[XviD-devel] GMC

[Christoph Lampert]

Hi sysKin,

I wasn't around over the weekend, but I'll have a look at your code 
later today. Thanks for the work... 

gruel


On Mon, 11 Nov 2002, Radek 'sysKin' Czyz wrote:
> Hi everyone,
> 
> Not much happening here these days, I see.
> I decided to send you my GME code, which has been here on my HD for a
> longer time. It's not very effective, but better then cvs's (and
> slower, too).
> However, the more important thing about it is that it's not
> ffdshow/divx5 compatible. This is not my fault, XviD doesn't decode
> divx5's GMC correctly either. The error is quite subtle, and can only
> be seen in a longer (10 seconds would be good) scene with clean
> camera panning.
> Colors get wrong. Very slowly, but after 10 seconds it's quite
> visible.
> 
> As for GMC itself, it's only useful for low bitrates... Sure it does
> improve filesize a little bit (no more then 0.5%...), but at the
> (small) cost of PSNR... Well try it yourself. This is how to do that:
> 
> max_bframes >=0; . Sorry about qpel... if you try with -1, it just
> won't work and will increase filesize. (oh well, check it youself if
> you want to, too).
> I also had some problems with chroma ME - it should work but I think
> it doesn't.
> Yes it's slow.
> It works with b-frames.
> 
> Have fun,
> Radek