Need a bullet proof workflow to sync up with an external audio

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I shoot at 60p (59.94) but deploy to a timeline of (30p 29.97)

I own 2 tentacle units and am able to sync 2 video cameras with no issue BUT

I can never get my video to line up with an external audio source such as an h4n.

The audio of the external source is constantly drifting.

Please help me develop a workflow so that I don’t spend hours on this every project.  Tentacle was supposed to save me time but so far it hasn’t fulfilled it’s promise.

 

Thank you

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Hi Fokke, thanks for your reply.

I’m setting the tentacles to 29.97.

I shoot for over 4-5 hours at live events and so the drift is pretty substantial at the end.

My h4n produces one or 2 long files and so by the time I’m at the end of the audio the drift is huge.  Now when I use FCPX to take the timecode of my DVX200 and the audio it matches perfectly, but If I try and export both camera footage from tentacle studio into a multicam clip and then lay the audio file on top the audio exceeds the length of the entire shoot.  I tried exporting to both a 29.97 project and a 59.94 same result.  Audio matches at the very beginning but then goes about 110% or more past the end of the video.

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