[gstreamer-bugs] [Bug 621663] x264enc: support changing bitrate property on the fly

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Thu Nov 25 03:06:09 PST 2010


https://bugzilla.gnome.org/show_bug.cgi?id=621663
  GStreamer | gst-plugins-ugly | git

--- Comment #27 from Jason Garrett-Glaser <darkshikari at gmail.com> 2010-11-25 11:06:03 UTC ---
The overall bitrate is different because your video is short and the difference
in VBV states is sufficient to account for the difference.

A drop in bitrate hurts PSNR more than a rise in bitrate helps PSNR.  Thus,
artificially dropping bitrate for a part of the video (and boosting it for
another) will generally hurt overall PSNR.

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