The recording is the raw feed from the satellite requiring subscription and channel authorization to play back.
There are a couple of counter acting factors. Standard sat channel in MPEG2 are lower res but MPEG2 has less compression then the MPEG4 used for HD and local channels in HD. I still think a regular SD program on an MPEG4 HD channel may be less storage then a true full 16:9 HD.
When Local HD's software finally arrives the OTA HD will be HD in MPEG2 so they will consume more storage space then the HD from satellite. I expect them to be saved as raw feed also, known as .ts files.
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