[MPlayer-users] audio filters drain the cpu

[Rich Felker]

On Wed, Dec 14, 2005 at 09:22:26PM +0100, Fredrik Eriksson wrote:
> playing a audiofile like
> 
> mplayer music.mp3
> 
> works just fine, without any notable cpu usage. However, trying to use a 
> audiofilter, like
> 
> mplayer -af sub music.mp3
> 
> or
> 
> mplayer -af surround music.mp3
> 
> the cpu usage goes up to over 90% (amd64 3500+). This happens both with 
> pre7 and the cvs. I'm starting to think this is a alsa problem, but I 

If you think it's an ALSA problem why not try -ao oss and see if the
problem goes away? That would narrow it down a lot.

Rich