One issue with the precise resolution Gruber is proposing is that they aren't multiples of 16 which I believe is required for macroblocking used to maximize efficiency in video codecs. This is why the 4" iPhone is 1136x640 which isn't the closest pixel count to 16:9 but is the closest that is a multiple of 16. Gruber may have the right idea with his resolutions, but if Apple is doing something along those lines they'll likely bump them up slightly to get multiples of 16.
EDIT:
http://en.wikipedia.org/wiki/Macroblock
Looks like newer codecs allow 8x8 and 4x4 macroblocks. So perhaps multiples of 4 will be the constraint.
EDIT:
http://en.wikipedia.org/wiki/Macroblock
Looks like newer codecs allow 8x8 and 4x4 macroblocks. So perhaps multiples of 4 will be the constraint.
Last edited: