[XviD-devel] mpeg_quant

pete pross at xvid.org
Tue Nov 29 09:08:15 CET 2005


hi,

[cleaning out my draft mbox...]

On Sun, 2 Jan 2005 16:03:00 +0100 Christoph Nägeli <chn at kbw.ch> wrote:
> I want to create some altivec routines for mpeg quantization.

great.

> Can anyone tell me how many bits I need to process mpeg quantization?
> Is 16-Bit Arithmetic enough or do I need 32-Bit?

16-bits is insufficient for mpeg quantization when using large
quantizers. i can't recall exactly what constitues large, but it 
is alteast q=10.

cheers,
-- pete



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