[FFmpeg-user] mpeg4 encoder using qscale to set open VBR seems broken?
Arne.Lie at sintef.no
Wed Dec 4 13:35:49 CET 2013
> "-flags mv4" sets the flags to exactly mv4; "-flags +mv4" adds the mv4 flag to
> the flags already present.
> Constant quantizer encoding is enabled by the qscale flag, which is
> automatically set by the -qscale option. Without the + in the "-flags"
> option, you are clearing that flag afterwards.
This explains everything: I was not aware of this kind of + sign usage. Perhaps this should have been documented in the help output?
More information about the ffmpeg-user