[x264-devel] Re: no gain in 2PASS for very low bitrates

[Guillaume POIRIER]

Hi,

On 12/22/05, shauli rozen <shauli.rozen at gmail.com> wrote:

> >How many frames? 2pass doesn't do much on short videos, other than giving
> >more accurate bitrate. It only matters when there's many scenes of varying
> >complexity.

> the movie is 300 frames long , maybe that is not big enough for the 2PASS
> to take effect?

Yes, that's indeed too short. I couldn't tell you precisely around how
many frames 2pass makes a difference (as Loren said, it depends on how
many different scenes you have). It's probably safe to try with
several thousands frames (for instance 5min = 5*60*25 = 7500 frames)

Guillaume
--
Life is pleasant. Death is peaceful. It's the transition that's troublesome.
    Isaac Asimov (1920 - 1992)

MPlayer's doc is offline. Find some fresh one here:
http://tuxrip.free.fr//MPlayer-DOCS-HTML/en/
http://tuxrip.free.fr//MPlayer-DOCS-HTML/fr/

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