[gunner45]

Aren't all these four channels carried on the Local TV multiplex (L-COM)? The problem, as I see it, is that these low-margin channels will be hit if compression is changed from MPEG-2 to MPEG-4 when an old TV cannot decode MPEG-4. Another possibility is that the broadcasters are paying a fixed amount, so have no incentive to move to MPEG-4. However I don't think MPEG-2 will survive after 2030.