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@@ -1,11 +1,14 @@
GStreamer 1.18 Release Notes
-GStreamer 1.18.0 was originally released on 7 September 2020.
+GStreamer 1.18.0 was originally released on 8 September 2020.
+The latest bug-fix release in the 1.18 series is 1.18.1 and was released
+on 26 October 2020.
See for the latest
version of this document.
-Last updated: Monday 7 September 2020, 10:30 UTC (log)
+Last updated: Monday 26 October 2020, 11:00 UTC (log)
@@ -28,7 +31,8 @@ Highlights
- Active Format Description (AFD) and Bar Data support
-- ONVIF trick modes support in both GStreamer RTSP server and client
+- RTSP server and client implementations gained ONVIF trick modes
+ support
- Hardware-accelerated video decoding on Windows via DXVA2 /
@@ -39,24 +43,25 @@ Highlights
- qmlgloverlay: New overlay element that renders a QtQuick scene over
the top of an input video stream
-- New imagesequencesrc element to easily create a video stream from a
+- imagesequencesrc: New element to easily create a video stream from a
sequence of jpeg or png images
-- dashsink: Add new sink to produce DASH content
+- dashsink: New sink to produce DASH content
-- dvbsubenc: DVB Subtitle encoder element
+- dvbsubenc: New DVB Subtitle encoder element
-- TV broadcast compliant MPEG-TS muxing with constant bitrate muxing
- and SCTE-35 support
+- MPEG-TS muxing now also supports TV broadcast compliant muxing with
+ constant bitrate muxing and SCTE-35 support
-- rtmp2: new RTMP client source and sink element implementation
+- rtmp2: New RTMP client source and sink element from-scratch
+ implementation
-- svthevcenc: new SVT-HEVC-based H.265 video encoder
+- svthevcenc: New SVT-HEVC-based H.265 video encoder
-- vaapioverlay compositor element using VA-API
+- vaapioverlay: New compositor element using VA-API
-- rtpmanager support for Google’s Transport-Wide Congestion Control
- (twcc) RTP extension
+- rtpmanager gained support for Google’s Transport-Wide Congestion
+ Control (twcc) RTP extension
- splitmuxsink and splitmuxsrc gained support for auxiliary video
@@ -64,18 +69,18 @@ Highlights
- webrtcbin now contains some initial support for renegotiation
involving stream addition and removal
-- New RTP source and sink elements to easily set up RTP streaming via
- rtp:// URIs
+- RTP support was enhanced with new RTP source and sink elements to
+ easily set up RTP streaming via rtp:// URIs
-- New Audio Video Transport Protocol (AVTP) plugin for Time-Sensitive
- Applications
+- avtp: New Audio Video Transport Protocol (AVTP) plugin for
+ Time-Sensitive Applications
- Support for the Video Services Forum’s Reliable Internet Stream
Transport (RIST) TR-06-1 Simple Profile
- Universal Windows Platform (UWP) support
-- rpicamsrc element for capturing from the Raspberry Pi camera
+- rpicamsrc: New element for capturing from the Raspberry Pi camera
- RTSP Server TCP interleaved backpressure handling improvements as
well as support for Scale/Speed headers
@@ -2179,7 +2184,208 @@ the git 1.18 branch, which will be a stable branch.
-1.18.0 was released on 7 September 2020.
+1.18.0 was released on 8 September 2020.
+The first 1.18 bug-fix release (1.18.1) was released on 26 October 2020.
