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Synching related but not identical audio tracks
I would like to create a music video containg the full audio on a single track along with four videos of singers, each one singing one part of a 4-part harmony. The lyrics and timing differ for large parts of each clip, but there are segments where lyrics and timing (but not the actual notes – it is 4-part harmony) overlap. Is there a way to force Logic Pro X to focus on one of those several-second long portions of overlap in order to properly synch the audio track and four video tracks? Once synched, i would turn off the audio in the individual video clips and rely solely on the single full audio track (recorded in Logic Pro X). Thank you for any help you can offer.
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20 Replies
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Nope that’s going to be a manual sync most likely.
Noah
FCPWORKS – FCPX Workflow
FCP eXchange – FCPX Workshops -
I was afraid that was the case, thank you for your input, Noah. I did one video so far, it’s doable, but it is quite tedious.
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I had to do a music video in X where they were lipping to playback of the song. That audio was captured quite clearly by camera mics but X refused to sync any of those shots to the actual recording. My guess would be that there were minute, imperceptible differences in playback speed from the device on set vs the actual recording.
What I will do next time… Record the entire song with a camera mic, very cleanly almost like room tone. Use THAT as my audio master song and sync all the shots to it. THEN, manually sync/replace that audio with the real song as a final step.
Maybe something along those lines helps your situation.
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Sounds like a good option, Bret. I came across software online that addressed your problem of slightly varying timing, Plural Eyes, which apparently is effective in tackling variable timing issues. In my case, though, i dont think it would help since it’s not only timing but different lyrics at different points of the song. I was hoping there was some program that let you define, say, a three second segment where in fact there is overlap on the vocals on all four tracks, and synch them from that small fragment.
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If you’re trying to sync new recorded vocals with previous recorded vocals I don’t think that’s gonna happen. Even if it’s the same person there’s just not much chance of the waveform matching specific peaks and valleys.
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Yep- it would be awesome if automatic audio sync were smarter but it’s really just looking for audio waveforms that are more or less identical over time with differences only in relative impedance.
This is like expecting two siblings to have identical fingerprints. Hence you’ll need to use the processor in your head.
Noah
FCPWORKS – FCPX Workflow
FCP eXchange – FCPX Workshops -
What’s mind blowing is the Shazam app. It takes a waveform recorded from a mobile phone mic in a loud noisy restaurant, car, wherever, uploads a sample to the net, compares it to… what, EVERY song ever? Then nearly instantly tells you what song is playing. And it was doing this in 2008 on the original iPhone over 2G! Sometimes X has trouble matching a clip to a clip you tell it to match to.
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Believe it or not, Bret, I did do it — struggled a bit — but it came out fine. I should note these are soley for my own entertainment, and they do not meet professional or any stirct standard of measures… But when i put finishing touches on, i’ll send you a link. I can’t claim that i’ve synched it to milliseconds, but overall the video looks fine. But it did take a lot of tinkering, especially since I’m new to Final Cut Pro, and never took on a multiple video before.
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The processor in my aging head, unfortunately, is in dire need of an upgrade…
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So much fun stuff I’d love to post, but most everything fun I do is always internal corporate stuff.
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