[MEncoder-users] Strange things when encoding with libx264: B frames, threads

[Grozdan]

2009/10/11 Etienne Buira <etienne.buira.lists at free.fr>:
> Hello.
>
> I have troubles when encoding with libx264.
>
> I use mencoder SVN-r29766, and libx264 git
> 39f6499e3abcf473bdcbade38aba9a7490470e6a (both updated at the same
> time).
>
> When using a command line not specifying "bframes=0" in -x264encopts, B
> frames are generated, despite the man page says that default bframes
> value is 0.
> However, if I specify "bframes=0", no bframes are generated. What's
> wrong? My cmdline? man page? bug?
>
> Also, without specifying "threads=1" (like manpage says it is the
> default), mencoder process uses more than 300% CPU (quad core). I have
> the same questions about this issue.
>
> My typical command line is 'mencoder -o dest.avi -hr-edl-seek -edl
> edl-file -oac faac -faacopts br=128 -ovc x264 -x264encopts
> frameref=7:direct_pred=auto:partitions=all:8x8dct:me=umh:subq=7:mixed_refs:trellis=2:crf=21
> source.ts'

Man page is highly outdated. Bframes are on by default if you don't
specify anything. Threads is set to auto which will use all available
cores

>
> Regards.
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>



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