On Wed, Feb 16, 2005 at 10:11:03PM -0800, Lonnie Borntreger wrote: > If I understand things correctly, myth obtains the sound for a tv > program it is recorded from the sound card, which gets its signal from > the "loop" wire (taking the audio out from the tv card and putting it > into the aux or line in on the sound card). So, if you put two bttv > based cards in one system, and they are looping through the same sound > card, and it was recording two programs at once, wouldn't both > recordings get the audio from both shows overlapped? How does it > separate the audio from the different cards? Am I being stupid here and > missing something simple?
You should try and get btaudio working. It allows you to record sound directly from the card over the PCI bus. btaudio is a sound driver that is included with the linux kernel. Not every bttv card works with btaudio though, I had two bttv cards at one point and I never could get either to work. I ended up with two audio cards to support the two bttv cards. Something else to keep in mind: capturing from three bttv cards will take some significant CPU power. Not out of the reach of a modern system probably, but if you're like me the backend is not exactly state of the art. good luck!
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