PDA

View Full Version : Is there a P4 optimalized version of Avisynth?

new_age
7th January 2003, 20:09
Hello!

Is there a P4 optimalized version of Avisynth?

regards,

NA
sh0dan
7th January 2003, 20:14
No - AviSynth and it's plugins can detect features, so there is no need for a specific P4-version. Most filters are optimized in MMX and ISSE, making them work fast on all processors - including Athlons.

As for plugins: Simpleresize is P4-optimized, and MPEG2DEC3 (and possibly other verions) are P4 optimized.
JohnMK
8th January 2003, 06:26
If I'm right, I think compiling Avisynth with ICL7 (with the -QaxW switch) might add some SSE2 optimizations in some of the resize filters. I'd love to compile Avisynth in MSVC 6.0 SP5 w/ ICL7, I just don't know how :-/
sh0dan
8th January 2003, 09:22
Unless it can transform MMX /ISSE assembler to ISSE2, nothing much will be changed. I doubt there would be much gain, since 95% of all time-critical code is assembler optimized. It might be able to do some better pipeline adjustments for P4 - most things are optimized for the K7 pipeline. But again - I don't know if ICL7 does any changes to the inline assembler.