[Ffmpeg-devel] Re: bug - movenc.c: Issues with multi-slice H.264 video

Baptiste Coudurier baptiste.coudurier
Mon May 15 19:12:31 CEST 2006


Tyler Loch wrote:
> If ffmpeg is run with multiple threads (-threads n), it will create H.264 video
> with multiple slices - one per thread. This is good.
> When muxed into a .mov or .mp4 wrapper, the multi-slice video will crash
> QuickTime Player (this is bad). The first frame will be displayed with the first
> half (if two slices were used) intact, and the second half as "nothing" grey.
> If x264.c is forced to use one thread (hard-coded variable or no "-threads"
> flag), the video plays without incident. Also, if another program such as
> mp4creator is used to mux a raw, multi-slice .h264 file to .mp4, that resulting
> file will also play without incident.
> Here are two samples. One multi-slice, one not:
> http://www.isquint.org/onethread.mp4
> http://www.isquint.org/twothreads.mp4
> Thanks.

Should be fixed in cvs. Can you please try ?

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