[MPlayer-users] Is more than 3 pass really beneficial or am I just paranoid about quality?

[Giacomo Comes]

On Wed, Apr 20, 2005 at 05:12:20PM +0200, Nico Sabbi wrote:
> VJ wrote:
> 
> >Thanks Nico. It means I am just burning my PC's precisous T-cycles. Is
> >what you said for 3 passes applicable to 4-6 passes too?
> >
> >Regards from
> >VJ
> > 
> >
> 
> obiously yes, but I'll repeat: AFAIK

My experience is that for mpeg1 and mpeg2
You need only 1 pass.
I use 3 different set of libavcodec options
and the PSNR of 2 pass encoding is always worst than 1 pass.
For 3 pass, with some options, 3 pass is better than 1 pass.

The story is different for mpeg4. Usually
2 pass is bettern than 1 pass
and 3 pass is better than 2 pass.
4 pass is not that much different from 3 pass.

Giacomo