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Missing Audio in FCP

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Jaclyn Spirer
Missing Audio in FCP
on Feb 18, 2014 at 10:46:56 pm

I mainly work on Avid but I'm trying to do a project in Final Cut Pro. Yesterday when I was working, everything was fine. Today when I opened the project, some of the audio is missing in the sequence. The waveforms are still there in all the clips. The source material still has the audio - just playing out part of the sequence is silent. Any advice? I tried researching and changing the Audio Playback but that didn't do anything.

Thanks in advance!


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Mark Suszko
Re: Missing Audio in FCP
on Feb 18, 2014 at 11:12:33 pm

Go to 'View">"external Video">"Refresh all AV Devices". This simulates hitting your output card with a hammer.

Check the little boxes to the left of the problem tracks to see if you soloed or muted a track.


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Jaclyn Spirer
Re: Missing Audio in FCP
on Feb 19, 2014 at 10:01:35 pm

Hi Mark,

Thanks so much for your quick response! Unfortunately, that didn't help. I was reading somewhere that it might be because of my audio format? It was an mp3 that had 44.1KHz - when I converted it to 48K and I relaid it in, it was there. Not sure if it will go silent down the line, but could that be the problem? Different rates? But I thought FCP can use different rates?

Thanks again.


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Mark Suszko
Re: Missing Audio in FCP
on Feb 20, 2014 at 12:27:24 am

Well, FCP7 doesn't like it when you do...


Did you maybey pan the audio to just one channel, or create a phase-cancellation issue? When you double-click on the audio file, does the waveform come up and what do the controls above it read?


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William Carr
Re: Missing Audio in FCP
on Feb 20, 2014 at 11:52:14 pm

48K 16 is best for smoother use. Also delete all your audio renders for that sequence using Tools>Render Manager and then see if it plays properly. Then render all your audio. After that you can also do a Render Only>Mixdown to play back without hitches.
But if you are continuing to edit that sequence you will occasionally have to flush out the rendered audio bits piling up, as above.


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