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Release notes for GStreamer Ugly Plug-ins 0.10.16 "Because He Knows the Time is Short"

The GStreamer team is proud to announce a new release in the 0.10.x stable series of the GStreamer Ugly Plug-ins.

The 0.10.x series is a stable series targeted at 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.

"When you have to shoot, shoot. Don't talk."

There are times when the world needs a color between black and white. Quality code to match the good's, but two-timing, backstabbing and ready to sell your freedom down the river. These plug-ins might have a patent noose around their neck, or a lock-up license, or any other problem that makes you think twice about shipping them.

We don't call them ugly because we like them less. Does a mother love her son less because he's not as pretty as the other ones ? No - she commends him on his great personality. These plug-ins are the life of the party. And we'll still step in and set them straight if you report any unacceptable behaviour - because there are two kinds of people in the world, my friend: those with a rope around their neck and the people who do the cutting.

This module contains a set of plug-ins that have good quality and correct functionality, but distributing them might pose problems. The license on either the plug-ins or the supporting libraries might not be how we'd like. The code might be widely known to present patent problems. Distributors should check if they want/can ship these plug-ins.

Other modules containing plug-ins are:

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 less supported plug-ins that haven't passed the rigorous quality testing we expect

Features of this release

  • refactor x264enc to use current x264 API correctly, add new properties and new defaults
  • liboil is no longer required, but orc is now required
  • build: require orc >= 0.4.5, GLib >= 2.20, automake >= 1.10, autoconf >= 2.60; liboil is no longer required
  • asfdemux: fix playback of files or streams that are shorter than the advertised preroll value
  • asfdemux: fix sending eos event for chained asfs in pull mode (exotic)
  • asfdemux: fix playback of files or streams that advertise miniscule preroll values
  • lamemp3enc: implement latency query
  • rmdemux: fix playback of sipro audio streams
  • x264enc: refactor code in preparation for presets/tunings
  • x264enc: add "profile" property (and default to MAIN profile)
  • x264enc: improve defaults: medium speed/quality preset; auto mode for threads
  • x264enc: add "speed-preset", "tune" and "psy-tune" properties
  • x264enc: add "option-string" property to specify advanced parameters
  • x264enc: set time base if needed, fixes visual artifacts
  • x264enc: add "sliced-threads", "sync-lookahead", "intra-refresh", "mb-tree", and "rc-lookahead" properties
  • x264enc: fix compilation against ancient x264 versions (X264_BUILD <= 75)
  • x264enc: speed up first pass of multi-pass encoding (has no impact on quality)
  • x264enc: fix flushing of delayed frames with new default settings

Bugs fixed in this release

  • 599718 : [asf] support chained asfs
  • 600412 : [asfdemux] Wrong handling of downstream GstFlowReturn
  • 607798 : x264enc needs updating to support new features and use x264 correctly
  • 618896 : lamemp3enc doesn't implement latency query
  • 620007 : Gibberish sound when playing a certain RealMedia file of Sipro/ audio codec
  • 620344 : Update gst-plugins-ugly docs on website
  • 622407 : [asfdemux] doesn't detect some streams if preroll value is very small
  • 624786 : x264enc time base is wrong
  • 625557 : x264enc doesn't flush delayed frames properly
  • 626577 : [x264enc] regression: doesn't work with older versions of x264
  • 627946 : mp3parse misuses GST_FLOW_IS_FATAL, doesn't forward GST_FLOW_UNEXPECTED upstream


You can find source releases of gst-plugins-ugly in the gst-plugins-ugly 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-ugly 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
  • David Hoyt
  • David Schleef
  • Edward Hervey
  • Mark Nauwelaerts
  • Olivier Crête
  • Robert Swain
  • Sebastian Dröge
  • Stefan Kost
  • Thiago Santos
  • Tim-Philipp Müller
  • Tristan Matthews
  • Wim Taymans

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