OpenGL|ES
  and has completed or gained support for new patterns in line with the
  existing ones in `videotestsrc`.
- `gldeinterlace` is now available on devices/platforms with OpenGL|ES
  implementations.
- The dispmanx backend (used on the Raspberry Pi) now supports the
  `gst_video_overlay_set_window_handle()` and
  `gst_video_overlay_set_render_rectangle()` functions.
- The `gltransformation` element now correctly transforms mouse coordinates (in
  window space) to stream coordinates for both perspective and orthographic
  projections.
- The `gltransformation` element now detects if the
  `GstVideoAffineTransformationMeta` is supported downstream and will efficiently
  pass its transformation downstream. This is a performance improvement as it
  results in less processing being required.
- The wayland implementation now uses the multi-threaded safe event-loop API
  allowing correct usage in applications that call wayland functions from
  multiple threads.
- Support for native 90 degree rotations and horizontal/vertical flips
  in `glimagesink`.

#### Vulkan

- The Vulkan elements now work under Wayland and have received numerous
  bugfixes.

#### QML elements

- `qmlglsink` video sink now works on more platforms, notably, Windows, Wayland,
  and Qt's eglfs (for embedded devices with an OpenGL implementation) including
  the Raspberry Pi.
- New element `qmlglsrc` to record a QML scene into a GStreamer pipeline.

#### KMS video sink

- New element `kmssink` to render video using Direct Rendering Manager
  (DRM) and Kernel Mode Setting (KMS) subsystems in the Linux
  kernel. It is oriented to be used mostly in embedded systems.

#### Wayland video sink

- `waylandsink` now supports the wl_viewporter extension allowing
  video scaling and cropping to be delegated to the Wayland
  compositor. This extension is also been made optional, so that it can
  also work on current compositors that don't support it. It also now has
  support for the video meta, allowing zero-copy operations in more
  cases.

#### DVB improvements

- `dvbsrc` now has better delivery-system autodetection and several
  new parameter sanity-checks to improve its resilience to configuration
  omissions and errors. Superfluous polling continues to be trimmed down,
  and the debugging output has been made more consistent and precise.
  Additionally, the channel-configuration parser now supports the new dvbv5
  format, enabling `dvbbasebin` to automatically playback content transmitted
  on delivery systems that previously required manual description, like ISDB-T.

#### DASH, HLS and adaptivedemux

- HLS now has support for Alternate Rendition audio and video tracks. Full
  support for Alternate Rendition subtitle tracks will be in an upcoming release.
- DASH received support for keyframe-only trick modes if the
  `GST_SEEK_FLAG_TRICKMODE_KEY_UNITS` flag is given when seeking. It will
  only download keyframes then, which should help with high-speed playback.
  Changes to skip over multiple frames based on bandwidth and other metrics
  will be added in the near future.
- Lots of reliability fixes around seek handling and bitrate switching.

#### Bluetooth improvements

- The `avdtpsrc` element now supports metadata such as track title, artist
  name, and more, which devices can send via AVRCP. These are published as
  tags on the pipeline.
- The `a2dpsink` element received some love and was cleaned up so that it
  actually works after the initial GStreamer 1.0 port.

#### GStreamer VAAPI

- All the decoders have been split, one plugin feature per codec. So
  far, the available ones, depending on the driver, are:
  `vaapimpeg2dec`, `vaapih264dec`, `vaapih265dec`, `vaapivc1dec`, `vaapivp8dec`,
  `vaapivp9dec` and `vaapijpegdec` (which already was split).
- Improvements when mapping VA surfaces into memory. It now differentiates
  between negotiation caps and allocations caps, since the allocation
  memory for surfaces may be bigger than one that is going to be
  mapped.
- `vaapih265enc` now supports constant bitrate mode (CBR).
- Since several VA drivers are unmaintained, we decide to keep a whitelist
  with the va drivers we actually test, which is mostly the i915 and to a lesser
  degree gallium from the mesa project. Exporting the environment variable
  `GST_VAAPI_ALL_DRIVERS` disables the whitelist.
- Plugin features are registered at run-time, according to their support by
  the loaded VA driver. So only the decoders and encoder supported by the
  system are registered. Since the driver can change, some dependencies are
  tracked to invalidate the GStreamer registry and reload the plugin.
- `dmabuf` importation from upstream has been improved, gaining performance.
- `vaapipostproc` now can negotiate buffer transformations via caps.
- Decoders now can do I-frame only reverse playback. This decodes I-frames
  only because the surface pool is smaller than the required by the GOP to show all the
  frames.
- The upload of frames onto native GL textures has been optimized too, keeping
  a cache of the internal structures for the offered textures by the sink.

