[XviD-devel] Improving H263 quantization

[Adept]

Hi ALL!

Let's speak about H263 quantization. Why rounding to down?
IMHO, rounding to the nearest is better. Because of 
reducing
of quantization error two times.

For example. Required to change 4 identical lines in 
quant_h263_intra_c
and quant_h263_inter_c from

acLevel = (acLevel * mult) >> SCALEBITS;

to

acLevel = (acLevel * mult + 32768) >> SCALEBITS;

Because 32768=2^(SCALEBITS-1).

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