[gstreamer-bugs] [Bug 619290] [vp8] add mode property to switch between CBR/VBR
bugzilla at gnome.org
Fri May 21 07:39:25 PDT 2010
GStreamer | gst-plugins-bad | git
--- Comment #2 from Philip Jägenstedt <philipj at opera.com> 2010-05-21 14:39:20 UTC ---
It's possible that tweaking the quantizers even when using a target bitrate has
useful results, but that would require lots of testing to find reasonable
defaults. If such defaults could be found, then arguably they should be in
libvpx itself, so that it could benefit everyone.
About CBR/VBR, I think that perhaps it should be made to include 2-pass. 2-pass
CBR makes no sense. Some other encoder elements seem to have a setting which
goes something like this.
0. 1-pass CBR
2. 1-pass VBR
3. 2-pass VBR, pass 1
4. 2-pass VBR, pass 2
Perhaps that's what we should do. 2-pass would seem to be a pain to integrate
into something like Transmageddon though, as all encoder elements have
different ways of setting pass 1/2 and getting the log/stats file in/out.
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