#### V4L2 changes

- More pixels formats are now supported
- Decoder is now using `G_SELECTION` instead of the deprecated `G_CROP`
- Decoder now uses the `STOP` command to handle EOS
- Transform element can now scale the pixel aspect ratio
- Colorimetry support has been improved even more
- We now support the `OUTPUT_OVERLAY` type of video node in v4l2sink

#### Miscellaneous

- `multiqueue`'s input pads gained a new `"group-id"` property which
  can be used to group input streams. Typically one will assign
  different id numbers to audio, video and subtitle streams for
  example. This way `multiqueue` can make sure streams of the same
  type advance in lockstep if some of the streams are unlinked and the
  `"sync-by-running-time"` property is set. This is used in
  decodebin3/playbin3 to implement almost-instantaneous stream
  switching.  The grouping is required because different downstream
  paths (audio, video, etc.)  may have different buffering/latency
  etc. so might be consuming data from multiqueue with a slightly
  different phase, and if we track different stream groups separately
  we minimize stream switching delays and buffering inside the
  `multiqueue`.
- `alsasrc` now supports ALSA drivers without a position for each
  channel, this is common in some professional or industrial hardware.
- `libvpx` based decoders (`vp8dec` and `vp9dec`) now create multiple threads on
  computers with multiple CPUs automatically.
- `rfbsrc` - used for capturing from a VNC server - has seen a lot of
  debugging. It now supports the latest version of the RFB
  protocol and uses GIO everywhere.
- `tsdemux` can now read ATSC E-AC-3 streams.
- New `GstVideoDirection` video orientation interface for rotating, flipping
  and mirroring video in 90° steps. It is implemented by the `videoflip` and
  `glvideoflip` elements currently.
- It is now possible to give `appsrc` a duration in time, and there is now a
  non-blocking try-pull API for `appsink` that returns NULL if nothing is
  available right now.
- `x264enc` has support now for chroma-site and colorimetry settings
- A new JPEG2000 parser element was added, and the JPEG2000 caps were cleaned
  up and gained more information needed in combination with RTP and various
  container formats.
- Reverse playback support for `videorate` and `deinterlace` was implemented
- Various improvements everywhere for reverse playback and `KEY_UNITS` trick mode
- New cleaned up `rawaudioparse` and `rawvideoparse` elements that replace the
  old `audioparse` and `videoparse` elements. There are compatibility element
  factories registered with the old names to allow existing code to continue
  to work.
- The Decklink plugin gained support for 10 bit video SMPTE timecodes, and
  generally got many bugfixes for various issues.
- New API in `GstPlayer` for setting the multiview mode for stereoscopic
  video, setting an HTTP/RTSP user agent and a time offset between audio and
  video. In addition to that, there were various bugfixes and the new
  gst-examples module contains Android, iOS, GTK+ and Qt example applications.
- `GstBin` has new API for suppressing various `GstElement` or `GstObject`
  flags that would otherwise be affected by added/removed child elements. This
  new API allows `GstBin` subclasses to handle for themselves if they
  should be considered a sink or source element, for example.
- The `subparse` element can handle WebVTT streams now.
- A new `sdpsrc` element was added that can read an SDP from a file, or get it
  as a string as property and then sets up an RTP pipeline accordingly.

### Plugin moves

No plugins were moved this cycle. We'll make up for it next cycle, promise!

### Rewritten memory leak tracer

GStreamer has had basic functionality to trace allocation and freeing of
both mini-objects (buffers, events, caps, etc.) and objects in the form of the
internal `GstAllocTrace` tracing system. This API was never exposed in the
1.x API series though. When requested, this would dump a list of objects and
mini-objects at exit time which had still not been freed at that point,
enabled with an environment variable. This subsystem has now been removed
in favour of a new implementation based on the recently-added tracing framework.

Tracing hooks have been added to trace the creation and destruction of
GstObjects and mini-objects, and a new tracer plugin has been written using
those new hooks to track which objects are still live and which are not. If
GStreamer has been compiled against the libunwind library, the new leaks tracer
will remember where objects were allocated from as well. By default the leaks
tracer will simply output a warning if leaks have been detected on `gst_deinit()`.

If the `GST_LEAKS_TRACER_SIG` environment variable is set, the leaks tracer
will also handle the following UNIX signals:

 - `SIGUSR1`: log alive objects
 - `SIGUSR2`: create a checkpoint and print a list of objects created and
   destroyed since the previous checkpoint.

Unfortunately this will not work on Windows due to no signals, however.

If the `GST_LEAKS_TRACER_STACK_TRACE` environment variable is set, the leaks
tracer will also log the creation stack trace of leaked objects. This may
significantly increase memory consumption however.

New `MAY_BE_LEAKED` flags have been added to GstObject and GstMiniObject, so
that objects and mini-objects that are likely to stay around forever can be
flagged and blacklisted from the leak output.

To give the new leak tracer a spin, simply call any GStreamer application such
as `gst-launch-1.0` or `gst-play-1.0` like this:

    GST_TRACERS=leaks gst-launch-1.0 videotestsrc num-buffers=10 ! fakesink

If there are any leaks, a warning will be raised at the end.

It is also possible to trace only certain types of objects or mini-objects:

    GST_TRACERS="leaks(GstEvent,GstMessage)" gst-launch-1.0 videotestsrc num-buffers=10 ! fakesink

This dedicated leaks tracer is much much faster than valgrind since all code is
executed natively instead of being instrumented. This makes it very suitable
for use on slow machines or embedded devices. It is however limited to certain
types of leaks and won't catch memory leaks when the allocation has been made
via plain old `malloc()` or `g_malloc()` or other means. It will also not trace
non-GstObject GObjects.

The goal is to enable leak tracing on GStreamer's Continuous-Integration and
testing system, both for the regular unit tests (make check) and media tests
(gst-validate), so that accidental leaks in common code paths can be detected
and fixed quickly.

For more information about the new tracer, check out Guillaume Desmottes's
["Tracking Memory Leaks"][leaks-talk] talk or his [blog post][leaks-blog] about
the topic.

