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Audio not staying in sync in FCP….but it does in every other editor
My external recorder mic recordings are not staying in sync with the picture in FCP 7 (or 5)….but they do in every other editor!!!
There is a drift in FCP where they start out good at the clapper, but then after about 7 minutes, they are near 1 second off.
I shot on a Canon D5, converted to Prores LT, kept it at 30fps. Audio matches perfectly in Logic, Soundtrack, Quicktime, & After Effects. Even the bounced files out of Logic will not match up in FCP 7 unless I export as a video file including audio, and then it stays working in FCP.
I’ve tried playing with all the frame rates and sample rates in sequence settings.
My crazy-long work around will be to paste all the perfectly sync’d audio bounces from logic into the video file with quicktime pro….but that will take forever.
I have no idea what’s happening. Please help.
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5 Replies
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Sounds like you may be having an issue with 30 verses 29.97 fps.
Are you in NTSC land?
Try conforming the raw 5D footage to 29.97 in cinema tools before working on the footage.
I have also had audio drift in FCP for no reason at all. Trashing prefs and (tip from AJA tech) zap the PRAM on the mac (hold command-option-P-R on startup wait for 4 dings then let mac start).
Olof Ekbergh
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Ok. Very important.
Delete all of the audio out of your project and timelines, or make a new project. Then put FCP in a true 30.0 easy setup (not 29.97). Then quit fcp then open fcp. Reimport your audio. This audio will now get tagged at 30.0 and should stay in sync.
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[Dave LaRonde] “Jeremy’s advice will ONLY work if all your footage is from that Canon camera. If you plan to use any other NTSC video from any other source, you will be hosed. “
Only if you shot at 30.0 (as he said he kept the 30.0 frame rate). Basically, you choose the easy setup of the frame rate you need. If working 30.0, choose 30.0, 23.976, choose 23.976, 24, choose 24.0. Then the audio will import correctly, after choosing the proerper easy setup, then quitting and reopening FCP. This does not apply only to Canon cameras, sorry.
Jeremy
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Thank you all!
It was the “easy setup” issue. I had to create one at: pro res (LT) at a true 30fps and 44.1 audio.
….and then make sure that was selected in my “easy setup”….then restart….import .
Now lines up perfectly.your advice lead me to the video below, which shows the process.
https://brucesharpe.blogspot.com/2009/06/dslr-dual-system-audio-999-solution.html
Thanks again!
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[Michael Rosen] “your advice lead me to the video below, which shows the process. “
Interesting, never seen that one before. I will definitely link to it, though, as this comes up a lot (and not with Canon cameras, but everything) when people use Dual system audio.
Jeremy
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