329 lines
10 KiB
Plaintext
329 lines
10 KiB
Plaintext
GStreamer 1.20 Release Notes
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GStreamer 1.20 has not been released yet. It is scheduled for release in
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November 2021.
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1.19.x is the unstable development version that is being developed in
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the git main branch and which will eventually result in 1.20, and 1.19.3
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is the current development release in that series
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It is expected that feature freeze will be in early October 2021,
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followed by one or two 1.19.9x pre-releases and the new 1.20 stable
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release around October/November 2021.
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1.20 will be backwards-compatible to the stable 1.18, 1.16, 1.14, 1.12,
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1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
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See https://gstreamer.freedesktop.org/releases/1.20/ for the latest
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version of this document.
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Last updated: Monday 1 November 2021, 01:00 UTC (log)
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Introduction
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The GStreamer team is proud to announce a new major feature release in
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the stable 1.x API series of your favourite cross-platform multimedia
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framework!
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As always, this release is again packed with many new features, bug
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fixes and other improvements.
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Highlights
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- this section will be completed in due course
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Major new features and changes
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Noteworthy new features and API
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- this section will be filled in in due course
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New elements
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- this section will be filled in in due course
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New element features and additions
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- this section will be filled in in due course
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Plugin and library moves
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- this section will be filled in in due course
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- There were no plugin moves or library moves in this cycle.
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Plugin removals
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The following elements or plugins have been removed:
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- this section will be filled in in due course
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- The ofa audio fingerprinting plugin has been removed. The MusicIP
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database has been defunct for years so this plugin is likely neither
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useful nor used by anyone.
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- The mms plugin containing mmssrc has been removed. It seems unlikely
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anyone still needs this or that there are even any streams left out
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there. The MMS protocol was deprecated in 2003 (in favour of RTSP)
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and support for it was dropped with Microsoft Media Services 2008,
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and Windows Media Player apparently also does not support it any
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more.
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Miscellaneous API additions
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- this section will be filled in in due course
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Miscellaneous performance, latency and memory optimisations
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- this section will be filled in in due course
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Miscellaneous other changes and enhancements
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- this section will be filled in in due course
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Tracing framework and debugging improvements
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- this section will be filled in in due course
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Tools
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- this section will be filled in in due course
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GStreamer RTSP server
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- this section will be filled in in due course
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GStreamer VAAPI
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- this section will be filled in in due course
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GStreamer OMX
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- this section will be filled in in due course
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GStreamer Editing Services and NLE
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- this section will be filled in in due course
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GStreamer validate
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- this section will be filled in in due course
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GStreamer Python Bindings
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- this section will be filled in in due course
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GStreamer C# Bindings
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- this section will be filled in in due course
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GStreamer Rust Bindings and Rust Plugins
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The GStreamer Rust bindings are released separately with a different
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release cadence that’s tied to gtk-rs, but the latest release has
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already been updated for the upcoming new GStreamer 1.20 API.
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gst-plugins-rs, the module containing GStreamer plugins written in Rust,
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has also seen lots of activity with many new elements and plugins.
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What follows is a list of elements and plugins available in
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gst-plugins-rs, so people don’t miss out on all those potentially useful
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elements that have no C equivalent.
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- FIXME: add new elements
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Rust audio plugins
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- audiornnoise: New element for audio denoising which implements the
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noise removal algorithm of the Xiph RNNoise library, in Rust
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- rsaudioecho: Port of the audioecho element from gst-plugins-good
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rsaudioloudnorm: Live audio loudness normalization element based on
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the FFmpeg af_loudnorm filter
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- claxondec: FLAC lossless audio codec decoder element based on the
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pure-Rust claxon implementation
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- csoundfilter: Audio filter that can use any filter defined via the
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Csound audio programming language
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- lewtondec: Vorbis audio decoder element based on the pure-Rust
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lewton implementation
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Rust video plugins
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- cdgdec/cdgparse: Decoder and parser for the CD+G video codec based
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on a pure-Rust CD+G implementation, used for example by karaoke CDs
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- cea608overlay: CEA-608 Closed Captions overlay element
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- cea608tott: CEA-608 Closed Captions to timed-text (e.g. VTT or SRT
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subtitles) converter
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- tttocea608: CEA-608 Closed Captions from timed-text converter
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- mccenc/mccparse: MacCaption Closed Caption format encoder and parser
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- sccenc/sccparse: Scenarist Closed Caption format encoder and parser
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- dav1dec: AV1 video decoder based on the dav1d decoder implementation
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by the VLC project
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- rav1enc: AV1 video encoder based on the fast and pure-Rust rav1e
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encoder implementation
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- rsflvdemux: Alternative to the flvdemux FLV demuxer element from
