I've got a WinTV 401 card (Bt8x8) and can't figure out how to capture at resolutions other than 384x288 under Linux. I've been using xawtv and plan to try kwintv, but I haven't been able to change capture resolutions. I searched google and can't tell if it's a bttv driver problem, an xawtv problem, or something else. I'm running RedHat 7.3 if that makes a difference.