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Theora

Theora's own quality CRF goes from 1 to 10, with higher being better quality.

I haven't used Theora a lot so I can't really say much about it. Historically, it competes with x264 and Xvid.

ffmpeg

Use qscale to set CRF.

ffmpeg -i dvd_track.mpg -codec:v libtheora -qscale:v 7 video.ogv

HandBrake

HandBrake accepts quality CRF from 1 to 63, with default of 45.


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