[XviD-devel] Other clip with Bframes, quality vs size

Christoph Lampert xvid-devel@xvid.org
Sun, 18 Aug 2002 18:07:30 +0200 (CEST)


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Hi,

this is another clip. 

Results are compeletely different:
Any combination of maX_bframes and bquant_ratio performs better than
max_bframes=0 (red), except for bquant_ratio=80, which was expected
and bquant_ratio=100 which is roughly the same as non-Bframes.

It might be that max_frames=3 (purple) is even the best... 

However, note that you can't compare the numbers directly. For the first
clip, we had PSNR=43 at bpp=0.2, for the second one it's PSNR=35!

Anyway, that's one reason why I would like to see a "dynamic" mode for
B-frames one day...

Christoph

-- 
Christoph H. Lampert chl@math,uni-bonn,de | Diese Signature wurde maschi-     
Beringstr. 6, Raum 14 Tel. (0228) 73-2948 | nell erstellt und bedarf
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