projects rendering in terrible quality

Question

ive been using after effects for a while now and never had a problem but now all the sudden whenever i render a video its terrible quality. i made my composition from my footage and it looks fine in after effects but when i render the video from after effects using any footage without editing it at all it looks terrible. all the render settings are completely default and im exporting in h.246 mp4 format. ive attatched the raw video and what it looks like after exporting and screenshots of all the export settings. i got 1 error that says itll change the output from 60.026fps to 60fps so audio may not synch but i googled it and cant find a way to fix it. the error only happens when i change from avi to mp4 and if i export in avi it looks fine. although ive been getting this error since i started using ae so i dont think its the cause. clips were recorded on my phone and sometimes the frame rate varies by a bit but has never caused a problem before. please help

Shebbe · Accepted Answer

Note 1. Never adhere to phone footage framerates as working framerates. Almost all phones shoot in variable framerate which AE cannot work with. Instead it returns an averaged framerate number. A timeline is always a fixed framerate so simply always round to the intended target that 'was shot' in this case flat 60.

Note 2. You are probably seeing bad results because the target bitrate is really low for a 4K video. Try setting it to someting like 8Mbps or higher instead of 2.

ShiveringCactus · Answer

That's a really odd frame rate and might not be the cause of any issues. Try rendering out a Quicktime ProRes video instead of an MP4 and see if that retains the quality. Then you can convert the ProRes file to an MP4 in seconds afterwards.

My guess (with the odd framerate as a clue) is that the video was recorded using an odd, proprietary codec which is screwing up the MP4 encoding process.

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