[FFmpeg-devel] Does any one have some material on on2 VP7 or VP8?

[zhihang wang]

On Sun, Jun 7, 2009 at 2:18 PM, Kostya <kostya.shishkov at gmail.com> wrote:

> On Sat, Jun 06, 2009 at 02:44:23PM -0400, Jason Garrett-Glaser wrote:
> > > Why? On2 site features a nice demo on how VP8 performs (and makes
> > > x264-encoded source look more like a bad h.263 encoder instead).
> > > Fortunately, it's not completed and released yet.
> >
> > Yes, there's a demo--but it doesn't actually exist until there is a
> > real product with a real encoder and a real decoder.
> >
> > I'm curious how you would intend to reverse-engineer a format without
> > having any samples of it or any software that decodes it ;)
>
> An experienced reverse-engineer will gladly accept that challenge.
> In this case it's easy - randomly hack VP6 codec and declare it to be
> able to play VP8. I'm pretty sure On2 did the same.
>
I found that the golden frame technology is adopted in VP8.

>
> Also I predict that RV5 and RV6 will be based on early drafts of H.265
> and will have 1/5pel and 1/6pel MC correspondingly.
>
> > Dark Shikari
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-- 
Best Regards
zhihang wang