mike at phasegate
Apr 14, 2003, 1:05 PM
Post #1 of 1
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Sound encoding overly expensive?
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Hi All;
First, I've got to congratulate all the contributors to mythtv, this is the
best excuse for buying a fast machine that I've ever come across....
I have the backend installed on a 1GHZ PIII Xeon, scsi, etc. My frontend
runs on a 800MHZ PIII laptop. I'm playing around with different quality
settings in an effort to come up with a good balance between quality and
performance.
One thing I've noticed is that encoding audio takes an enormous amount of
CPU, on my machine it takes about 30 - 35% of the CPU. With my resolution
settings this is roughly equal to the % of CPU spent encoding video. (I
know this because I've experimented with encoded vs uncompressed audio).
It would seem that the effort to encode audio is quite high, although I
don't really understand what's going on behind the scenes.
I'm using on-board audio. If I add a SB card to the PCI bus, should I
expect to see any decrease in CPU load?
Thanks,
Mike
--
Michael Jones
mike [at] phasegate
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