[MEncoder-users] Multi-threaded xvid-encoding on dual-core systems

[Michael Archibeque]

I am definitely going to try that!  Learn something new everyday!
Thanks!!!!

Michael


On 1/9/07, Guillaume POIRIER <poirierg at gmail.com> wrote:
>
> Hi,
>
> On 1/9/07, Markus Bonet <m.bonet at gmx.de> wrote:
> > Am Dienstag, den 09.01.2007, 13:31 +0100 schrieb Guillaume POIRIER:
> >
> > > > You have to compile the latest svn or cvs version of xvid to get
> > > > multithreaded encoding.  I hope this helps.
> > >
> > > that, and maybe also xvid needs to be compiled with multi-threading
> > > support, though it's possible that it's on by default.
> >
> > Brilliant! That did the trick (ok, could have thought about CVS
> > myself...).
> >
> > Now I am doing some tests. I get an overall usage of 140-150% in the
> > second pass. Is more speedup possible? I ran my first tests with 2
> > threads.
>
> Quoting the man page:
> threads=<0-n>
>              Create n threads to run the motion estimation (default:
> 0).  The maximum number of threads that can be used is the picture
> height divided by 16.
>
> So I'd suggest trying to put as many threads as the size of your
> picture permits, and see how much speed-up you can get.
>
> There aren't supposed to be any quality penalty due to multi-threading
> mode, so you can safely always use the max number WRT your video
> resolution.
>
> Guillaume
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