[leaks-talk]: https://gstconf.ubicast.tv/videos/tracking-memory-leaks/
[leaks-blog]: https://blog.desmottes.be/?post/2016/06/20/GStreamer-leaks-tracer

### GES and NLE changes

- Clip priorities are now handled by the layers, and the GESTimelineElement
  priority property is now deprecated and unused
- Enhanced (de)interlacing support to always use the `deinterlace` element
  and expose needed properties to users
- Allow reusing clips children after removing the clip from a layer
- We are now testing many more rendering formats in the gst-validate
  test suite, and failures have been fixed.
- Also many bugs have been fixed in this cycle!

### GStreamer validate changes

This cycle has been focused on making GstValidate more than just a validating
tool, but also a tool to help developers debug their GStreamer issues. When
reporting issues, we try to gather as much information as possible and expose
it to end users in a useful way. For an example of such enhancements, check out
Thibault Saunier's [blog post](improving-debugging-gstreamer-validate) about
the new Not Negotiated Error reporting mechanism.

Playbin3 support has been added so we can run validate tests with `playbin3`
instead of playbin.

We are now able to properly communicate between `gst-validate-launcher` and
launched subprocesses with actual IPC between them. That has enabled the test
launcher to handle failing tests specifying the exact expected issue(s).

[improving-debugging-gstreamer-validate]: https://blogs.s-osg.org/improving-debugging-gstreamer-validate/

### gst-libav changes

gst-libav uses the recently released ffmpeg 3.2 now, which brings a lot of
improvements and bugfixes from the ffmpeg team in addition to various new
codec mappings on the GStreamer side and quite a few bugfixes to the GStreamer
integration to make it more robust.

## Build and Dependencies

### Experimental support for Meson as build system

#### Overview

We have have added support for building GStreamer using the
[Meson build system][meson]. This is currently experimental, but should work
fine at least on Linux using the gcc or clang toolchains and on Windows using
the MingW or MSVC toolchains.

Autotools remains the primary build system for the time being, but we hope to
someday replace it and will steadily work towards that goal.

More information about the background and implications of all this and where
we're hoping to go in future with this can be found in [Tim's mail][meson-mail]
to the gstreamer-devel mailing list.

For more information on Meson check out [these videos][meson-videos] and also
the [Meson talk][meson-gstconf] at the GStreamer Conference.

Immediate benefits for Linux users are faster builds and rebuilds. At the time
of writing the Meson build of GStreamer is used by default in GNOME's jhbuild
system.

The Meson build currently still lacks many of the fine-grained configuration
options to enable/disable specific plugins. These will be added back in due
course.

Note: The meson build files are not distributed in the source tarballs, you will
need to get GStreamer from git if you want try it out.

[meson]: http://mesonbuild.com/
[meson-mail]: https://lists.freedesktop.org/archives/gstreamer-devel/2016-September/060231.html
[meson-videos]: http://mesonbuild.com/videos.html
[meson-gstconf]: https://gstconf.ubicast.tv/videos/gstreamer-development-on-windows-ans-faster-builds-everywhere-with-meson/

#### Windows Visual Studio toolchain support

Windows users might appreciate being able to build GStreamer using the MSVC
toolchain, which is not possible using autotools. This means that it will be
possible to debug GStreamer and applications in Visual Studio, for example.
We require VS2015 or newer for this at the moment.

There are two ways to build GStreamer using the MSVC toolchain:

1. Using the MSVC command-line tools (`cl.exe` etc.) via Meson's "ninja" backend.
2. Letting Meson's "vs2015" backend generate Visual Studio project files that
   can be opened in Visual Studio and compiled from there.

This is currently only for adventurous souls though. All the bits are in place,
but support for all of this has not been merged into GStreamer's cerbero build
tool yet at the time of writing. This will hopefully happen in the next cycle,
but for now this means that those wishing to compile GStreamer with MSVC will
have to get their hands dirty.

There are also no binary SDK builds using the MSVC toolchain yet.

For more information on GStreamer builds using Meson and the Windows toolchain
check out Nirbheek Chauhan's blog post ["Building and developing GStreamer using Visual Studio"][msvc-blog].

[msvc-blog]: http://blog.nirbheek.in/2016/07/building-and-developing-gstreamer-using.html

### Dependencies

#### gstreamer

libunwind was added as an optional dependency. It is used only for debugging
and tracing purposes.

The `opencv` plugin in gst-plugins-bad can now be built against OpenCV
version 3.1, previously only 2.3-2.5 were supported.

#### gst-plugins-ugly

- `mpeg2dec` now requires at least libmpeg2 0.5.1 (from 2008).

#### gst-plugins-bad

- `gltransformation` now requires at least graphene 1.4.0.

- `lv2` now plugin requires at least lilv 0.16 instead of slv2.

### Packaging notes

Packagers please note that the `gst/gstconfig.h` public header file in the
GStreamer core library moved back from being an architecture dependent include
to being architecture independent, and thus it is no longer installed into
`$(libdir)/gstreamer-1.0/include/gst` but into the normal include directory
where it lives happily ever after with all the other public header files. The
reason for this is that we now check whether the target supports unaligned
memory access based on predefined compiler macros at compile time instead of
checking it at configure time.

## Platform-specific improvements

### Android

#### New universal binaries for all supported ABIs

We now provide a "universal" tarball to allow building apps against all the
architectures currently supported (x86, x86-64, armeabi, armeabi-v7a,
armeabi-v8a). This is needed for building with recent versions of the Android
NDK which defaults to building against all supported ABIs. Use [the Android
player example][android-player-example-build] as a reference for the required
changes.

