[FFmpeg-devel] [PATCH] improve initial states in ffv1 2 pass

Michael Niedermayer michaelni
Thu Oct 28 13:32:54 CEST 2010

On Wed, Oct 27, 2010 at 07:25:34PM -0700, Jason Garrett-Glaser wrote:
> On Wed, Oct 27, 2010 at 7:02 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
> > Hi
> >
> > Improvments from this arent huge but it doesnt cost anything except a bit of
> > time during init of the 2nd pass.
> > iam planing to apply this soon
> Can you say how large the improvements are?  I find it rather annoying
> when changes to encoders are committed that supposedly improve quality
> or compression, but the patches don't say how much they actually
> help...

sorry, ive not mentioned my values because i had other changes locally that
could have caused them to slightly differ from svn.
svn vs patch based values below

18637016 adv-pass2-g300.avi
18638806 adv-pass1-g300.avi
18640534 ref-pass2-g300.avi
18918214 adv-pass2-g1.avi
18982048 ref-pass2-g1.avi
21516230 adv-pass1-g1.avi

ref is svn (version=2 context=coder=1), adv is the patch, its foreman and
g is the gop size


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Breaking DRM is a little like attempting to break through a door even
though the window is wide open and the only thing in the house is a bunch
of things you dont want and which you would get tomorrow for free anyway
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