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gst-plugins-good, not feature-equivalent yet
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- rsgifenc/rspngenc: GIF/PNG encoder elements based on the pure-Rust
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implementations by the image-rs project
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Rust text plugins
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- textwrap: Element for line-wrapping timed text (e.g. subtitles) for
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better screen-fitting, including hyphenation support for some
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languages
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Rust network plugins
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- reqwesthttpsrc: HTTP(S) source element based on the Rust
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reqwest/hyper HTTP implementations and almost feature-equivalent
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with the main GStreamer HTTP source souphttpsrc
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- s3src/s3sink: Source/sink element for the Amazon S3 cloud storage
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- awstranscriber: Live audio to timed text transcription element using
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the Amazon AWS Transcribe API
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Generic Rust plugins
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- sodiumencrypter/sodiumdecrypter: Encryption/decryption element based
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on libsodium/NaCl
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- togglerecord: Recording element that allows to pause/resume
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recordings easily and considers keyframe boundaries
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- fallbackswitch/fallbacksrc: Elements for handling potentially
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failing (network) sources, restarting them on errors/timeout and
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showing a fallback stream instead
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- threadshare: Set of elements that provide alternatives for various
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existing GStreamer elements but allow to share the streaming threads
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between each other to reduce the number of threads
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- rsfilesrc/rsfilesink: File source/sink elements as replacements for
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the existing filesrc/filesink elements
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Build and Dependencies
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- Meson 0.59 or newer is required to build GStreamer now.
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- FIXME: this section will be filled in in due course
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Explicit opt-in required for build of certain plugins with (A)GPL dependencies
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Some plugins have GPL- or AGPL-licensed dependencies and those plugins
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will no longer be built by default unless you have explicitly opted in
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to allow (A)GPL-licensed dependencies by passing -Dgpl=enabled to Meson,
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even if the required dependencies are available.
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See Building plugins with (A)GPL-licensed dependencies for more details
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and a non-exhaustive list of plugins affected.
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gst-build: replaced by Monorepo
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- this section will be filled in in due course
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- FIXME: describe + link to Monorepo FAQ
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Cerbero
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Cerbero is a meta build system used to build GStreamer plus dependencies
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on platforms where dependencies are not readily available, such as
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Windows, Android, iOS and macOS.
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General improvements
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- this section will be filled in in due course
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macOS / iOS
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- this section will be filled in in due course
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Windows
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- this section will be filled in in due course
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Windows MSI installer
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- this section will be filled in in due course
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Linux
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- this section will be filled in in due course
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Android
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- this section will be filled in in due course
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Platform-specific changes and improvements
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Android
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- this section will be filled in in due course
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macOS and iOS
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- this section will be filled in in due course
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Windows
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- this section will be filled in in due course
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Linux
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- this section will be filled in in due course
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Documentation improvements
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- this section will be filled in in due course
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Possibly Breaking Changes
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- FIXME: this section will be filled in in due course
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- MPEG-TS SCTE-35 API changes (FIXME: flesh out)
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- gst_parse_launch() and friends now error out on non-existing
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properties on top-level bins where they would silently fail and
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ignore those before.
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- playbin and uridecodebin now emit the source-setup signal before the
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element is added to the bin and linked so that the source element is
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already configured before any scheduling query comes in, which is
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useful for elements such as appsrc or giostreamsrc. (Merge Request)
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Known Issues
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- this section will be filled in in due course
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- There are a couple of known WebRTC-related regressions/blockers:
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- webrtc: DTLS setup with Chrome is broken
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- webrtcbin: First keyframe is usually lost
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Contributors
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- this section will be filled in in due course
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… and many others who have contributed bug reports, translations, sent
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suggestions or helped testing.
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Stable 1.20 branch
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After the 1.20.0 release there will be several 1.20.x bug-fix releases
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which will contain bug fixes which have been deemed suitable for a
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stable branch, but no new features or intrusive changes will be added to
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a bug-fix release usually. The 1.20.x bug-fix releases will be made from
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the git 1.20 branch, which will be a stable branch.
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1.20.0
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1.20.0 is scheduled to be released around October/November 2021.
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Schedule for 1.22
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Our next major feature release will be 1.22, and 1.21 will be the
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unstable development version leading up to the stable 1.22 release. The
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development of 1.21/1.22 will happen in the git main branch.
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The plan for the 1.22 development cycle is yet to be confirmed.
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1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
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1.12, 1.10, 1.8, 1.6, 1.4, 1.2 and 1.0 release series.
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------------------------------------------------------------------------
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These release notes have been prepared by Tim-Philipp Müller with
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contributions from …
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License: CC BY-SA 4.0
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