[android-player-example-build]: https://cgit.freedesktop.org/gstreamer/gst-examples/commit/playback/player/android?id=a5cdde9119f038a1eb365aca20faa9741a38e788

#### Miscellaneous

- New `ahssrc` element that allows reading the hardware sensors, e.g. compass
  or accelerometer.

### macOS (OS/X) and iOS

- Support for querying available devices on OS/X via the GstDeviceProvider
  API was added.
- It is now possible to create OpenGL|ES 3.x contexts on iOS and use them in
  combination with the VideoToolbox based decoder element.
- many OpenGL/GLES improvements, see OpenGL section above

### Windows

- gstconfig.h: Always use dllexport/import on Windows with MSVC
- Miscellaneous fixes to make libs and plugins compile with the MVSC toolchain
- MSVC toolchain support (see Meson section above for more details)

## New Modules for Documentation, Examples, Meson Build

Three new git modules have been added recently:

### gst-docs

This is a new module where we will maintain documentation in the markdown
format.

It contains the former gstreamer.com SDK tutorials which have kindly been made
available by Fluendo under a Creative Commons license. The tutorials have been
reviewed and updated for GStreamer 1.x and will be available as part of the
[official GStreamer documentation][doc] going forward. The old gstreamer.com
site will then be shut down with redirects pointing to the updated tutorials.

Some of the existing docbook XML-formatted documentation from the GStreamer
core module such as the *Application Development Manual* and the *Plugin
Writer's Guide* have been converted to markdown as well and will be maintained
in the gst-docs module in future. They will be removed from the GStreamer core
module in the next cycle.

This is just the beginning. Our goal is to provide a more cohesive documentation
experience for our users going forward, and easier to create and maintain
documentation for developers. There is a lot more work to do, get in touch if
you want to help out.

If you encounter any problems or spot any omissions or outdated content in the
new documentation, please [file a bug in bugzilla][doc-bug] to let us know.

We will probably release gst-docs as a separate tarball for distributions to
package in the next cycle.

[doc]: http://gstreamer.freedesktop.org/documentation/
[doc-bug]: https://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer&component=documentation

### gst-examples

A new [module][examples-git] has been added for examples. It does not contain
much yet, currently it only contains a small [http-launch][http-launch] utility
that serves a pipeline over http as well as various [GstPlayer playback frontends][puis]
for Android, iOS, Gtk+ and Qt.

More examples will be added over time. The examples in this repository should
be more useful and more substantial than most of the examples we ship as part
of our other modules, and also written in a way that makes them good example
code. If you have ideas for examples, let us know.

No decision has been made yet if this module will be released and/or packaged.
It probably makes sense to do so though.

[examples-git]: https://cgit.freedesktop.org/gstreamer/gst-examples/tree/
[http-launch]: https://cgit.freedesktop.org/gstreamer/gst-examples/tree/network/http-launch/
[puis]: https://cgit.freedesktop.org/gstreamer/gst-examples/tree/playback/player

### gst-build

[gst-build][gst-build-git] is a new meta module to build GStreamer using the
new Meson build system. This module is not required to build GStreamer with
Meson, it is merely for convenience and aims to provide a development setup
similar to the existing `gst-uninstalled` setup.

gst-build makes use of Meson's [subproject feature][meson-subprojects] and sets
up the various GStreamer modules as subprojects, so they can all be updated and
built in parallel.

This module is still very new and highly experimental. It should work at least
on Linux and Windows (OS/X needs some build fixes). Let us know of any issues
you encounter by popping into the `#gstreamer` IRC channel or by
[filing a bug][gst-build-bug].

This module will probably not be released or packaged (does not really make sense).

[gst-build-git]: https://cgit.freedesktop.org/gstreamer/gst-build/tree/
[gst-build-bug]: https://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer&component=gst-build
[meson-subprojects]: https://github.com/mesonbuild/meson/wiki/Subprojects

