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Release notes for GStreamer Base Plugins 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 contains a set of reference plugins, base classes for other plugins, and helper libraries. It also includes essential elements such as audio and video format converters, and higher-level components like playbin, decodebin, encodebin, and discoverer. This module is kept up-to-date together with the core developments. Element writers should look at the elements in this module as a reference for their development. This module contains elements for, among others:

  • device plugins: x(v)imagesink, alsa, v4lsrc, cdparanoia
  • containers: ogg
  • codecs: vorbis, theora
  • text: textoverlay, subparse
  • sources: audiotestsrc, videotestsrc, giosrc
  • network: tcp
  • typefind functions
  • audio processing: audioconvert, adder, audiorate, audioresample, volume
  • visualisation: libvisual
  • video processing: videoconvert, videoscale
  • high-level components: playbin, uridecodebin, decodebin, encodebin, discoverer
  • libraries: app, audio, fft, pbutils, riff, rtp, rtsp, sdp, tag, video
Other modules containing plugins are:
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

  • 761514 : riff: remove limits for sample rate and channel count
  • 766419 : videotimecode: Added support for SMPTE time code metadata
  • 767816 : Comparison of constant 64 with expression of type 'GstVideoFormat' is always false in Mac OS X
  • 768495 : is out of date
  • 768525 : subparse: don't reset allowed tags
  • 768687 : Rework video orientation
  • 768718 : videoscale: fix leak in test
  • 768811 : decodebin3/playbin3: fix leaks
  • 768852 : appsink: add _try_pull_{sample,preroll} with timeout parameter
  • 768990 : audioclock: use GST_STIME_FORMAT for the correct argument
  • 769080 : decodebin3: fix collection refcounting
  • 769270 : decodebin3/playbin3: fix ref handling
  • 769298 : decodebin3: handle full removal of streams
  • 769299 : ogg: check return values in gst_ogg_parse_new_stream
  • 769303 : pbutils: Add more h264 scalable profiles
  • 769624 : videorate: Does not support reverse playback
  • 770053 : parsebin: sometimes sets global tags to stream


You can find source releases of gst-plugins-base in the gst-plugins-base 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 gst-plugins-base 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

  • Arun Raghavan
  • Carlos Rafael Giani
  • Duncan Palmer
  • Edward Hervey
  • Guillaume Desmottes
  • Jan Schmidt
  • Joan Pau Beltran
  • Josep Torra
  • Luis de Bethencourt
  • Matej Knopp
  • Michael Olbrich
  • Nirbheek Chauhan
  • Piotr Drąg
  • Sebastian Dröge
  • Sergio Torres Soldado
  • Seungha Yang
  • Sreerenj Balachandran
  • Stefan Sauer
  • Thibault Saunier
  • Thijs Vermeir
  • Tim-Philipp Müller
  • Vincent Penquerc'h
  • Vivia Nikolaidou
  • Víctor Manuel Jáquez Leal
  • Wim Taymans
  • Xabier Rodriguez Calvar

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