.tivo files are encrypted .mpg file using the Media Access Key. You need to decode it using TivoDecode, which KMTTG also uses. KMTTG also has an encode feature which comverts to iPad.
Original S1 (Recycle Heaven)
Series 2 (PLS, sold)
TiVo HD (XL, PLS, "652")
Juliet Basic (4XL, PLS)
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!