[FFmpeg-user] crf mode in libvpx

Carl Eugen Hoyos cehoyos at ag.or.at
Fri Feb 3 10:55:34 CET 2012

Boštjan Strojan <bostjan.strojan <at> gmail.com> writes:

> a. Playing around with freshly compiled ffmpeg + libvpx, but can't
> seem to figure out what would be the valid "quality based" encoding
> switch for libvpx? (crf/cq mode or however that is called)

What did you try? Doesn't -qscale / -vq work?
(Command line and complete, uncut output missing.)

> b. Is internal vorbis encoder usefull?

There is no general agreement on this, but some famous large 
internet company is said to use it.

> (If yes, same question - how to enable quality based encoding?)

-aq is expected to work but takes unexpected (large) values iirc.

Carl Eugen

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