Re: [XviD-devel] scene change detecting in Bframes mode

[Christoph Lampert <chl@xxxxxxxxxxxxxxxx>]

On Mon, 19 Aug 2002, Marc FD wrote:
> 
> _hyperfast_ ?? I'm here :)
> the long part of a PSNR is the SSD, and you can't use psadb for that !!
> in fact psadb is crap when it comes to cmads (locally clipped mads)
> 
> But why do you need a PSNR routine ?? to make some automated choices in
> encoding ??

Yes.
a) "Constant quality" encoding (distant future...)
b) Automatic B-frame decision  (not so distant future)

> PS : SSE2 ?? i think you now the majority of the coders are too poor to buy
> a P4 :) and i dislike intel, (AMD is not really better, but it's cheaper
> so i don't mind ...)

Yes, but there are 50 Million P4s sold. P4 with SSE2 is going to be around
for quite a while, AMD Opteron has SSE2. It would be stupid not to try to
be as fast as possible on every plattform available.

gruel

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