ATSC is a broadcasting (digital) format. MPEG-2 is a compression method. They are not directly related. ATSC has MPEG-2 as one of its main compression method.
I think what LonghornXP meant was that instead of recompressing 45Mbps streams down to whatever they've been using by DirecTV, they will just pass whatever the local stations are sending (which, except for Fox-HD, is recompressed in the local stations to ATSC-compatible < ~19 Mbps streams).
This actually makes sense and there is no other way actually since local programmings and commercials are inserted by the local stations before being sent out.
Hong.
I think what LonghornXP meant was that instead of recompressing 45Mbps streams down to whatever they've been using by DirecTV, they will just pass whatever the local stations are sending (which, except for Fox-HD, is recompressed in the local stations to ATSC-compatible < ~19 Mbps streams).
This actually makes sense and there is no other way actually since local programmings and commercials are inserted by the local stations before being sent out.
Hong.