Originally Posted by imarkup
................ or is it encoded at 16x9 with letterboxing in the encoded picture (thus NOT using the full resolution of DVD)?
Bingo -- For anamorphic DVD , all is mapped to a 16:9 frame, so there is waste for anything bigger than 16:9
The "increase in resolution" pertains to utilization of more pixels on the display, which isn't a bad thing.
Just a shame, as has been commented for years, that the more epic the motion picture - the less pixesl are devoted to it. Likewise CH mavens are seeking to make the picture bigger with fewer pixels.
Typical "do more with less" motto .