open source multimedia framework

GStreamer Conference 2023

25-26 September 2023 · A Coruña, Spain

Registration is open · Lightning Talks can still be submitted · Join us!
Annual Conference
Planet (Blogs)
Security Center
Mailing Lists
File a Bug
@gstreamer on Twitter
@gstreamer on Mastodon
#gstreamer on Matrix

Release notes for GStreamer 0.9.4 "Tyrannosaurus Rex"

The GStreamer team is petrified to announce a new release in the 0.9.x development series of the core of the GStreamer streaming media framework.

The 0.9.x series is a development series and not recommended for end users. It is not API or ABI compatible with the stable 0.8.x series. It is, however, parallel installable with the 0.8.x series.

The main focus of the 0.9 series is to make GStreamer threadsafe.

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

contains a basic set of well-supported plug-ins
contains a set of well-supported plug-ins under our preferred license
contains a set of well-supported plug-ins, but might pose problems for distributors
contains a set of less supported plug-ins that haven't passed the rigorous quality testing we expect

Features of this release

  • Parallel installability with 0.8.x series
  • Threadsafe design and API
  • state lock redefined
  • Extensive documentation updates
  • BaseTransform reworked
  • Bus reworked; signal API added

Bugs fixed in this release

  • 111146 : new GstThread fails on pipeline with errors
  • 169772 : [PATCH] GOption command-line parsing
  • 170777 : use GST_TYPE_DATE for GST_TAG_DATE
  • 315050 : [API] consider using GstClockTime instead of GTimeVal in ...
  • 315126 : filesrc + forced caps should be possible
  • 315383 : gst-launch shouldn't run broken pipelines
  • 317041 : GstObject flags should be made real flags
  • 318447 : gst_bin_iterate_sorted: Invalid call to gst_iterator_new


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.


At this point, ports of existing applications to 0.9 are still experimental. A patch for Totem is maintained at A patch for Rhythmbox is maintained at Jamboree has a branch with the tag "jamboree-gst-0.9" that works against GStreamer 0.9. Flumotion has been mostly ported to 0.9 as well.

Contributors to this release

  • Andy Wingo
  • Edward Hervey
  • Johan Dahlin
  • Josef Zlomek
  • Julien Moutte
  • Michael Smith
  • Philippe Khalaf
  • Stefan Kost
  • Thomas Vander Stichele
  • Tim-Philipp Müller
  • Wim Taymans

Report a problem on this page.