When we try exporting our 4K project (4096x1707) direct form After Effects using H264 we get the yellow mismatch warning at the bottom. It then resizes the file to 2000x1707. Other formats work fine. If we take it to Media Encoder then H264 works fine but took over 30 hrs to render vs 6.5 hrs coming from AE using another codec. Is there a way to correct this?
H.264 encoding has a very specific set of allowable frame sizes. Your composition is not one of those legal sizes. The size limits are based on whole number multiple values of the minimum pixel block used to encode mpeg files.
Thanks for the reply... So why does Media Encoder allow for it? We are using a 2:35:1 setting.
Short of motion picture theaters, I can't think of anything that can even play back in a 2.35:1 aspect ratio.
What device are you using for playback, and what kind of device are you using to show it? And if you have delivery specifications from someone else, what are they?