[Ffmpeg-devel] Bug in multithreaded h/x264 encoding

Måns Rullgård mru
Sun Jun 19 12:12:16 CEST 2005

Erik Slagter <erik at slagter.name> writes:

> This doesn't work when I specify -threads 2 as well, without it it's
> fine:
> ffmpeg -y -i input.vob -aspect 4:3 -g 25 -qscale 6 -bf 2 -coder 1 \
>  -ab 64 -async 1 -acodec aac -vcodec h264 -f mp4 output.mp4
> Large parts of the image are completly mangled all of the time. I guess
> it can be reproduced with any input.

That's a fairly long command line.  Does the bug still show if you
simplify it a bit, such as disable B frames?  Does the x264 command
line interface work?

M?ns Rullg?rd
mru at inprovide.com

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