[MPlayer-users] Single threaded mencoder on a Dual Core machine

Giacomo Comes comes at naic.edu
Wed Apr 19 19:38:10 CEST 2006

On Wed, Apr 19, 2006 at 07:10:35PM +0200, Meino Christian Cramer wrote:
> Hi,
>  as far as I know, mencoder isn't able to use both cores of a modern
>  Dual Core CPU like an AMD64 X2 since it is single threaded. 

man mplayer



>  What I know for sure is, that only 50% load is on my CPU, when
>  mencoder is working on a video. Or in other words: The encoding
>  process will take twice the time....
>  Since I am doing two-pass-encoding, I had an idea which may be
>  completly nonsens (or not...I dont know the internals of the encoding
>  process...):
>  Would this script (or simmiliar) work:
>  #!/bin/sh
>  mencoder ...... -o /dev/null .... -vf pass=1 <infile>;
>  sleep 60
>  mencoder ...... -o <outfile> .... -vf pass=1 <infile>;
>  ...starting the second process to utilize the second core with a
>  delay to not to get in collsion with the "result stream" of the
>  forst process...
>  Only an idea !
>  Would something like that work ?
>  mcc

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