[XviD-devel] re: BITS

syskin at ihug.com.au syskin at ihug.com.au
Mon May 12 20:52:23 CEST 2003


Hi,

gruel wrote
> Maybe one shouldn't just compare BITS, but use the usual lagrangian R-D

> value = lambda*bits + distorsion

> where lambda = 0.85 * quant*quant (for MSE distorsion measure)
> or some similar value (e.g. 1 to 1.15 was better in my tests). 

That would probably be much better :) I wonder how slow would it be... I'll do 
that.

> But my real question is: Why was encoding _faster_ when BITS was activated
> for halfpelrefine. I can imagine BITS for whole search being faster, if
> the search terminates much too early. But refinement is always done. How
> can a slower refinement step speed up the encoding? 

I haven't even noticed that... so yes, it's definitely buggy.

Radek




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