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Release notes for GStreamer 1.9.2

The GStreamer team is pleased to announce the second release of the unstable 1.9 release series, which marks the feature freeze for 1.10. The 1.9 release series is adding new features on top of the 1.0, 1.2, 1.4, 1.6 and 1.8 series and is part of the API and ABI-stable 1.x release series of the GStreamer multimedia framework. The unstable 1.9 release series will lead to the stable 1.10 release series in the next weeks. Any newly added API can still change until that point.

Binaries for Android, iOS, Mac OS X and Windows will be provided in the next days.

This module, gstreamer, only contains core functionality. For actual media playback, you will need other modules.

contains a basic set of well-supported plugins
contains a set of well-supported plugins under our preferred license
contains a set of well-supported plugins, but might pose problems for distributors
contains a set of less supported plugins that haven't passed the rigorous quality testing we expect, or are still missing documentation and/or unit tests
contains a set of codecs plugins based on libav (formerly gst-ffmpeg)

Bugs fixed in this release

  • 631673 : add " redirect " message to core
  • 756806 : message: Add extra information fields to error/warning/info messages
  • 767857 : leaks tracer: list alive objects on demand and add 'checkpointing' support
  • 767862 : leaks tracer: display creation stack trace of leaked objects
  • 768301 : buffer: add explicit setters and getters for GstBufferFlags
  • 768577 : element: clean up thread pool from gst_task_cleanup_all()
  • 768578 : leaks: warn if object is destroyed while the tracer is disposing
  • 768579 : improve some debug/log output
  • 768776 : message: fix annotation of message parse API returning objects
  • 768810 : core: add a couple of transfer annotations
  • 768948 : collectpads: add g-i transfer annotations to peek/pop/read_buffer/take_buffer functions
  • 768989 : leaks: update type filter later for unknown types
  • 768995 : New API: StreamGroupDone event
  • 769449 : queue2: Add higher-resolution low/high-watermark properties
  • 770158 : element: Add API to more easily post messages about flowing issues
  • 770161 : streams: notify tag update only when tags actually changed
  • 770225 : multiqueue: High CPU usage with multiple audio tracks in playbin3
  • 770428 : docs: fix typo on stream selection
  • 770628 : multiqueue: Add higher-resolution low/high-watermark properties


You can find source releases of gstreamer in the gstreamer download directory.

The git repository and details how to clone it can be found at .


The project's website is

Support and Bugs

We use GNOME's bugzilla for bug reports and feature requests.

Please submit patches via bugzilla as well.

For help and support, please subscribe to and send questions to the gstreamer-devel mailing list (see below for details).

Find us on IRC at #gstreamer.


Git is hosted on You can browse the gstreamer repository.

All code is in Git and can be checked out from there.

Interested developers of the core library, plugins, and applications should subscribe to the gstreamer-devel list.

Contributors to this release

  • Arjen Veenhuizen
  • Aurélien Zanelli
  • Carlos Rafael Giani
  • Edward Hervey
  • Guillaume Desmottes
  • Hoonhee Lee
  • Jan Schmidt
  • Josep Torra
  • Miguel París Díaz
  • Nirbheek Chauhan
  • Sebastian Dröge
  • Stefan Sauer
  • Thibault Saunier
  • Tim-Philipp Müller
  • Vincent Penquerc'h
  • Wonchul Lee

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