[XviD-devel] XVID 1.0 + c't

[Christoph Lampert]

On Fri, 21 Mar 2003, Edouard Gomez wrote:

> suxen_drol (suxen_drol at hotmail.com) wrote:
> > iam not doin much this weekend, and plan to work on testing an
> > intergrating the latest version of ed's xvidrc tarball.
> 
> My last API is available at http://ed.gomez.free.fr/vrac/
> 
> module xvidrc
> 
> Btw I'm starting playing with p-domain rate control, at this moment i'm
> just checking if the Zhihai He paper is right. I have doubts on his
> formal/theoretical foundations but i think the method is right in
> practice.
> 
> I have some points to clarify tho:
>  - does the model need to be per frame type ? (the three parameters we
>  are supposed to update while encoding)
>  - Though the accuracy increases, what will be the use of this accuracy
>  boost ? better strict CBR... former CBR algorithm was lean and very
>  simple, and quite accurate. Better control in 2pass?... you see that if
>  this p-domain is useful, we have still to find out how to use it right.

I don't really see the advantage for, unless we are restricted to a very
narrow buffer. 
But maybe one day, rho-domain could help for a faster adaptive
quantization than counting bits (not "psychovisual" but rate-distorsion
optmized).

gruel