[vdr] HDTV -> mpeg4

Grégoire Favre Gregoire.Favre at gmail.com
Wed Mar 30 16:51:48 CEST 2005

On Wed, Mar 30, 2005 at 04:08:04PM +0200, Udo Richter wrote:

> Do you really expect any speed advantages on 64 bit for video encoding?
> I dont think that video encoding needs more than 2G Ram or real 64 bit
> integer math. And with SSE2 enabled the 32-bit code shouldnt be slower, or?

When libavcodec wasn't x86_64 asm optimized, I was getting about 20 fps
in 64 bits mode and 22 fps in 32 bits emulation, and now that's it's asm
optimised, I get about 60 fps, so yes I think it make an hudge
difference :-)
	Grégoire Favre
http://magma.epfl.ch/Gregoire.Favre mailto:Gregoire.Favre at gmail.com

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