Hi, Kernel 2.2 includes decent video support for a lot of modern TV cards. However I don't see a userland program to control them in RH5.9 Perhaps "xawtv" would be a good choice - it is GPL licence and moderately mature.
This will be a powertools candidate.
Why not add GRadio as well? I build the Linux/alpha RPM it's REALLY small (75k RPM, 23k SRPM) and a nice addition. http://fallout.cs.unr.edu/projects/gradio/ I understand program bloat, but if you going include TV stuff you might as well have the radio stuff too.
tv support is now included in powertools.tv support is now included in powertools.