The audio and video are in sync when I play the files in quicktime, but when I preview them in After Effects and when I render to mp4 the audio is very out of sync. I'm a beginner, and I don't know a lot about codecs. I've tried adjusting my composition settings (matching frame rate to the stated frame rate in the quicktime file) and playing around with settings in Adobe Media Encoder, but to no success. But I'm a beginner with processing video files in AE.
Thank you for any help.
Take the video files into a video editing application. Un-link the audio from the video. Move the audio track until it's synced up with the video. No AE necessary.
Thank you! Classic over-thinking the problem and missing the simple solution