[Ffmpeg-devel] VP3 decoding issue

[Derk-Jan Hartman]

On 26-okt-2005, at 14:08, Michael Niedermayer wrote:
> On Tue, Oct 25, 2005 at 04:24:08PM -0600, Mike Melanson wrote:
>> Derk-Jan Hartman wrote:
>>> On 12-okt-2005, at 21:52, matthieu castet wrote:
>>>> Derk-Jan Hartman wrote:
>>>>> Apparently a while ago VP3 decoding stopped working in VLC and   
>>>>> ffmpeg.
>>>>> http://sidekick.student.utwente.nl/videolan/VP3-Artifact.mov
>>>
>>> All my VP3 NSV streams that i tested are broken, and I traced the  
>>> bug
>>> to vp3.c 1.51 -> 1.52
>>>
>>> revision 1.52
>>> date: 2005/05/17 23:39:23;  author: melanson;  state: Exp;   
>>> lines:  +45 -11
>>> use VLCs for in place of get_fragment_run_length(), get_mode_code 
>>> (), and
>>> get_motion_vector_vlc()
>>>
>>> Something there broke vp3 on MacOS X PPC.
>>> Anyone could help me getting any further from this point?
>>
>>     I made those changes (as the CVS notes). I remember validating  
>> the
>> changes extensively. Is it possible that the PPC's VLC readers are
>> messed up? Some weird optimizations that are not returning the  
>> correct
>> numbers?
>
> maybe compare the output when TRACE is defined on PPC and X86
> note, TRACE should output ALOT of detail about what the the  
> bitstream reader
> reads

Ok, I'm willing to build a TRACE of the PPC version of this movie.
who will do the X86 version?

DJ