[XviD-devel] [In progress] devapi4 -- mpeg matrices

[skal]

	Re,

On Fri, 2003-11-28 at 11:22, skal wrote:

> 	Partially, since it uses divide-by-multiply
> 	[with variable fixed-point precision] instead of
> 	the exact divide. Also: the bias are not the same
> 	[Q/2 vs.(3*Q+2)/4, for intra]. What's the file size
> 	difference? 

	i confirm: i simply forgot to add this usual poor man's
	RD-opt. MPEG4's intra bias should be:
		bias = (3*quant*intra_matrix[i]+2)>>2
	Nice fishing! :) Thanks

	bye!
Skal