[pvrusb2] s-video input and audio question

Rod Smith rodsmith at rodsbooks.com
Sat Mar 10 12:51:07 CST 2007

On Saturday 10 March 2007 13:17, devsk wrote:
> Hi,
> I have a question regarding the s-video input. When using the s-video
> input, where does the mpeg2 stream get its audio from? Is it from the
> composite red and white connectors?


> if that is the case, then following is little confusing, because its a mix
> of audio-video inputs: # cat ctl_input/enum_val
> television
> s-video
> composite
> radio

Television and (presumably; I've never used it) radio inputs include their own 
audio streams. The S-video and composite inputs are both paired with the RCA 
audio jacks; they take audio input from those jacks. If you want to use both 
composite and S-video inputs, you'll need to find a way to feed audio input 
from the appropriate associated source, such as a separate switch box. By 
design, neither composite nor S-video includes audio on the same cable or 
connector as the video, hence the need for separate audio connectors.

Rod Smith, rodsmith at rodsbooks.com
Author of books on Linux, FreeBSD, and networking

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