[mythtv-users] ffmpeg and multiple CPUs. Was: Should I be switching to 0.21?

[Tino Keitel]

On Mon, Apr 14, 2008 at 13:07:39 -0400, Tom Dexter wrote:

[...]

> is virtually identical.  It seems that, at least with my
> hyper-threaded 3 Ghz P4, ffmpeg works much better with a single core.

Your P4 has only one core. It just fakes 2 cores to the OS. AFAIK this might
be better when 2 tasks are doing very different tasks regarding the
machine code, but is even slower when 2 tasks do the same things
simultaneously. It looks like your scenario matches the second case.

Regards,
Tino