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I'm trying to export a composition from Adobe After Effects. My Comp is 1280x720, and ideally I'd export with an mp4 container, and h264 video codec. Problem is, After Effects is giving me a PAR error, telling me the video will be resized "to meet format contraints". Exact error:

"Video will be resized from 1280x720(1.00PAR) to 176x120(1.21PAR) to meet format constraints."

Anyone know of a fix to this? Looks like my encoder is MainConcept MP4 Video. I'm using CS6. Thanks!

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Could you elaborate on how you are choosing the container and video codec? An overview of the steps you're taking would help answer the question. Because when I choose the H264 output module in the After Effects renderer I get a .mp4 file with no PAR (Pixel Aspect Ratio) errors. – Bart Arondson Feb 11 at 0:20

2 Answers

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It sounds like you are using a trial version of an encoder that imposes limitations on the size it will export based on the severe down-scaling that it is imposing.

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In AE's "output module settings", with the format set to h.264, click "format options". Under the "video" tab, make sure "Level" is set to 5.1.

Here is a wikipedia entry which contains a table on h.264 level dimension constraints.

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