Re: Re: Space saving tips

Le 29 avr. 06 à 00:03, T a écrit :

> On Fri, 28 Apr 2006 11:27:23 +0200, herve.flores wrote:
>
> > > > You force the output to be CBR at thrice the input bit rate. Seems
> > > > normal that you get a file thrice as big.
> > use VBR and DO NOT REDUCE THE BITRATE (...do you want some "buffer
> > underflow"? ;-))))
> > -b 9000 -maxrate 9000 -qmin 2 -qmax 20 -bf 2
> > (and not just -b 4000 !)
>
> Thanks Darren & Hervé for your kind explanation.
>
> Summary for now:
>
> - Darren suggest to lower -b but Hervé said it will cause buffer
>   underflow.
> - Hervé suggested to use VBR, which is almost the same as what I used
>  (-b 3600 -maxrate 4500 -sameq), but I was told that it is CBR.
>
> hmm.., there seems to be still some confusions going on.
>
> tong

VBR
-qmin 2 -qmax 20
(adaptative quantization)

and
-bf 2 to reduce the output size
(B frames are more little than P frames )

play with qmax, do not low bitrate

bye

Hervé