[Ffmpeg-devel] [BUG] MPEG-4 file with artifacts

[Diego Biurrun]

On Mon, Jan 30, 2006 at 12:03:17PM +0100, Michael Niedermayer wrote:
> 
> On Mon, Jan 02, 2006 at 01:38:30PM +0100, Diego Biurrun wrote:
> > 
> > while reorganizing my samples collection, I stumbled across some samples
> > that fail to decode properly.  This one has MPEG-4 video that shows
> > heavy artifacting:
> > 
> > ftp://sandman.homedns.org/diego/ffmpeg/mpeg4_artifacts.mp4
> > ftp://sandman.homedns.org/diego/ffmpeg/mpeg4_artifacts_small.mp4
> > 
> > The first sample is 50MB, the second 1MB, but the small version already
> > shows the problem quite visibly.  ffplay fills the console with messages
> > like
> > 
> > [mpeg4 @ 0x10287df8]Error at MB: 672
> > [mpeg4 @ 0x10287df8]marker does not match f_code
> > [mpeg4 @ 0x10287df8]concealing 593 DC, 593 AC, 593 MV errors
> > [mpeg4 @ 0x10287df8]Error at MB: 672
> > [mpeg4 @ 0x10287df8]marker does not match f_code
> > [mpeg4 @ 0x10287df8]concealing 593 DC, 593 AC, 593 MV errors
> > [mpeg4 @ 0x10287df8]header damaged
> > [mpeg4 @ 0x10287df8]ac-tex damaged at 24 23
> > [mpeg4 @ 0x10287df8]Error at MB: 967
> > [mpeg4 @ 0x10287df8]concealing 315 DC, 315 AC, 315 MV errors
> > [mpeg4 @ 0x10287df8]header damaged
> > [mpeg4 @ 0x10287df8]header damaged
> > [mpeg4 @ 0x10287df8]ac-tex damaged at 3 5
> > 
> > Maybe the file is just damaged (beyond repair).  I'd appreciate if
> > somebody could confirm this.
> 
> is there any decoder / player / demuxer which can play this?

None that I have access to (no Windows here), so I guess it's safe to
say the file is simply utterly broken.  Case closed then, unless someone
can play this with WMP or whatever.

Diego