[mythtv-users] Multiple cards with different audio sample rates

Michael Lynch lynchmv at gmail.com
Fri Jun 2 04:09:40 UTC 2006


I have 2 cards in my backend, one bttv based with audio cable from
line-out to line-in and one saa713x card that captures audio from the
pci bus.

The bttv card needs to have a sample rate of 48000 or the audio gets
terrible (humming) and the saa713x card needs to have a sample rate of
32000.  Herein lies my problem.  With the audio sample rate set to
48000 for the 'Live TV' recording profile, the bttv audio is perfect,
but the saa713x audio turns to chipmunks.  If it change the 'Live TV'
audio sample rate to 32000 to accomodate the saa713x card, the bttv
card begins to hum.

Being that both cards are 'Analog V4L capture card' card types when
setting up recording profiles I can not figure out what to do.  I have
tried setting up a custom recording profile, but since both cards are
'Analog V4L capture card' then the audio is still messed up.

Any ideas how to set different recording profiles for 2 v4l based
cards with different audio needs?


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