[Ffmpeg-devel] [PATCH] Fraps decoder

Rich Felker dalias
Sat May 14 03:01:06 CEST 2005


On Fri, May 13, 2005 at 12:20:14PM -0600, Mike Melanson wrote:
> Loren Merritt wrote:
> >I don't know anything specifically about Fraps, but any lossless 
> >compression necessarily uses variable-sized frames. Pidgeonhole 
> >principle, you know.
> 
> 	Agreed. However, given that v0 is reordered YUV420 and v1 is BGR24, 
> 	I was wondering if v2 was actually "compressed" or just encoded in a 
> slightly different raw format.
> 
> 	FPS1 promises a difficult task-- to be able to compress, losslessly 
> 	and in real-time, video frames from a computer game running at 1600x1200 
> that already puts incredible demands on system resources.

This sounds like a false claim. Just reading 1600x1200 from video
memory at 60 frames per second is not possible... Much less doing
anything with it afterwards.

Rich





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