+This release only contains bugfixes and it should be safe to update from
+Highlighted bugfixes in 1.18.1
+- important security fixes
+- bug fixes and memory leak fixes
+- various stability and reliability improvements
+- aggregator: make peek() has() pop() drop() buffer API threadsafe
+- gstvalue: don’t write to const char *
+- meson: Disallow DbgHelp for UWP build
+- info: Fix build on Windows ARM64 device
+- build: use cpu_family for arch checks
+- basetransform: Fix in/outbuf confusion of _default_transform_meta
+- Fix documentation
+- info: Load DbgHelp.dll using g_module_open()
+- padtemplate: mark documentation caps as may be leaked
+- gstmeta: intern registered impl string
+- aggregator: Hold SRC_LOCK while unblocking via SRC_BROADCAST()
+- deal with none
+- skip elements/leak.c if tracer is not available
+- aggregator: Wake up source pad in PAUSED<->PLAYING transitions
+- input-selector: Wake up blocking pads when releasing them
+- ptp: Also handle gnu/kfreebsd
+- theoradec: Set telemetry options only if they are nonzero
+- glslstage: delete shader on finalize of stage
+- urisourcebin: Fix crash caused by use after free
+- decodebin3: Store stream-start event on output pad before exposing
+ it
+- Add some missing nullable annotations
+- typefind/xdgmime: Validate mimetypes to be valid GstStructure names
+ before using them
+- uridecodebin3: Forward upstream events to decodebin3 directly
+- video-converter: Add fast paths from v210 to I420/YV12, Y42B, UYVY
+ and YUY2
+- videoaggregator: Limit accepted caps by template caps
+- gstrtpbuffer: fix header extension length validation
+- decodebin3: only force streams-selected seqnum after a
+ select-streams
+- videodecoder: don’t copy interlace-mode from reference state
+- enable abi checks
+- multihandlesink: Don’t pass NULL caps to gst_caps_is_equal
+- audio: video: Fix in/outbuf confusion of transform_meta
+- meson: Always wrap “prefix” option with join_paths() to make Windows
+ happy
+- videoaggregator: ensure peek_next_sample() uses the correct caps
+- meson: Actually build gstgl without implicit include dirs
+- videoaggregator: Don’t require any pads to be configured for
+ negotiating source pad caps
+- gst-libs: gl: Fix documentation typo and clarify
+ gl_memory_texsubimage
+- audioaggregator: Reset offset if the output rate is renegotiated
+- video-anc: Implement transform functions for AFD/Bar metas
+- appsrc: Wake up the create() function on caps changes
+- rtpbasepayload: do not forget delayed segment when forwarding gaps
+- v4l2object: Only offer inactive pools and if needed
+- vpx: Fix the check to unfixed/unknown framerate to set bitrate
+- qmlglsink: fix crash when created/destroyed in quick succession
+- rtputils: Count metas with an empty tag list for copying/keeping
+- rtpbin: Remove the rtpjitterbuffer with the stream
+- rtph26*depay: drop FU’s without a corresponding start bit
+- imagefreeze: Response caps query from srcpad
+- rtpmp4gdepay: Allow lower-case “aac-hbr” instead of correct
+ “AAC-hbr”
+- rtspsrc: Fix push-backchannel-buffer parameter mismatch
+- jpegdec: check buffer size before dereferencing
+- flvmux: Move stream skipping to GstAggregatorPadClass.skip_buffer
+- v4l2object: plug memory leak
+- splitmuxsink: fix sink pad release while PLAYING
+- codecparsers: h264parser: guard against ref_pic_markings overflow
+- v4l2codecs: Various fixes
+- h265parse: Don’t enable passthrough by default
+- srt: Fix “Fix timestamping”
+- srt: Fixes for 1.4.2
+- dtlsconnection: Ignore OpenSSL system call errors
+- h265parse: set interlace-mode=interleaved on interlaced content
+- Replace GPL v2 with LGPL v2 in COPYING file
