I’m still accumulating statistics on the rearranged digital TV stations, but stumbled across something rather unexpected. On Prime the ishoptv shopping channel, and the RACING.COM horse racing channel, don’t use MPEG2 video encoding. They’re now H.264, aka MPEG4-AVC (Part 10). Their audio is AAC. Anyone with an old set top box or early digital TV probably can’t receive them.
Looks like I’m going to have to double check the others.
(How do I tell? The Beyonwiz set top boxes don’t report this information. Well, I record five minutes of each channel and then slurp them up onto my computer and play them back, one by one, using VLC. Ctrl-J displays the codecs.)