[MPlayer-dev-eng] 2-pass encoding with vqscale=2 on first pass

Jan Knutar jknutar at nic.fi
Fri Sep 17 23:11:19 CEST 2004


On Friday 17 September 2004 23:43, Guillaume POIRIER wrote:
> Hi there,
> As you probably know, I'm working on an encoding option for lavc called
> "turbo" mode, which is supposed to boost encoding time while preserving
> quality as much as possible.
> While I've looked at libmpcodecs/ve_lavc.c which is the front-end of
> lavc for encoding, I saw how easy it could be to have fixed-quand  first
> pass automatically.
> From my experiments, and from what is written in
> DOCS/tech/encoding-tips.txt it looks like a good idea to do so.
> 
> ...So should it be made default?

Some people say that fixed-quant first pass is worse. Some say it's better.
Letting the user make the choice is probably best.




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