I can't give you an answer, but I have a portable video player which isn't all that different from an iPod video (just has a focus on video rather than music, so better screen/less portable), and it outputs to tv, but only through an AV Out setting. The iPod not having such a setting, I'm not sure it'd be easy to do.
Possible, perhaps. I'd search a few of the iPod sites like iPodlounge.