user22216: I'm looking for a program that can synchronize audio and video from separate files. PluralEyes does this. I'm looking for something that runs on Linux and preferably is open source.
I imagine a CLI that goes like this:
$ clappersyncoffsets in.pm4 in.wav
0s 3.876s
$


user27889: It's a webtool but seems interesting:
https://github.com/allisonnicoledeal/VideoSync
This other is open, but - AFAIK - just for Windows:
https://github.com/protyposis/AudioAlign

user24532: I assume that you have a sound channel recorded on the camera which is in sync with the picture. In that case you only have to find the offset between the audio channels.
This tool claims just that: https://github.com/bbc/audio-offset-finder
I never tried it yet, but I would be very interested on your experiences if you would give it a try. 

22216: <p>I'm looking for a program that can synchronize audio and video from separate files. PluralEyes does this. I'm looking for something that runs on Linux and preferably is open source.</p>

<p>I imagine a CLI that goes like this:</p>

<pre><code>$ clappersyncoffsets in.pm4 in.wav
0s 3.876s
$
</code></pre>
 27889: <p>It's a webtool but seems interesting:</p>

<p><a href="https://github.com/allisonnicoledeal/VideoSync" rel="nofollow noreferrer">https://github.com/allisonnicoledeal/VideoSync</a></p>

<p>This other is open, but - AFAIK - just for Windows:</p>

<p><a href="https://github.com/protyposis/AudioAlign" rel="nofollow noreferrer">https://github.com/protyposis/AudioAlign</a></p>
 24532: <p>I assume that you have a sound channel recorded on the camera which is in sync with the picture. In that case you only have to find the offset between the audio channels.</p>

<p>This tool claims just that: <a href="https://github.com/bbc/audio-offset-finder" rel="nofollow noreferrer">https://github.com/bbc/audio-offset-finder</a></p>

<p>I never tried it yet, but I would be very interested on your experiences if you would give it a try. </p>
