I've noticed lately that I'm picking up some channels/feeds in SD/1080i on my Coolsat 8000. Why would someone broadcast an SD channel in 1080i format? Is there some benefit over 480p?
usually those are in MPEG4
If it's 1080i or 720p, then it is HD. I assume you are talking about SD video that is upconverted to HD for broadcast. Do you have any examples?