an imput from s-video can be set with v4lctl in xawtv

you need to install the xawtv (apt get install xawtv)
then set the composite video input in case you have an camera attached to the a/v input

v4lctl setinput Composite1


cool stuff you can watch your tv station from home using X forward protocol (also you can record it )

ssh -X machine_with_tunner

xawtv -remote

you can check the card inputs with
v4l-info



xawtv - Wikipedia, the free encyclopedia

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