## Contributors

Aaron Boxer, Aleix Conchillo Flaqué, Alessandro Decina, Alexandru Blu, Alex
Ashley, Alex-P. Natsios, Alistair Buxton, Allen Zhang, Andreas Naumann, Andrew
Eikum, Andy Devar, Anthony G. Basile, Arjen Veenhuizen, Arnaud Vrac, Artem
Martynovich, Arun Raghavan, Aurélien Zanelli, Barun Kumar Singh, Bernhard
Miller, Brad Lackey, Branko Subasic, Carlos Garcia Campos, Carlos Rafael
Giani, Christoffer Stengren, Daiki Ueno, Damian Ziobro, Danilo Cesar Lemes de
Paula, David Buchmann, Dimitrios Katsaros, Duncan Palmer, Edward Hervey,
Emmanuel Poitier, Enrico Jorns, Enrique Ocaña González, Fabrice Bellet,
Florian Zwoch, Florin Apostol, Francisco Velazquez, Frédéric Bertolus, Fredrik
Fornwall, Gaurav Gupta, George Kiagiadakis, Georg Lippitsch, Göran Jönsson,
Graham Leggett, Gregoire Gentil, Guillaume Desmottes, Gwang Yoon Hwang, Haakon
Sporsheim, Haihua Hu, Havard Graff, Heinrich Fink, Hoonhee Lee, Hyunjun Ko,
Iain Lane, Ian, Ian Jamison, Jagyum Koo, Jake Foytik, Jakub Adam, Jan
Alexander Steffens (heftig), Jan Schmidt, Javier Martinez Canillas, Jerome
Laheurte, Jesper Larsen, Jie Jiang, Jihae Yi, Jimmy Ohn, Jinwoo Ahn, Joakim
Johansson, Joan Pau Beltran, Jonas Holmberg, Jonathan Matthew, Jonathan Roy,
Josep Torra, Julien Isorce, Jun Ji, Jürgen Slowack, Justin Kim, Kazunori
Kobayashi, Kieran Bingham, Kipp Cannon, Koop Mast, Kouhei Sutou, Kseniia, Kyle
Schwarz, Kyungyong Kim, Linus Svensson, Luis de Bethencourt, Marcin Kolny,
Marcin Lewandowski, Marianna Smidth Buschle, Mario Sanchez Prada, Mark
Combellack, Mark Nauwelaerts, Martin Kelly, Matej Knopp, Mathieu Duponchelle,
Mats Lindestam, Matthew Gruenke, Matthew Waters, Michael Olbrich, Michal Lazo,
Miguel París Díaz, Mikhail Fludkov, Minjae Kim, Mohan R, Munez, Nicola Murino,
Nicolas Dufresne, Nicolas Huet, Nikita Bobkov, Nirbheek Chauhan, Olivier
Crête, Paolo Pettinato, Patricia Muscalu, Paulo Neves, Peng Liu, Peter
Seiderer, Philippe Normand, Philippe Renon, Philipp Zabel, Pierre Lamot, Piotr
Drg, Prashant Gotarne, Raffaele Rossi, Ray Strode, Reynaldo H. Verdejo
Pinochet, Santiago Carot-Nemesio, Scott D Phillips, Sebastian Dröge, Sebastian
Rasmussen, Sergei Saveliev, Sergey Borovkov, Sergey Mamonov, Sergio Torres
Soldado, Seungha Yang, sezero, Song Bing, Sreerenj Balachandran, Stefan Sauer,
Stephen, Steven Hoving, Stian Selnes, Thiago Santos, Thibault Saunier, Thijs
Vermeir, Thomas Bluemel, Thomas Jones, Thomas Klausner, Thomas Scheuermann,
Tim-Philipp Müller, Ting-Wei Lan, Tom Schoonjans, Ursula Maplehurst, Vanessa
Chipirras Navalon, Víctor Manuel Jáquez Leal, Vincent Penquerc'h, Vineeth TM,
Vivia Nikolaidou, Vootele Vesterblom, Wang Xin-yu (, William Manley,
Wim Taymans, Wonchul Lee, Xabier Rodriguez Calvar, Xavier Claessens, xlazom00,
Yann Jouanin, Zaheer Abbas Merali

... and many others who have contributed bug reports, translations, sent
suggestions or helped testing.

## Bugs fixed in 1.10

More than [750 bugs][bugs-fixed-in-1.10] have been fixed during
the development of 1.10.

This list does not include issues that have been cherry-picked into the
stable 1.8 branch and fixed there as well, all fixes that ended up in the
1.8 branch are also included in 1.10.

This list also does not include issues that have been fixed without a bug
report in bugzilla, so the actual number of fixes is much higher.

[bugs-fixed-in-1.10]: https://bugzilla.gnome.org/buglist.cgi?bug_status=RESOLVED&bug_status=VERIFIED&classification=Platform&limit=0&list_id=164074&order=bug_id&product=GStreamer&query_format=advanced&resolution=FIXED&target_milestone=1.8.1&target_milestone=1.8.2&target_milestone=1.8.3&target_milestone=1.8.4&target_milestone=1.9.1&target_milestone=1.9.2&target_milestone=1.9.90&target_milestone=1.10.0

## Stable 1.10 branch

After the 1.10.0 release there will be several 1.10.x bug-fix releases which
will contain bug fixes which have been deemed suitable for a stable branch,
but no new features or intrusive changes will be added to a bug-fix release
usually. The 1.10.x bug-fix releases will be made from the git 1.10 branch,
which is a stable branch.

### 1.10.0

1.10.0 was released on 1st November 2016.

## Known Issues

- iOS builds with iOS 6 SDK and old C++ STL. You need to select iOS 6 instead
  of 7 or 8 in your projects settings to be able to link applications.
  [Bug #766366](https://bugzilla.gnome.org/show_bug.cgi?id=766366)
- Code signing for Apple platforms has some problems currently, requiring
  manual work to get your application signed. [Bug #771860](https://bugzilla.gnome.org/show_bug.cgi?id=771860)
- Building applications with Android NDK r13 on Windows does not work. Other
  platforms and earlier/later versions of the NDK are not affected.
  [Bug #772842](https://bugzilla.gnome.org/show_bug.cgi?id=772842)
- The new leaks tracer may deadlock the application (or exhibit other undefined
  behaviour) when `SIGUSR` handling is enabled via the `GST_LEAKS_TRACER_SIG`
  environment variable. [Bug #770373](https://bugzilla.gnome.org/show_bug.cgi?id=770373)
- vp8enc crashes on 32 bit Windows, but was working fine in 1.6. 64 bit Windows is unaffected.
  [Bug #763663](https://bugzilla.gnome.org/show_bug.cgi?id=763663)

## Schedule for 1.12

Our next major feature release will be 1.12, and 1.11 will be the unstable
development version leading up to the stable 1.12 release. The development
of 1.11/1.12 will happen in the git master branch.

