Not likely that MythTV will support, thus not likely that LMCE will support it. Probably the same as the other HD solutions such as HVR-1250, HVR-1600, and HVR-1800. All are good cards, but currently only the ATSC works. This is why I may be getting a dated PVR-150 before this. Even if it only has 9-months of TV. I don't watch antenna much, mostly internet TV and DVDs.