[XviD-devel] zig-zag

[Michael Niedermayer]

Hi

On Wednesday 12 March 2003 11:27, Christoph Lampert wrote:
[...]
> After running several sequences with and without Qpel/Bframes
> there is a big peak of non-zero coefficients at coefficient
> 56 = 7*8+0 (more than 50% of chroma blocks are nonzero there!). There are
> also peaks at 1 and the other multiples of 8 (40 is strong, too) which
> seem rather logical if chroma changes more vertically than horizontally,
> but DCT[56] is by far the strongest and I have no idea why.
it could be because, chroma isnt deinterlaced correctly ...

[...]

Michael