[MPlayer-users] x264 playback problem / strage artifacts

[Guillaume POIRIER]

Hi,

On 3/25/06, MuldeR <mulder2 at gmx.de> wrote:
> Sorry, wrong subject *shame on me*
>
> -------- Original Message --------
>
> Hi,
>
> I've just encoded a DVD to x264 using MEncoder (latest build by Celtic
> Druid, build for AthlonXP, CVS-060323). So far everything worked fine.
> BUT: I've got some problems on playing that file! When I play the file
> in MPlayer there are some strange artifacts. The following screenshot
> shows the problem. Maybe on the screenshot it's not as clear as you see
> in "real" playback, but there are some big blocks that should not be
> there! And parts of the image seems to be shiftet! Howere only a few
> frames seem to be affected. Let's say a few frames every 20 seconds...
>
> Look for the blocks in the hair:
> http://mulder.dummwiedeutsch.de/temp/borked.png
>
> Look at the border of the hat:
> http://mulder.dummwiedeutsch.de/temp/borked2.png
>
> If I play the same file in Media Player Classic with CoreAVCDecoder
> everything works 100% fine and there are no artifacts at all. Same for
> searching for broken frames in VirtualDub via ffdshow-decoder: There are
> none! But again: If I play the file in MPlayer there are those artifacts
> and thats extremely nasty
>
> Any ideas? Thanks....

I've seen such artifacts myself too. Builds from less than one week
ago are fine. I suspect the problem comes from one of the optimization
patch that were committed to lavc.
I think you'd be better of reporting this problem to ffmpeg mailing
list, as that's the library that MPlayer uses to decode H.264 files.

Guillaume
--
I am disillusioned enough to know that no man's opinion on any subject
is worth a damn unless backed up with enough genuine information to
make him really know what he's talking about.

-- H. P. Lovecraft (about the flamewars on FFmpeg and MPlayer-dev mailing lists)
http://www.brainyquote.com/quotes/quotes/h/hplovecr278144.html