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

[Erik Slagter]

On Sun, 2005-06-19 at 15:08 +0200, M?ns Rullg?rd wrote:
> >> > On Sun, 2005-06-19 at 13:33 +0200, M?ns Rullg?rd wrote:
> >> >> > Can you tell me what command line options of x264 _exactly_ correspond
> >> >> > to the ones I used with ffmpeg?
> >> >> 
> >> >> x264 -b 2 -I 25 -q 27 --sar 16:15 --threads 2
> >> >
> >> > Is there an easier way to feed my vob into x264 than to completely
> >> > decode it? No, of course I don't have avi support (iirc only on
> >> > win)... :-(
> >> 
> >> ffmpeg -i foo.vob -f rawvideo - | x264 ...
> >
> > The above with mp4 output file gives exacly the same problem.
> >
> > The above with h264 es output file, I cannot test, because mplayer
> > chokes on it:
> 
> Try it with ffplay.

Thx, that worked. Well... it shows a picture with the same errors as
mplayer on the mp4 stream. Output:

[h264 @ 0x4d4fd0b0]concealing 792 DC, 792 AC, 792 MV errors
[h264 @ 0x4d4fd0b0]error while decoding MB 2 18
[h264 @ 0x4d4fd0b0]concealing 792 DC, 792 AC, 792 MV errors
[h264 @ 0x4d4fd0b0]concealing 792 DC, 792 AC, 792 MV errors
[h264 @ 0x4d4fd0b0]error while decoding MB 2 18
[h264 @ 0x4d4fd0b0]concealing 792 DC, 792 AC, 792 MV errors

If you want to see for yourself:

http://erik.slagter.name/pub test.vob (33M) test.h264 (19M)