Re[2]: [XviD-devel] xvid + bframes and mplayer/ffmpeg decoding

[Christoph Lampert]

On Sat, 17 Aug 2002, Marco Al wrote:

> Christoph Lampert wrote:
> 
> > Still that doesn't solve any of the iDCT "problems". Would it be much
> work
> > to either adapt iDCT  that nonzero->zero is not possible anymore or
> > to detect if the output is all zero?
> 
> I understand why this is inefficient, but how would this cause
> artifacts?

I explained it two days ago in another mail. For a different decoder 
the result might be non-zero, and when such a block is decoded several
times in a raw, the difference between the encoders internal image and the
decoders image grows. 

Christoph

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