I have two video cameras recording an event 30 minutes long. I hit start on the two cameras at different times. I would like to figure out a command-line script that can basically diff the audio to figure out the difference between the start times and align the videos. The audio won't be exactly identical as they are two different cameras, different mics, different locations, but they are both recording an interview, so the audio should be able to be synced. Any ideas?
I think to automatically find the best-fit audio delay between the two tracks you would need to calculate a cross correlation of the two audio tracks. As far as I know this doesn't exist in ffmpeg. But it would be nice to have.
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