[gstreamer-bugs] [Bug 632861] [x264enc] really bad quality with tune=zerolatency
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Fri Oct 22 07:02:18 PDT 2010
https://bugzilla.gnome.org/show_bug.cgi?id=632861
GStreamer | gst-plugins-ugly | git
Robert Swain <robert.swain> changed:
What |Removed |Added
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CC| |robert.swain at gmail.com
--- Comment #7 from Robert Swain <robert.swain at gmail.com> 2010-10-22 14:02:14 UTC ---
Committed as ordered by Tim.
commit 6f2db739aed240d080b6a9cfe28ac1ec6d2c753c
Author: Robert Swain <robert.swain at collabora.co.uk>
Date: Fri Oct 22 11:29:55 2010 +0200
x264enc: Work around a rate control issue in libx264
When variable framerate is disabled in libx264 (which occurs when using
the zerolatency tuning), libx264 ignores timestamps but still uses the
timebase leading to messed up rate control with our nanosecond timebase.
We work around this issue by setting the timebase to the reciprocal of
the framerate and we validate that the framerate is suitable.
This has been fixed upstream in libx264 but there are non-fixed versions
in the wild so this workaround is still needed.
Fixes bug #632861
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