Originally Posted by hjriver
I was thinking D* would have to downconvert the HD for all the non-HD subscribers or replace all the set-top boxes.
Most of the new off air receivers which cable and other multi channel providers now use (and, for that matter, the satellite IRDs that we and they use), provide both HD and SD outputs from any HD feed.
One of the survey questions that all of us broadcast stations have been asked many times is whether we prefer that the multichannel provider present our programming as SD in "center cut" or letterbox. Most of us have requested "center cut," which means that the SD viewer sees a 4x3 SD picture.
Since virtually every program is still shot using the "safe action" and safe title" areas of SD 4x3 (take a look at any program - the important content is in the center of the screen), there is no loss to the SD viewer.
If and when the AFD (active format descriptor) code becomes widely utilized, this question will become moot since the AFD will provide data to adjust the IRD on a program by program basis.
Hope that everyone has a great weekend. wb