[MPlayer-users] x264 playback problem / strage artifacts

[MuldeR]

Guillaume POIRIER wrote:
> 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
>
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>
>   
Okay. I've now uploaded the sample to 
"ftp://www.mplayerhq.hu/MPlayer/incoming". File name is 
"borked-x264-sample.zip". I don't know where to report bugs of lavc. 
Maybe one of the MPlayer developers can report the problem, so it wil be 
fixed ASAP...

Thanks for the info, Guillaume. I've downloaded an older build and H.264 
playback seems to be fine now.

MuldeR