[XviD-devel] some question about xvid and mpeg4

Marco Al xvid-devel@xvid.org
Fri, 24 Jan 2003 16:25:05 +0100


James Hauxwell wrote:

> changing macrobloc quant in darker or "flatter" area won't reduce
> filesize??
>
> Yes it will, as you produce more zero value coefficients, so the VLC
> does a better job = fewer bits.

But if you save less than 3 bits for a given MB you increase filesize of course,
which isnt all that unlikely for motion compensated blocks.

Marco