[MEncoder-users] h264 3-pass mode

GeBu gebu at seznam.cz
Wed Jan 24 14:06:34 CET 2007


Hi we analyze your suggestions (thanks very much) and we have some 
questions:
1) Why do not encode sound?
2) Why there is no bitrate in pass=1?
3) Why there is no qp_min and qp_max in pass=1 (only qp_constant)?
4) fullinter is not in man.
Jirka (GeBu)
>> : mencoder test.avi -ovc x64 -x264encopts
> pass=1:qp_constant=15:fullinter:cabac:deblock:subq=4:keyint=300: \
> scenecut=45:frameref=8:deblockalpha=1:deblockbeta=0 \
> -nosound -of avi -o /dev/null
>> : mencoder test.avi -ovc x64 -x264encopts
> pass=3:bitrate=1200:qp_min=15:qp_max=51:qcomp=0.8:rc_buffer_size=700:
> \
> fullinter:cabac:deblock:subq=4:keyint=300:scenecut=45:frameref=8: \
> deblockalpha=1:deblockbeta=0  -nosound -of avi -o threepass.avi
>> : mencoder test.avi -ovc x64 -x264encopts
> pass=3:bitrate=1200:qp_min=15:qp_max=51:qcomp=0.8:rc_buffer_size=700:
> \
> fullinter:cabac:deblock:subq=4:keyint=300:scenecut=45:frameref=8: \
> deblockalpha=1:deblockbeta=0  -nosound -of avi -o threepass.avi



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