[MPlayer-users] 2-pass HQ encoding with libavcodec
Sasi Peter
sape at iq.rulez.org
Fri Mar 29 12:04:02 CET 2002
On Fri, 29 Mar 2002, Louis Tsui wrote:
> > anyway it seems that 2-pass doesn't help so much, it's very good even at
> > 1-pass encoding, just set vratetol to something bigger, good value was 40000
> > for me.
Then I think the secont pass should use more info from the first pass to
optimize the bitrate distribution across the film. A friend of mine
just did a comparision between 1 and 2 pass encoding, and the difference
in action scenes was really amazing. It might also be the case, that the
film you are testing with is quite a static one.
He used Episode one, and the race did make a real difference: 1 pass did
not have enough bitrate left for a long action secne like that while 2
pass encoding had the spares to make the previous blockiness go away from
that part.
Hope this did help in improving the Best player on Earth (R) :)
cheers,
--
SaPE - Peter, Sasi - mailto:sape at sch.hu - http://sape.iq.rulez.org/
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