gstreamer/subprojects/gst-python/NEWS

GStreamer 1.20 Release Notes

GStreamer 1.20 has not been released yet. It is scheduled for release
around October/November 2021.

1.19.x is the unstable development version that is being developed in
the git main branch and which will eventually result in 1.20, and 1.19.2
is the current development release in that series

It is expected that feature freeze will be in early October 2021,
followed by one or two 1.19.9x pre-releases and the new 1.20 stable
release around October/November 2021.

1.20 will be backwards-compatible to the stable 1.18, 1.16, 1.14, 1.12,
1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.

See https://gstreamer.freedesktop.org/releases/1.20/ for the latest
version of this document.

Last updated: Wednesday 22 September 2021, 18:00 UTC (log)

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

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Major new features and changes

Noteworthy new features and API

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New elements

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New element features and additions

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Plugin and library moves

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-   There were no plugin moves or library moves in this cycle.

Plugin removals

The following elements or plugins have been removed:

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Miscellaneous API additions

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Miscellaneous performance, latency and memory optimisations

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Miscellaneous other changes and enhancements

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Tracing framework and debugging improvements

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Tools

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GStreamer RTSP server

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GStreamer VAAPI

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GStreamer OMX

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GStreamer Editing Services and NLE

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GStreamer validate

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GStreamer Python Bindings

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GStreamer C# Bindings

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GStreamer Rust Bindings and Rust Plugins

The GStreamer Rust bindings are released separately with a different
release cadence that’s tied to gtk-rs, but the latest release has
already been updated for the upcoming new GStreamer 1.20 API.

gst-plugins-rs, the module containing GStreamer plugins written in Rust,
has also seen lots of activity with many new elements and plugins.

What follows is a list of elements and plugins available in
gst-plugins-rs, so people don’t miss out on all those potentially useful
elements that have no C equivalent.

-   FIXME: add new elements

Rust audio plugins

-   audiornnoise: New element for audio denoising which implements the
    noise removal algorithm of the Xiph RNNoise library, in Rust
-   rsaudioecho: Port of the audioecho element from gst-plugins-good
    rsaudioloudnorm: Live audio loudness normalization element based on
    the FFmpeg af_loudnorm filter
-   claxondec: FLAC lossless audio codec decoder element based on the
    pure-Rust claxon implementation
-   csoundfilter: Audio filter that can use any filter defined via the
    Csound audio programming language
-   lewtondec: Vorbis audio decoder element based on the pure-Rust
    lewton implementation

Rust video plugins

-   cdgdec/cdgparse: Decoder and parser for the CD+G video codec based
    on a pure-Rust CD+G implementation, used for example by karaoke CDs
-   cea608overlay: CEA-608 Closed Captions overlay element
-   cea608tott: CEA-608 Closed Captions to timed-text (e.g. VTT or SRT
    subtitles) converter
-   tttocea608: CEA-608 Closed Captions from timed-text converter
-   mccenc/mccparse: MacCaption Closed Caption format encoder and parser
-   sccenc/sccparse: Scenarist Closed Caption format encoder and parser
-   dav1dec: AV1 video decoder based on the dav1d decoder implementation
    by the VLC project
-   rav1enc: AV1 video encoder based on the fast and pure-Rust rav1e
    encoder implementation
-   rsflvdemux: Alternative to the flvdemux FLV demuxer element from
    gst-plugins-good, not feature-equivalent yet
-   rsgifenc/rspngenc: GIF/PNG encoder elements based on the pure-Rust
    implementations by the image-rs project

Rust text plugins

-   textwrap: Element for line-wrapping timed text (e.g. subtitles) for
    better screen-fitting, including hyphenation support for some
    languages

Rust network plugins

-   reqwesthttpsrc: HTTP(S) source element based on the Rust
    reqwest/hyper HTTP implementations and almost feature-equivalent
    with the main GStreamer HTTP source souphttpsrc
-   s3src/s3sink: Source/sink element for the Amazon S3 cloud storage
-   awstranscriber: Live audio to timed text transcription element using
    the Amazon AWS Transcribe API

Generic Rust plugins

-   sodiumencrypter/sodiumdecrypter: Encryption/decryption element based
    on libsodium/NaCl
-   togglerecord: Recording element that allows to pause/resume
    recordings easily and considers keyframe boundaries
-   fallbackswitch/fallbacksrc: Elements for handling potentially
    failing (network) sources, restarting them on errors/timeout and
    showing a fallback stream instead
-   threadshare: Set of elements that provide alternatives for various
    existing GStreamer elements but allow to share the streaming threads
    between each other to reduce the number of threads
-   rsfilesrc/rsfilesink: File source/sink elements as replacements for
    the existing filesrc/filesink elements

Build and Dependencies

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gst-build

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Cerbero

Cerbero is a meta build system used to build GStreamer plus dependencies
on platforms where dependencies are not readily available, such as
Windows, Android, iOS and macOS.

General improvements

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macOS / iOS

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Windows

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Windows MSI installer

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Linux

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Android

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Platform-specific changes and improvements

Android

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macOS and iOS

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Windows

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Linux

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Documentation improvements

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Possibly Breaking Changes

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-   MPEG-TS SCTE-35 API changes (FIXME: flesh out)
-   gst_parse_launch() and friends now error out on non-existing
    properties on top-level bins where they would silently fail and
    ignore those before.

Known Issues

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-   There are a couple of known WebRTC-related regressions/blockers:

    -   webrtc: DTLS setup with Chrome is broken
    -   webrtcbin: First keyframe is usually lost

Contributors

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

Stable 1.20 branch

After the 1.20.0 release there will be several 1.20.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 1.20.x bug-fix releases will be made from
the git 1.20 branch, which will be a stable branch.

1.20.0

1.20.0 is scheduled to be released around October/November 2021.

Schedule for 1.22

Our next major feature release will be 1.22, and 1.21 will be the
unstable development version leading up to the stable 1.22 release. The
development of 1.21/1.22 will happen in the git main branch.

The plan for the 1.22 development cycle is yet to be confirmed.

1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
1.12, 1.10, 1.8, 1.6, 1.4, 1.2 and 1.0 release series.

------------------------------------------------------------------------

These release notes have been prepared by Tim-Philipp Müller with
contributions from …

License: CC BY-SA 4.0