[MEncoder-users] Second CPU not used

[D Richard Felker III]

On Mon, Jan 17, 2005 at 11:34:32AM -0800, David Liontooth wrote:
> Dominik 'Rathann' Mierzejewski wrote:
> 
> >On Monday, 17 January 2005 at 09:43, David Liontooth wrote:
> > 
> >
> >>On a dual opteron machine, mencoder only uses one of the CPUs.
> >>I'm hitting 99.9% usage -- is there a way to use both?
> >>
> >>I notice it when using xvid -- if I use lavc, the CPU usage is much
> >>lower, and I can't tell whether it's using both CPUs or not. In a
> >>recent changelog I see multithreading is enabled for -lavc -- does
> >>that mean it's using both CPUs?
> >>   
> >>
> >
> >Not by default, but you can enable multi-threaded encoding with some
> >ME penalty with the threads option. See man mplayer.
> > 
> >
> What's ME? Thank you for the suggestion; I'll give that a try.

motion estimation. the motion estimation won't be quite as good (i.e.
slightly reduced quality-to-bitrate ratio) with multithreaded encoding
since some of the info that could improve quality isn't available yet
to each thread.

rich