Adobe Media Encoder changes dimensions

Question

In After Effects I add my 480x320 composition to  Adobe Media Encoder Queue. Then in AME I keep the default settings (H.264, Match Source - High bitrate).
It seems to me I should end up with a 480x320 video, but the result is 436x320. What am I missing?
After Effects CC, Adobe Media Encoder CC

Answer 1

Try this. Render your project using the Render Cue to something like Jpeg Quicktime at best quality. Check the size.
Bring the footage into the AME and edit the H.264 frame size and frame rate to 480 X 320. Render a test and check the footage size by opening it in QT or your windows media player and check the frame size using the info or movie info window.
If you get different size than your encoded with h.264 then tell us more about your project.
BTW 720 X 480 is a rectangular pixel frame size for either widescreen or 4:3 SD video. What you got was the square pixel equivalent which is what you want for web delivery.
Come to think of it, you should also check the PAR of your comp. If it is not square pixels then you're doing something wrong. The only time you should ever use non square pixels is if you are rendering specifically for SD TV delivery or rendering back to a camera acquisition format that does not use square pixels. I'll bet the PAR is your problem.