Hmm - well I'm pretty much out of my depth now! But in your place I
wouldn't have added both video sources. How do you know which one's
being used? If I remember right you can press 'Y' or 'C' to change
sources, so see what that does. But as I said, I'd keep things simple
and only define the source I want to use (and given a choice between
composite and S-Video I'd choose S-Video).
I don't know but I thought it worked like this: Since I've defined two channels on two inputs with two different video sources, I have channel 600 as the composite input and channel 601 is the S-Video input. I think pressing Y or C was removed just before
0.19, and now myth just relies on the channel number to work out which input to use.
Rather than a mythtv problem, I think this is a linux video problem, since tvtime shows it in black and white too. Maybe the S-Video lead would be better, however when I was testing in tvtime both composite and S-Video were B/W. Also I only have one S-Video cable (at the moment), and that links my graphics card to the TV so I don't want to use it all the time. At a guess I'd say if its possible to get colour on the S-Video lead, it should also be possible to get it on the composite, so I'll stick with composite for now.
Thanks,
Jonny