[MEncoder-users] Optimizing Mencoder on Ubuntu vs FreeBSD

Andrew Edmond edmond at gridnetworks.com
Wed Apr 12 23:35:54 CEST 2006


> > Anybody ever been through this problem before, or am I missing the 
> > "optimize mencoder for Linux" web page somewhere?
> 
> A few thoughts; maybe somebody else can help more:
> 
> 1. If you still have the BSD available, can you try some 
> other benchmarks? Such as: (a) bzip2 on the same file (b) 
> mencoder with lavc and/or x264 instead of xvid.

I will test this out for sure.  Great idea.
 
> 2. Do you have CPU frequency scaling stuck on the "powersave" 
> governor or something? Is 'cat /proc/cpuinfo' what you expect?

Nope /proc/cpuinfo looks look.

> 3. Are you sure you're running exactly the same mencoder and 
> xvid versions?

Ys.

> 4. Do you have an assembler installed? There was a recent 
> thread in which someone pointed out that xvid doesn't use any 
> assembly code if you don't have an assembler. I haven't 
> experienced that myself, but run xvid's configure and check 
> for this line:
> checking for whether to use assembly code... yes

AHAH!  Ubuntu didn't have nasm installed.  Installing that now and doing
some performance testing.  Thank you so much for this catch!

Andrew




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