+- srt: Consume the error from gst_srt_object_write
+- srt: Check socket state before retrieving payload size
+- x265enc: fix deadlock on reconfig
+- webrtc: Require gstreamer-sdp in the pkg-config file
+- srtsrc: Fix timestamping
+- mfvideosrc: Use only the first video stream per device
+- srtobject: typecast SRTO_LINGER to linger
+- decklink: Correctly order the different dependent mode tables
+- wasapisrc: Make sure that wasapisrc produces data in loopback mode
+- wpesrc: fix some caps leaks using the non-GL output
+- smoothstreaming: clear live adapter on seek
+- vtdec/vulkan: use Shared storage mode for IOSurface textures
+- wpe: Move webview load waiting to WPEView
+- wpe: Use proper callback for TLS errors signal handling
+- kmssink: Do not source using padded width/height
+- avtp: avtpaafdepay: fix crash when building caps
+- opencv: set opencv_dep when option is disabled to fix the build
+- line21encoder: miscellaneous enhancements
+- Hls youtube issues with urisourcebin/queue2
+- rtmp2: Replace stats queue with stats lock
+- rtmp2sink: support EOS event for graceful connection shutdown
+- mpegtsmux: Make handling of sinkpads thread-safe
+- hlssink2: Actually release splitmuxsink’s pads
+- mpegtsmux: Don’t create streams with reserved PID
+- no changes
+- avaudenc/avvidenc: Reopen encoding session if it’s required
+- avauddec/audenc/videnc: Don’t return GST_FLOW_EOS when draining
+- avauddec/avviddec: Avoid dropping non-OK flow return
+- avcodecmap: Enable 24 bit WMA Lossless decoding
+- rtsp-stream: collect rtp info when blocking
+- rtsp-media: set a 0 storage size for TCP receivers
+- rtsp-stream: preroll on gap events
+- rtsp-media: do not unblock on unsuspend
+- decoder: don’t reply src caps query with allowed if pad is fixed
+- plugins: decode: fix a DMA caps typo in ensure_allowed_srcpad_caps
+- Add bindings for some missing 1.18 API
+- omxvideodec: support interlace-mode=interleaved input
+- no changes
+- ges: Do not recreate auto-transitions when changing clip assets
+- ges: Fix a copy/paste mistake in meson file
+- medias: Update for h265parse passthrough behavior change
+- update validate.test.h265parse.alternate test
+- windows: Detect Strawberry Perl and error out early
+- {pygobject,pycairo}.wrap: point to stable refs
+Cerbero build tool and packaging changes in 1.18.1
+- Add macOS Big Sur support
+- gst-plugins-bad: Ship rtpmanagerbad plugin
+- gstreamer-1.0: Don’t enable DbgHelp for UWP build
+- pango: fix font corruption on windows
+- cairo: use thread local storage to grant one windows HDC per thread
+- small fixes for Xcode 12
+- cerbero: Re-add alsa-devel to bootstrap on Linux
+- FreeType: update to 2.10.4 to fix security vulnerability
+Contributors to 1.18.1
+Aaron Boxer, Adam Williamson, Andrew Wesie, Arun Raghavan, Bastien
+Reboulet, Brent Gardner, Edward Hervey, François Laignel, Guillaume
+Desmottes, Havard Graff, He Junyan, Hosang Lee, Jacek Tomaszewski, Jakub
+Adam, Jan Alexander Steffens (heftig), Jan Schmidt, Jérôme Laheurte,
+Jordan Petridis, Marc Leeman, Marian Cichy, Marijn Suijten, Mathieu
+Duponchelle, Matthew Waters, Michael Tretter, Nazar Mokrynskyi, Nicolas
+Dufresne, Niklas Hambüchen, Nirbheek Chauhan, Olivier Crête, Philippe
+Normand, raghavendra, Ricky Tang, Sebastian Dröge, Seungha Yang,
+sohwan.park, Stéphane Cerveau, Thibault Saunier, Tim-Philipp Müller, Tom
+Schoonjans, Víctor Manuel Jáquez Leal, Will Miller, Xavier Claessens, Xℹ
+Ruoyao, Zebediah Figura,
+… 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 1.18.1
+- List of Merge Requests applied in 1.18.1
+- List of Issues fixed in 1.18.1
Schedule for 1.20