The plan for the 1.12 development cycle is yet to be confirmed, but it is
expected that feature freeze will be around early/mid-January,
followed by several 1.11 pre-releases and the new 1.12 stable release
in March.

1.12 will be backwards-compatible to the stable 1.10, 1.8, 1.6, 1.4, 1.2 and
1.0 release series.

- - -

*These release notes have been prepared by Olivier Crête, Sebastian Dröge,
Nicolas Dufresne, Edward Hervey, Víctor Manuel Jáquez Leal, Tim-Philipp
Müller, Reynaldo H. Verdejo Pinochet, Arun Raghavan, Thibault Saunier,
Jan Schmidt, Wim Taymans, Matthew Waters*

*License: [CC BY-SA 4.0](http://creativecommons.org/licenses/by-sa/4.0/)*

Revision 1.6 / (download) - annotate - [select for diffs], Fri Apr 15 14:20:00 2016 UTC (3 years, 11 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2016Q3-base, pkgsrc-2016Q3, pkgsrc-2016Q2-base, pkgsrc-2016Q2
Changes since 1.5: +12 -2 lines
Diff to previous 1.5 (colored)

Update gstreamer1 and plugins to 1.8.0.

GStreamer 1.8.0 was released on 24 March 2016.

The GStreamer team is proud to announce a new major feature release
in the stable 1.x API series of your favourite cross-platform
multimedia framework!

As always, this release is again packed with new features, bug fixes
and other improvements.

See https://gstreamer.freedesktop.org/releases/1.8/ for the latest
version of this document.

Highlights

    Hardware-accelerated zero-copy video decoding on Android

    New video capture source for Android using the android.hardware.Camera
    API

    Windows Media reverse playback support (ASF/WMV/WMA)

    New tracing system provides support for more sophisticated
    debugging tools

    New high-level GstPlayer playback convenience API

    Initial support for the new Vulkan API, see Matthew Waters'
    blog post for more details

    Improved Opus audio codec support: Support for more than two
    channels; MPEG-TS demuxer/muxer can now handle Opus; sample-accurate
    encoding/decoding/transmuxing with Ogg, Matroska, ISOBMFF
    (Quicktime/MP4), and MPEG-TS as container; new codec utility
    functions for Opus header and caps handling in pbutils library.
    The Opus encoder/decoder elements were also moved to gst-plugins-base
    (from -bad), and the opus RTP depayloader/payloader to -good.

    GStreamer VAAPI module now released and maintained as part of
    the GStreamer project

    Asset proxy support in the GStreamer Editing Services

Revision 1.5 / (download) - annotate - [select for diffs], Wed Nov 18 12:04:16 2015 UTC (4 years, 4 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2016Q1-base, pkgsrc-2016Q1, pkgsrc-2015Q4-base, pkgsrc-2015Q4
Changes since 1.4: +22 -2 lines
Diff to previous 1.4 (colored)

Update gstreamer1 and plugins to 1.6.1.

GStreamer 1.6.1 Release Notes

The GStreamer team is proud to announce the first bugfix release in the stable 1.6 release series of your favourite cross-platform multimedia framework!

This release only contains bugfixes and it is safe to update from 1.6.0. For a full list of bugfixes see Bugzilla.

See http://gstreamer.freedesktop.org/releases/1.6/ for the latest version of this document.

Last updated: Friday 30 October 2015, 14:00 UTC (log)
Major bugfixes

    Crashes in the gst-libav encoders were fixed
    More DASH-IF test streams are working now
    Live DASH, HLS and MS SmoothStreaming streams work more reliable and other fixes for the adaptive streaming protocols
    Reverse playback works with scaletempo to keep the audio pitch
    Correct stream-time is reported for negative applied_rate
    SRTP packet validation during decoding does not reject valid packets anymore
    Fixes for audioaggregator and aggregator to start producing output at the right time, and e.g. not outputting lots of silence in the beginning
    gst-libav's internal ffmpeg snapshot was updated to 2.8.1
    cerbero has support for Mac OS X 10.11 (El Capitan)
    Various memory leaks were fixed, including major leaks in playbin, playsink and decodebin
    Various GObject-Introspection annotation fixes for bindings
    and many, many more

GStreamer 1.6 Release Notes

The GStreamer team is proud to announce a new major feature release in the stable 1.x API series of your favourite cross-platform multimedia framework!

This release has been in the works for more than a year and is packed with new features, bug fixes and other improvements.

See http://gstreamer.freedesktop.org/releases/1.6/ for the latest version of this document.
Highlights

