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Audio offset when exporting to Protools

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Martin Leroy
Audio offset when exporting to Protools
on Aug 8, 2014 at 8:09:39 pm

Hello,

I have trouble exporting my edit from FCPx to Protools. I can find back my clips in Protools, but a weird random offset happens, it's not the good parts of the sounds at all...

I noticed my sounds are interpreted as 60fps inside FCPX and I suspect it comes from there.

Anybody have the same situation?
Is there any way to tell FCP to interpret the audio TC differently?

Many Thanks
martin


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Jeremy Garchow
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 1:37:43 am

Are you using x2pro?


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Martin Leroy
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 7:20:01 am

Yes I am using x2pro.
I also tried Xto7 to make an omf out of FCP7 and I have an offset as well.
Although when I open the .fcpxml in Resolve everything is fine.
Weird.


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Robin S. Kurz
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 11:00:47 am

Maybe try re-exporting an AAF (or even OMF or XML) from Resolve. But it will more than likely be due to the fps discrepancy, yes.


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Martin Leroy
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 11:08:44 am

I tried to export XML from Resolve.
When re-imported in FCP7 I also have an offset, but completely different from the one I have when I don't go through Resolve...

Why is FCPx always displaying sounds TC as 60fps? Is there any way to change that?


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Robin S. Kurz
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 12:15:24 pm

[Martin Leroy] "Why is FCPx always displaying sounds TC as 60fps? "

I wouldn't say "always". That's simply the fps it will in fact been recorded at, i.e. what the recoding device was set to.


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Martin Leroy
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 12:53:02 pm

Audio files are coming straight of a 24fps Protools session.
Whatever sound I try importing in FCPx seems to be interpreted as 60fps.


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Charlie Austin
Re: Audio offset when exporting to Protools
on Aug 10, 2014 at 6:31:19 am

Late to the party but... what's the frame rate of your FCP X project?

-------------------------------------------------------------

~ My FCPX Babbling blog ~
~"It is a poor craftsman who blames his tools."~
~"The function you just attempted is not yet implemented"~


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Jeremy Garchow
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 12:12:13 pm

How was your audio recorded?


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Martin Leroy
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 12:49:02 pm

Audio are wave files coming from a Pro Tools. (48kHz 24bit)
I'm cutting a trailer for a feature film. Audio guys gave me Stems from the master.


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Jeremy Garchow
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 1:37:16 pm

I would have to check some Protools stems when I get back to the office, but I'm pretty sure that the tc is usually read correctly and I know tc is read from sound devices recorders.

If you bring the stems in to fcp7, do you get better tc?

Do you have any retiming in your sequence? Do you get any errors when you make the AAF in x2pro?


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Martin Leroy
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 1:48:30 pm

In FCP7 audio files are interpreted as 30fps
No retiming and the only error in x2pro are two ignored effects. It might come from here?


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Jeremy Garchow
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 2:39:29 pm

No, the ignored effects should have no bearing on this.

I'm not exactly sure where the offset is coming from, I would email x2pro and explain the situation (they also have a support forum).

Another thing to try would be to stamp tc in the wav files with Wave Agent.

Be sure to dupe the stems beforehand in case something goes wrong.

Jeremy


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Martin Leroy
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 2:47:59 pm

I tried the Wave Agent trick and it didn't change anything.
Every single audio file I import in FCPx is 60fps!

Thanks Jeremy!


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Jeremy Garchow
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 5:19:18 pm

I assume you reimported after changing tc?

Make a new library and reimport there. Any difference?

How big is the offset?


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Martin Leroy
Re: Audio offset when exporting to Protools
on Aug 9, 2014 at 10:50:28 pm

Reimport doesn't seem to change anything.
Offset is not too big but quite random.
Am I the only one having sounds playing at 60fps?


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Jeremy Garchow
Re: Audio offset when exporting to Protools
on Aug 10, 2014 at 12:16:07 am

Frame rate, in audio, doesn't really matter in the sense that it doesn't dictate much in terms of speed of playback.

Tc is simply a guide to match to video.

If the offset is random, something weird is happening in the translation.

I'd email x2pro.

Jeremy


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