[MPlayer-users] Ripped DVD got wrong aspect ratio?

[Markus Liebl]

On Fri, 08 Nov 2002 15:13:23 +0000
Dominik Szczerba <domi at vision.ee.ethz.ch> wrote:

> > - you see no visual difference between them (for humans)
> > - quant 1 frames are much bigger than quant 2 frames
> >
> >-> if you use quant 1, you lose quality
> >  
> >
> but how, if your bitrate is specified? you mean it takes bytes off other
> frames that may better use it, right?
yes. 

e.g. 3 frames with a specified bitrate
 
with vqmin=1 you get following quants for the 3 frames: 1 4 4

with vqmin=2 you get : 2 3 3

If you compare the two movies, the second looks better, because:

1. frame -> quant 1 vs. quant 2 -> equal quality
2./3. frame -> quant 3 vs. quant 4 -> there is a visual diffrence, q3
looks better than q4

any questions?

> and please comment on vqmax as well...
use the default (15)

Bye, 
Markus

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            Secret hacker rule #11: hackers read manuals.