[MPlayer-users] Significant CPU utilization with >2 channels?

[Eric Brundick]

(sent from wrong email addy by accident)


Using -ao oss results in no sound (although it does appear to be
playing, maybe the OSS emul. isn't working correctly with 4 channels?)

Hmm... -ao sdl works.  I get sound output and its CPU utilization is
low.  Score!

It looks like -ao sdl results in choppy audio when playing an .AVI, but
when I use -ao alsa with said AVI, mplayer isn't using the CPU heavily like it is when
I'm playing an MP3 with -ao alsa.  Strange, but oh well.  Using
-ao sdl results in good sound when playing only audio (MP3s), but with
low CPU utilization.  I'll just stick "-ao sdl" into my bash alias for
'mp3'.

Thanks!

On Fri, May 05, 2006 at 09:46:20AM -0400, Derek put into existance:
] On Wednesday 03 May 2006 12:11, Eric Brundick wrote:
] > I use the following command to play mp3s:
] > alias mp3='mplayer -channels 4 -ac mad -af
] > equalizer=1:2:1:0:0:0:0:1:2:4,channels=4:2:0:2:1:3,volume=30:-1'
] >
] > Problem is, this ends up using around 60-90% CPU on an AMD Athlon64
] > 3000+.
] >
] > If I subtract "-channels 4" and the channels= piece of -af, it uses more
] > like 0.1% CPU, and plays out of the headphones.  Note that this behavior
] > persists whether I'm using Skype in parallel or not, so I am fairly
] > certain Skype has nothing to do with it.
] >
] > If I subtract "-channels 4" but keep the channels= piece in place, it
] > still only uses ~0.1-0.4% CPU, but I get no sound.
] >
] > I noticed an older thread mentioning this:
] > http://www1.mplayerhq.hu/pipermail/mplayer-users/2003-October/039180.html
] >
] > For the record, this is my ~/.mplayer/config:
] > vo=xv
] > fs=1
] > ao=alsa
] > monitoraspect=16:10
] 
] Have you tried using a different -ao?  -ao oss would probably be the first 
] thing to try, or do an -ao help to see what's available to you.
] 
] _______________________________________________
] MPlayer-users mailing list
] MPlayer-users at mplayerhq.hu
] http://mplayerhq.hu/mailman/listinfo/mplayer-users