Work around a Panasonic TV bug where it can't correctly display MPEG-2 video at SD resolutions by upscaling to 1280x720.
Updated changelog
Improved support for transcoding to Panasonic TVs

Yeah it's ugly but I can't see any simple rule that would work
Replaced instances of convertToMod4 with convertToModX
Let the Panasonic VT60 rescale its videos, it has a good quality "resolution enhancer" if it's enabled