[FFmpeg-devel] [PATCH] Fix PSX MDEC decoder

[Vitor Sessak]

On 01/02/2011 04:43 AM, Michael Niedermayer wrote:
> On Sat, Jan 01, 2011 at 07:52:38PM +0100, Vitor Sessak wrote:
>> Hi,
>>
>> I saw in a blog post [1] that FFmpeg decodes Playstation 1 video files
>> with artifacts. It is indeed true, due to a wrong pixfmt (YUV/YUVJ) and
>> not imposing using DCT_SIMPLE, as is done in MPEG1. The attached patch
>> fixes it.
>>
>> For reference, I'm attaching a decoded frame with:
>>
>> 1- Current SVN with -idct mmx
>> 2- Current SVN with -idct simple
>> 3- Patched SVN
>> 4- Reference decoder output (i.e., PS1 image grab)
>>
>> -Vitor
>>
>> [1]
>> http://jpsxdec.blogspot.com/2010/09/psx-video-decoders-final-showdown.html
>>
>
>>   mdec.c |    4 +++-
>>   1 file changed, 3 insertions(+), 1 deletion(-)
>> 5c901ccdc3ae44b4a0fc43246c15ee462603a563  fix_mdec.diff
>
> if this fixes a bug, ok of course
> dont forget testing /updating fate

Applied. FATE didn't need to get updated since it uses already "-idct 
simple".

-Vitor