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Re: FCP X destroys my audio

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Oliver Peters
Re: FCP X destroys my audio
on Feb 18, 2014 at 2:30:55 pm

The conclusion of the saga is that this issue is related to the inclusion of clips with an odd sample rate. In this case, 46.034, which was a result of conforming 25fps clips to 23.98fps using Cinema Tools. FCP X may or may not have issues with other odd sample rates created by speed conversions. This audio CANNOT be present in the timeline. It must either be disabled in the clip Inspector pane or must be detached and removed.

Just as a sanity check, I ran some tests to replicate the issue. I created a new 23.98 sequence testing the same mix of conditions I had in the problematic sequence that X exported with distortion. I included a conformed clip with the 46.034 sample rate (audio present in timeline but silenced). Different machine, different media, brand new Library/Project. FCP X replicates the distortion on export.

FCP 7 and Premiere Pro CC export the clip WITHOUT any distortion.

- Oliver

Oliver Peters Post Production Services, LLC
Orlando, FL

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