I need imovie to support one of these formats in HD.

There are three H.264 formats you can choose when recording a video:

* .TS, which is a generic 'transport stream' compatible with many digital media players
* .M2TS, which is compatible with the Sony Playstation3
* .MP4, which is compatible with the XBox360
These videos are going to be recorded from a happuage hd pvr 1212 from a ps3, onto a PC, then moved to my macbook via flash drive.