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WAV files importing incorrectly
Hi Folks
We had an issue yesterday when audio files imported in one edit suite show up as 60fps (wrong) and in another edit suite as 30fps (right).
It seemed at first like the files had a 29.97 vs 30 pulldown discrepancy. They’re 22 min long mix files and they were drifting slowly out of sync from the timelines we were putting them in. The sync drift was exactly the amout you’d expect if it was a 29.97/30 discrepancy.
The solution was to re import them in a different edit suite into a different project. Both suites are running the same OS, FCP and QT versions.
Although we solved the issue, we’re wondering if anyone else has seen this issue and knows what causes it.
Cheers
John Christie
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7 Replies
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You have to delete the files out of the project, set up FCP for the proper easy setup, 29.97 if that’s what you need. Then quit fcp, then relauch your project, then import the wav file.
Jeremy
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That was it Jeremy! I don’t know what the original setup in the suite was, but when we changed to a Blackmagic 60 sequence rather than Blackmagic 59.94 we could duplicate the problem.
It was interesting to see that even if you change the setup, FCP remembers that “fileXYZ” was originally imported as 60 and deleting the reference in FCP and reimporting it doesn’t break that link. But creating a new project with a 29.97 or 59.94 easy setup will allow you to import teh file correctly.
Thanks again Jeremy, 8 years on FCP and I’ve never seen that problem before.
Cheers
John Christie
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[John Christie] “Thanks again Jeremy, 8 years on FCP and I’ve never seen that problem before.”
Yes, it’s an odd one. Whichever setup you are in when FCP launches is the setup the ‘tags’ the audio file. Nothing that I have seen will change it until you do the little routine posted before.
Glad it worked for you.
Jeremy
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Just curious Jeremy if this is a wav/ broadcast wav issue and if aif files do the same thing?
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[Michael Gissing] “Just curious Jeremy if this is a wav/ broadcast wav issue and if aif files do the same thing? “
Well, I haven’t had an aif file to test it with (from an audio post, that is), but sometimes when you are relinking old media (say restoring a project) and in the process of relinking the audio files say that the media duration has changed. This would explain that error. Next time I get a mix, I’ll test it, but I would say that it will probably happen there as well.
Jeremy
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Thanks for that Jeremy. I often bounce mix files from the audio post room into FCP and have never had that issue with wav or aif but I am working at 25fps.
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[Michael Gissing] “but I am working at 25fps.”
Well aren’t you lucky! 🙂
i have the pleasure of working between 29.97, 23.976, and 59.94 and this issue comes up every once in a while. It doesn’t matter what repslution, all that matters is frame rate in this case. It’s a weird problem.
Jeremy
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