I'm currently using my WinTV-HVR-950Q to receive Clear QAM channels via my cable subscription (I have the card set as a DVB tuner in mythtv). This is working pretty well for me, but I was hoping to add the analog cable channels to mythtv too.

I attempted to add the card to mythtv as an analog v4l card. I selected /dev/video0, and mythtv correctly detected the card as a "WinTV-HVR-950Q", but when I scan for channels, it finds none. I have cable set as the frequency table, and have tried this multiple times, with no channels found. If I open tvtime, it find all ~100 analog cable channels successfully.

What am I doing wrong?