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

[Christoph Lampert <chl@xxxxxxxxxxxxxxxx>]

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

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Bframes2-quality-vs-size.png
Description: PNG image