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

[Christoph Lampert]

On Sat, 17 Aug 2002, Michael Niedermayer wrote:
> > Peak error is difference between  original data and  DCT+iDCT
> > reconstructed? So there is no intermediate quantizer step?
> hmm, dct isnt specified in the mpeg4 std, so i would guess they mean 
> difference between the iDCT and the reference iDCT

Ah, okay. So the reference returns 1, the "fast" iDCT returns 0.
No problem to have all-zero output, unless peak error is supposed to be 0.

Christoph

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