    Stereoscopic 3D and multiview video support
    Trick mode API for key-frame only fast-forward/fast-reverse playback etc.
    Improved DTS (decoding timestamp) vs. PTS (presentation timestamp) handling to account for negative DTS
    New GstVideoConverter API for more optimised and more correct conversion of raw video frames between all supported formats, with rescaling
    v4l2src now supports renegotiation
    v4l2transform can now do scaling
    V4L2 Element now report Colorimetry properly
    Easier chunked recording of MP4, Matroska, Ogg, MPEG-TS: new splitmuxsink and multifilesink improvements
    Content Protection signalling API and Common Encryption (CENC) support for DASH/MP4
    Many adaptive streaming (DASH, HLS and MSS) improvements
    New PTP and NTP network client clocks and better remote clock tracking stability
    High-quality text subtitle overlay at display resolutions with glimagesink or gtkglsink
    RECORD support for the GStreamer RTSP Server
    Retransmissions (RTX) support in RTSP server and client
    RTSP seeking support in client and server has been fixed
    RTCP scheduling improvements and reduced size RTCP support
    MP4/MOV muxer acquired a new "robust" mode of operation which attempts to keep the output file in a valid state at all times
    Live mixing support in aggregator, audiomixer and compositor was improved a lot
    compositor now also supports rescaling of inputs streams on the fly
    New audiointerleave element with proper input synchronisation and live input support
    Blackmagic Design DeckLink capture and playback card support was rewritten from scratch; 2k/4k support; mode sensing
    KLV metadata support in RTP and MPEG-TS
    H.265 video encoder (x265), decoders (libav, libde265) and RTP payloader and depayloaders
    New DTLS plugin and SRTP/DTLS support
    OpenGL3 support, multiple contexts and context propagation, 3D video, transfer/conversion separation, subtitle blending
    New OpenGL-based QML video sink, Gtk GL video sink, CoreAnimation CAOpenGLLayerSink video sink
    gst-libav switched to ffmpeg as libav-provider, gains support for 3D/multiview video, trick modes, and the CAVS codec
    GstHarness API for unit tests
    gst-editing-services got a completely new ges-launch-1.0 interface, improved mixing support and integration into gst-validate
    gnonlin has been deprecated in favor of nle (Non Linear Engine) in gst-editing-services
    gst-validate has a new plugin system, an extensive default testsuite, support for concurrent test runs and valgrind support
    cerbero build tool for SDK binary packages gains new 'bundle-source' command
    Various improvements to the Android, iOS, OS X and Windows platform support

Full log at
http://gstreamer.freedesktop.org/releases/1.6/

Revision 1.4 / (download) - annotate - [select for diffs], Fri Aug 8 21:25:41 2014 UTC (5 years, 7 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2015Q3-base, pkgsrc-2015Q3, pkgsrc-2015Q2-base, pkgsrc-2015Q2, pkgsrc-2015Q1-base, pkgsrc-2015Q1, pkgsrc-2014Q4-base, pkgsrc-2014Q4, pkgsrc-2014Q3-base, pkgsrc-2014Q3
Changes since 1.3: +37 -2 lines
Diff to previous 1.3 (colored)

Update to 1.4.0:

This is GStreamer Base Plugins 1.4.0

Changes since 1.2:

New API:
 GstMessageType has GST_MESSAGE_EXTENDED added. All types before
   that can be used together as a flags type as before, but from
   that message onwards the types are just counted incrementally.
   This was necessary to be able to add more message types.
   In 2.0 GstMessageType will just become an enum and not a flags
   type anymore.
 GstDeviceMonitor for device probing, e.g. to list all available
   audio or video capture devices. This is the replacement for
   GstPropertyProbe from 0.10.
 Events accumulate the running-time offset now when travelling
   through pads, as set by the gst_pad_set_offset() function. This
   allows to compensate for this in the QOS event for example.
 GstBuffer has a new flag "tag-memory" that is set automatically
   when memory is added or removed to a buffer. This allows buffer
   pools to detect if they can recycle a buffer or need to reset
   it first.
 GstToc has new API to mark GstTocEntries as loops.
 A not-authorized resource error has been defined to notify
   applications that accessing the resource has failed because
   of missing authorization and to distinguish this case from others.
   This change is actually already in 1.2.4.
 GstPad has a new flag "accept-intersect", that will let the default
   ACCEPT_CAPS query handler do an intersection instead of subset check.
   This is interesting for parser elements that can handle incomplete
   caps.
 GstCollectPads has support for flushing and a default handler for
   SEEK events now.
 New GstFlowAggregator helper object that simplifies handling of
   flow returns in elements with multiple source pads. Additionally
   GstPad now always stores the last flow return and provides an
   API to retrieve it.
 GstSegment has new API to offset the running time by a specific
   value and this is used in GstPad to allow positive and negative
   offsets in gst_pad_set_offset() in all situations.
 Support for h265/HEVC and VP8 has been added to the codec utils and codec
   parsers library, and was integrated into various elements.
 API for adjusting the TLS validation of RTSP connection has been added.
 The RTSP and SDP library has MIKEY (RFC 3830) support now, and
   there is API to distinguish between the different RTSP profiles.
 API to access RTP time information and statistics.
 Support for auxiliary streams was added to rtpbin.
 Support for tiled, raw video formats has been added.
 GstVideoDecoder and GstAudioDecoder have API to help aggregating tag
   events and merge custom tags into them consistently.
 GstBufferPool has support for flushing now.
 playbin/playsink has support for application provided audio and video
   filters.
 GstDiscoverer has new and simplified API to get details about missing
   plugins and information to pass to the plugin installer.
 The GL library was merged from gst-plugins-gl to gst-plugins-bad,
   providing a generic infrastructure for handling GL inside GStreamer
   pipelines and a plugin with some elements using these, especially
   a video sink. Supported platforms currently are Android, Cocoa (OS X),
   DispManX (Raspberry Pi), EAGL (iOS), WGL (Windows) and generic X11,
   Wayland and EGL platforms.
   This replaces eglglessink and also is supposed to replace osxvideosink.
 New GstAggregator base class in gst-plugins-bad. This is supposed to
   replace GstCollectPads in the future and fix long-known shortcomings
   in its API. Together with the base class some elements are provided
   already, like a videomixer (compositor).


