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Capture DV with 12-bit audio = out of sync?
I’m capturing from a DV tape where the audio is recorded in 12-bit.
FCP tells me that my captured footage does not match my settings.
Not sure, but will it be a problem if I just let FCP adjust the sequence settings with my DV footage?
I cannot find any capture preset with 12-bit audio, just 16-bit.
(I have changed the camera audio setup so it now will record in 16-bit).Thank you for your help,
Niklas
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9 Replies
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You’ll have to create a custom preset to capture audio with a sample rate of 32k. Once that’s done, I would bring it into compressor to have it resampled to 48k. If you let FCP do it, it will be a pain since it will have to be constantly rendered, and you might have sync issues. 12-bit audio is recorded at 32k and 16-bit is recorded at 48k. If you record mini-DV in LP mode, it will typically default to 12-bit audio.
Richard Sanchez
North Hollywood, CA“We are the facilitators of our own creative evolution.” – Bill Hicks
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Do you mean that I should create the custom capture preset in FCP?
Have never done that…how?
And should I bring the original DV footage into Compressor and resample, or just the exported AIFF?
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I think I found it – now I have created a custom preset in FCP with 32 kHz audio instead of 48. (Didn’t know that 12-bit was equal to 32 kHz).
Hopefully things will stay in sync now. 🙂
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For the sake of simplicity, you could bring the entire quicktime file into Compressor. Under the Video pulldown in the Inspector window, set it to “Pass Through” so that it doesn’t recompress your video, and you want to resample your audio to 48k.
To create a custom preset, go into the Audio / Video Setting and duplicate the preset for DV. Rename it to something you’ll remember, like DV 32k or something. Then in that preset, set it to 32k.
Richard Sanchez
North Hollywood, CA“We are the facilitators of our own creative evolution.” – Bill Hicks
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Richard,
Thank you very much for your help – but I have never worked with compressor bypassing video (I mainly use Compressor to encode AIFF to AC-3).
I have loaded my DV footage and selected AIFF 16-bit 48 kHz stereo as target.
But I cannot find the “bypass video” anywhere in the Inspector. Neither for the .mov or target?
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Wau Richard thanks for the Info regarding Compressor. I had a similar problem until I became aware of the possiblity of creating a setup with 32khz. That part works flawlessly for me. I was how ever not aware of the possiblility of upscaling the Audio from 32khz to 48khz via compressor. I will definitly use that tip when I need to move my finished home project to a DVD.
Let the machine work for you. Not you for the machine
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Looks like I was mistaken. You can set the video to “pass-through” like you can with the audio, so what you can do is bring your clip into compressor and use one of the audio templates.
And cut the resulting AIF audio file underneath your clip. You could link them with the cmd-L shortcut.
Richard Sanchez
North Hollywood, CA“We are the facilitators of our own creative evolution.” – Bill Hicks
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Great! Actually your screenshot’s what I was thinking of, but I got a bit confused about the “bypass” stuff.
I’ll set Compressor to work tonight then. 🙂
Again, thank you!
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Anytime!
Richard Sanchez
North Hollywood, CA“We are the facilitators of our own creative evolution.” – Bill Hicks
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