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".

Error Message:

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!

  • 1
    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. – Saaru Lindestøkke Feb 11 '13 at 0:20

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.

| improve this answer | |
  • it works! thank you – user4894 Oct 25 '13 at 8:04
  • This most likely won't get seen, Being a little late. About 2 years late. But thanks so much Jason, I've never had this issue before and resolving it was just completely unknown to me. I don't know why it happened as I was rendering videos completely fine the day before, Thanks again. – user10899 May 20 '15 at 19:55
  • Very very useful Information. Successful method. Thanks – user12328 Dec 18 '15 at 13:05

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.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.