[XviD-devel] possible qpel direct chroma MV rounding bug
Ivan Kalvachev
ivan at cacad.com
Thu Jan 5 12:30:46 CET 2006
Pascal Massimino said:
>
> Hi Michael!
>
> On Tue, 2005-12-20 at 05:44, Michael Niedermayer wrote:
>> Hi
>>
>> after some heated flam .. ehh i mean disscussion about libavcodec ability
>> to decode xvid encoded files binary identically to xvid i found some
>> differences, when using qpel + b frames, one of these is caused by the
>> following code in xvid, which doesnt seem to match the mpeg4 spec but
>> its 5oclock in the morning so please forgive me if iam wrong
>
> Indeed, i think you're perfectly right (even at 5am;).
> The code doesn't follow the spec. Now, even if the fix
> is trivial, we'll have to think of something for the
> backward compatibility...
>
> later!
> Skal
I'm just curious have you checked if there is (not) similar bug in the encoder?
I'm sure you did but I just need confirmation.
More information about the XviD-devel
mailing list