Re: Xvid performance woes

Téletchéa Stéphane a écrit :
> On this specific performance problem, do you have any numbers of video 
> encoding in 32 versus 64 bits (in Mandriva i mean), i'm not sure if the 
> 64 bits (except here for the xvid specific problem) is much better in 64 
> mode than in 32 ...
>
> If you can share numbers, that'd be cool :-)
>   
I don't have any real numbers; moreover, I don't have parallel installs 
of Mandriva 32-bit and Mandriva 64-bit (I have a mere WinXP dual boot 
partition that's gathering dust somewhere on my HD), so all I can say is 
that Koepi's Xvid build for Windows ran more or less as fast as a C-only 
compile of Xvid in 64-bit, using an MPEG-2 stream as source. Now, maybe 
there is no difference between 32- and 64-bit Xvid speed, if Koepi's PE 
build is making use of the C implementation (which I doubt: I think he's 
made his build based on the Pentium Pro instruction set, without MMX nor 
SSE, but with assembly support). Other factors such as the software 
chain I was using in WinXP may have slowed things down.
I may try to install the 32-version of avidemux and libxvid4 and run 
some tests, but I really don't feel curious enough for now.

Mitch