Major changes:
 New plugins and elements:
   v4l2videodec element for accessing hardware codecs on
     platforms that make them accessible via V4L2, e.g.
     Samsung Exynos. This comes together with major refactoring
     of the existing V4L2 elements and the corresponding
     infrastructure.
     The v4l2videodec element replaces the mfcdec element.
   New downloadbuffer element that replaces the download
     buffering feature of queue2. Compared to queue2's code
     it is much simpler and only for this single use case.
     A noteworthy new feature is that it's downloading gaps
     in the already downloaded stream parts when nothing else
     is to be downloaded.
     This is now used by playbin when download buffering is
     enabled.
   rtpstreampay and rtpstreamdepay elements for transmitting
     RTP packets over a stream API (e.g. TCP) according to
     RFC 4571.
   rtprtx elements for standard compliant implementation of
     retransmissions, integrated into the rtpmanager plugin.
   audiomixer element that mixes multiple audio streams together
     into a single one while keeping synchronization. This is
     planned to become the replacement of the adder element.
   OpenNI2 plugin for 3D cameras like the Kinect camera.
   OpenEXR plugin for decoding high-dynamic-range EXR images.
   curlsshsink and curlsftpsink to write files via SSH/SFTP.
   videosignal, ivfparse and sndfile plugins ported from 0.10.
   avfvideosrc, vtdec and other elements were ported from 0.10 and
     are available on OS X and iOS now.

 Other changes:
   gst-libav now uses libav 10.2, and gained support for H265/HEVC.
   Support for hardware codecs and special memory types has been
     improved with bugfixes and feature additions in various plugins
     and base classes.
   Various bugfixes and improvements to buffering in queue2 and
     multiqueue elements.
   dvbsrc supports more delivery mechanisms and other features
     now, including DVB S2 and T2 support.
   The MPEGTS library has support for many more descriptors.
   Major improvements to tsdemux and tsparse, especially time and
     seeking related.
   souphttpsrc now has support for keep-alive connections,
     compression, configurable number of retries and configuration
     for SSL certificate validation.
   hlsdemux has undergone major refactoring and works more
     reliable now and supports more HLS features like trick modes.
     Also fragments are pushed downstream while they're downloaded
     now instead of waiting for each fragment to finish.
   dashdemux and mssdemux are now also pushing fragments downstream
     while they're downloaded instead of waiting for each fragment to
     finish.
   videoflip can automatically flip based on the orientation tag.
   openjpeg supports the OpenJPEG2 API.
   waylandsink was refactored and should be more useful now. It also
     includes a small library which most likely is going to be removed
     in the future and will result in extensions to the GstVideoOverlay
     interface.
   gst-rtsp-server supports SRTP and MIKEY now.
   gst-libav encoders are now negotiating any profile/level settings
     with downstream via caps.
   Lots of fixes for coverity warnings all over the place.
   Negotiation related performance improvements.
   800+ fixed bug reports, and many other bug fixes and other
     improvements everywhere that had no bug report.

Things to look out for:
 The eglglessink element was removed and replaced by the glimagesink
   element.
 The mfcdec element was removed and replaced by v4l2videodec.
 osxvideosink is only available in OS X 10.6 or newer.
 On Android the namespace of the automatically generated Java class
   for initialization of GStreamer has changed from com.gstreamer to
   org.freedesktop.gstreamer to prevent namespace pollution.
 On iOS you have to update your gst_ios_init.h and gst_ios_init.m in
   your projects from the one included in the binaries if you used the
   GnuTLS GIO module before. The loading mechanism has slightly changed.

Revision 1.3 / (download) - annotate - [select for diffs], Mon Apr 8 16:57:46 2013 UTC (6 years, 11 months ago) by drochner
Branch: MAIN
CVS Tags: pkgsrc-2014Q2-base, pkgsrc-2014Q2, pkgsrc-2014Q1-base, pkgsrc-2014Q1, pkgsrc-2013Q4-base, pkgsrc-2013Q4, pkgsrc-2013Q3-base, pkgsrc-2013Q3, pkgsrc-2013Q2-base, pkgsrc-2013Q2
Changes since 1.2: +23 -1 lines
Diff to previous 1.2 (colored)

update to 1.0.6
changes: bugfixes
pkgsrc change: enabled introspection support (for shotwell)

Revision 1.2 / (download) - annotate - [select for diffs], Fri Mar 15 18:34:47 2013 UTC (7 years ago) by drochner
Branch: MAIN
CVS Tags: pkgsrc-2013Q1-base, pkgsrc-2013Q1
Changes since 1.1: +2 -1 lines
Diff to previous 1.1 (colored)

update to 1.0.5
changes: bugfixes

Revision 1.1 / (download) - annotate - [select for diffs], Thu Nov 29 08:22:29 2012 UTC (7 years, 4 months ago) by ryoon
Branch: MAIN
CVS Tags: pkgsrc-2012Q4-base, pkgsrc-2012Q4

Import gst-plugins1-base-1.0.3 as multimedia/gst-plugins1-base.

GStreamer is a library that allows the construction of graphs of
media-handling components, ranging from simple Ogg/Vorbis playback to
complex audio (mixing) and video (non-linear editing) processing.

Applications can take advantage of advances in codec and filter technology
transparently.  Developers can add new codecs and filters by writing a
simple plugin with a clean, generic interface.

GStreamer is released under the LGPL.

This package is part of the 'base' plugins for GStreamer.  It provides a
set of must-have plugins.

This form allows you to request diff's between any two revisions of a file. You may select a symbolic revision name using the selection box or you may type in a numeric name using the type-in text box.




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