[XviD-devel] HUGE ME regressions between beta1 and beta2

[Radek Czyz]

Hi everyone,

Apparently our testing community sucks ;))

There was a HUGE quality and speed regression between beta1 and beta2. I 
narrowed it down to SAD-based ME. The major changes in that time was 
Isibaar's new lambda code, but apparently we have hardly any logs what 
happened exactly (well, we've got cvs, I'll check that).

For fast settings (no VHQ, no trellis, no chromaME, defaults otherwise):

Beta1's ME:  time 1:19 filesize 26.2MB psnr 41.19dB
Current ME:  time 1:24 filesize 28.8MB psnr 41.14dB


What the heck happened? ;_;

I suggest we postpone 1.1final until we figure this out - looks like all 
speed improvements over 1.0 are gone (10% slower at these settings, 5% 
slower at defaults), and 10% more filesize for *lower* quality is... bad.

Radek