[Mplayer-cvslog] CVS: main/DOCS/tech encoding-tips.txt,1.7,1.8

[Felix Buenemann]

On Sunday 19 September 2004 20:44, D Richard Felker III wrote:
> On Sun, Sep 19, 2004 at 05:42:33PM +0200, Felix Buenemann wrote:
> > It would probably be worthwile that mpeg4 standard officially allows no
> > more than 128 frames between keyframes and it's probably a good idea to
> > use that in order to avoid decoding errors (Image going green/pruple/...)
> > on decoders with different precision idct (like eg. Hardware
> > MPEG4-Decoder chips from ESS and Mediatek aus used in DivX-Standalones)
>
> i seriously doubt this is an issue, since basically _all_ divx rips
> you'll download have keyint at least 200 and often 300, and i expect
> that's what these hardware players are made for...
I seriously think it is an issue, as I do own two divx standalones one with 
ESS Vibratto S chip (Centrum Gemini 330) and one with Mediatek MT1389GE chip 
(Elta 8883 MP4). Both have problems with long keyframe intervals (like in 
pans and stuff). Dunno about ESS Vibratto II and Sigma MPEG4 chipsets.

> rich
-- 
Best Regards,
        Atmos
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