[cybil lake] “I’m importing all the audio tracks that go with one take, and syncing it with the video – and FCPX makes one video track with one audio track – with all the mics in there .
This sounds like a polyphonic wav file from a multichannel recorder. It looks like one track but the individual components are visible in the inspector. If the recorder supports iXML, you can import the track names into FCPX and those can be passed on to an audio finisher.
https://www.youtube.com/watch?v=V7tcrNlnsQU
If the files were not properly labeled during production, you can assign roles to each channel to obtain similar results: https://larryjordan.com/articles/fcp-x-using-and-importing-ixml-audio-names/
Those audio roles can be exported as separate files for downstream use, or as a multitrack file:
https://support.apple.com/kb/PH12653?locale=en_US
https://finalcutproxediting.wordpress.com/2016/04/01/exporting-audio-from-fcpx-to-pro-tools-without-xml-or-aff/
[cybil lake] “….If I sync them all together like this – will an audio person be able to later separate them? I’m trying to decide if I should sync each individual mic track w the video separately”
If it’s a polyphonic file you just sync once; normally the other contained tracks are mutually sync’d. If it is discrete files from multiple recorders, then you’ll have to sync them just like any multi-camera situation with separate audio sources.
For a single video and single audio or multiple audio sources, it’s often better to use a multicam clip not a sync clip: https://www.fcpworks.com/sync-or-multicam-clips/
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