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Release notes for GStreamer 1.3.1

The GStreamer team is pleased to announce the first release of the unstable 1.3 release series. The 1.3 release series is adding new features on top of the 1.0 and 1.2 series and is part of the API and ABI-stable 1.x release series of the GStreamer multimedia framework. The unstable 1.3 release series will lead to the stable 1.4 release series in the next weeks, and newly added API can still change until that point.

Binaries for Android, iOS, Mac OS X and Windows will be provided separately during the unstable 1.3 release series.

The versioning scheme that is used in general is that 1.x.y is API and ABI backwards compatible with previous 1.x.y releases. If x is an even number it is a stable release series and all releases in this series will only contain important bugfixes, e.g. the 1.0 series with 1.0.7. If x is odd it is a development release series that will lead to the next stable release series 1.x+1 and contains new features and bigger changes. During the development release series, new API can still change.

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

  • 729440 : docs: DeviceMonitor missing in generated doc
  • 710621 : utils: Uses non-literal as format string
  • 726423 : playbin/decodebin: aggregate buffering messages
  • 726425 : Add new API to notify minimum buffering needed downstream
  • 679115 : Windows: Make the GStreamer DLLs/data relocatable
  • 721655 : basesrc activation order logs error in some cases where it should not
  • 702842 : basesrc: operate in time mode if do-timestamp is true
  • 705189 : debug-dot-dump: Add the presence/state of a GstTask
  • 708870 : " generic " is spelled wrong in GstBaseSrc's documentation
  • 709253 : caps: subset checks fail with duplicated values in lists
  • 709262 : GstStructure's documentation incorrectly warns that empty strings don't work in any GstStructure
  • 709831 : filesrc: Improve unit test coverage by setting property in the " wrong " state...
  • 710034 : parse: bison finds conflicts / ambiguities
  • 710342 : docs: various constructors are annotated as " transfer full " , but return floating references
  • 710442 : netclientclock: constify name parameter for gst_net_client_clock_new()
  • 710758 : gst-launch: assert if we can't get gst sample
  • 710876 : pwg: rename the " samplerate " variable to make example code compilable
  • 711138 : iterator: Don't hold mutex while calling filter functions of recursive filter iterators
  • 711269 : systemclock: Add method to set the default system clock
  • 711488 : gst-uninstalled: export gst-plugins-gl DYLD_LIBRARY_PATH
  • 712385 : netclock: added new round-trip limit property
  • 712679 : parse: prototype-mismatch
  • 719614 : docs: add missing docs and fix errors
  • 720029 : docs/etc: Fix typos
  • 720036 : info: return existing debug category when registering a category twice (regression)
  • 720100 : parse: redefinition of malloc - old grammar.y bugs crawl out of the woodwork
  • 720199 : basesrc: DTS becomes 0 in gst_base_src_do_sync() for first buffer
  • 720316 : parse: Fails to compile on CentOS due to redefinition of yyscan_t
  • 720337 : gstreamer-uninstalled: add gstreamer-vaapi to GST_PLUGIN_PATH
  • 721076 : appsink documentation missing gst_sample_unref
  • 721096 : pad: Pad BLOCKING probe callback issues
  • 722289 : capsfilter: Sending CAPS event downstream in pull mode
  • 722697 : pad: Setting pad offsets breaks the running time in QoS and other events
  • 722791 : basesrc: not respecting seqnum of eos from send_event
  • 722891 : multiqueue: Growing of multiqueue does not work correctly if all except one pad are not linked
  • 723229 : gst-uninstalled call print as function
  • 723236 : caps: fix gst_caps_get_features return
  • 723266 : outputselector: respect the 'negotiation-mode' property
  • 723997 : gstreamer/docs: add missing seqnum file for distribution
  • 724045 : gst-inspect: Compile error at gst-inspect.c:514:15 since 53d8460bfd
  • 724571 : In collectpads, the collected function is sometimes called incorrectly.
  • 724757 : basesrc: Ignores seek made when the last buffer is pushed
  • 725476 : adapter: Added interfaces for language bindings
  • 725478 : gstreamer: Ignore gcov intermediate files
  • 725862 : buffer: invert BUFFER_FLAG_TAG_MEMORY ?
  • 725917 : multiqueue: do not reset last push result when pushing events
  • 726461 : collectpads: should send the seek events to the peers of its sink pads, as they can be flushing
  • 727484 : gstpad: Don't print name of an unowned event
  • 727701 : debugutils: Handle caps field values being NULL
  • 727903 : structure: handle 0 denominator
  • 727945 : funnel: element doesn't forward eos stream
  • 727949 : bin: Make sure to post EOS message always after reaching the PLAYING state
  • 729335 : basesink: Should render buffers that arrived on time even if prepare() took some time
  • 727109 : buffer: Should not set TAG_MEMORY if memory has not been replaced


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

  • Alessandro Decina
  • Antoine Jacoutot
  • Antonio Ospite
  • Arnaud Vrac
  • Brendan Long
  • Carlos Rafael Giani
  • Chun-wei Fan
  • David Svensson Fors
  • Edward Hervey
  • Erik Andresen
  • Fabian Kirsch
  • Felipe Ortiz
  • George Kiagiadakis
  • Haakon Sporsheim
  • Havard Graff
  • Jan Alexander Steffens (heftig)
  • Jan Schmidt
  • Jose Antonio Santos Cadenas
  • Linus Svensson
  • Luis de Bethencourt
  • Mark Nauwelaerts
  • Mathieu Duponchelle
  • Matthieu Bouron
  • Nicola Murino
  • Nicolas Dufresne
  • Olivier Crête
  • Pedro Côrte-Real
  • Per x Johansson
  • Philip Withnall
  • Philippe Normand
  • Reynaldo H. Verdejo Pinochet
  • Sebastian Dröge
  • Sebastian Rasmussen
  • Showayb Zahda
  • Srimanta Panda
  • Stefan Sauer
  • Stewart Brodie
  • Stian Selnes
  • Thiago Santos
  • Thibault Saunier
  • Tim-Philipp Müller
  • Todd Agulnick
  • Vincent Penquerc'h
  • Víctor Manuel Jáquez Leal
  • William Jon McCann
  • William Manley
  • Wim Taymans
  • Xavi Artigas
  • YanpingZhang

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