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I have a bunch of separately recorded audio and video tracks that I need to sync. By sync (synch?) I mean align the two tracks so that the audio matches as closely as possible. The two tracks are recorded from different mics (a boom mic attached to a sound recorder and the built in crappy mic on a camera), so they're not exactly the same.

I can do it with Resolve or Premiere etc., but using a GUI app is soo tedious. I feel like this is the sort of thing that ffmpeg should be able to do, but I can't find anything.

Are there any command line programs that will sync two clips using their audio?

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  • Any distinctive sounds present - clapper?
    – Gyan
    May 31, 2017 at 5:03
  • That's what redgiant.com/products/pluraleyes does. Not free though.
    – audionuma
    May 31, 2017 at 6:10
  • Not command-line either. I want something I can automate. @Mulvya, no clapper.
    – stib
    Jun 2, 2017 at 2:57
  • sync amount would be guessed out of nowhere or provided by user?
    – user12174
    Aug 29, 2017 at 7:30
  • @PaulB.Mahol synched by audio. Premier and Resolve and FCP use some sort of algorithm that matches the timing of the two clips by comparing the audio. I would have thought it's the kind of thing that would exist as FOSS.
    – stib
    Aug 30, 2017 at 12:24

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