At wits end! Export Quicktime yields nonsync audio.

[Andy Mees]

How are you monitoring in FCP, what are your audio and video output paths?
How are you monitoring your exported quicktime movie?

[Tangier Clarke]

From FCP I am monitoring using desktop cinema preview and default built in audio

From Quicktime.app I monitor (the exported quicktime) using the same screen and default built-in audio. Nothing fancy here. I did check how I was monitoring everything – making sure I wasn’t sending audio to my Blackmagic Multibridge Pro.

Tangier

[Tangier Clarke]

Hmmm. I hadn’t thought of that. I’ll use compressor and convert all my audio mixes to AIFF to place in my sequence. I was given all wav files.

Tangier

Tangier

[Tangier Clarke]

That’s just it. The audio (as wav files) is perfectly in sync when I play it back in FCP. It is only after the export that it’s out of sync. This is terribly frustrating. Being that it’s in sync in FCP I wonder if changing the audio files to AIFFs will make any difference.

Tangier

[David Roth weiss]

[Tangier Clarke] “Being that it’s in sync in FCP I wonder if changing the audio files to AIFFs will make any difference. “

In less time than it took to write your post you could have converted one or all WAVs to AIFF. Why not try it and then report back. There’s no destructive part of the process to worry about.

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

POST-PRODUCTION WITHOUT THE USUAL INSANITY ™

A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, Indie Film & Documentary, and Film History & Appreciations forums.

[Tangier Clarke]

Other than the wav vs. aiff issue, I’ve checked all of the settings and they match. The wavs were 48k. We’ll see how it goes.

Tangier

[Tangier Clarke]

I’ve gone through all of the checks and balances (equalizing settings) really even before I posted. The only succesful solution for me was to render all twelve episodes as quicktimes with their audio mix, reimport them and line them up on one timeline and export that as one massive quicktime.

This is the only way everything stayed in sync. Just nesting each episode and placing those nested versions back to back on a timeline only stay in sync during playback in FCP, not on a Quicktime export.

Wish it weren’t this way, but it’s the only solution that worked and allowed my to create a perfect Blu-Ray with sync audio.

Tangier

[Chris Wyatt]

Hi Tangier
are the .WAV files you received in BWAV format?
If they are you can get sync drift as FCP or QuickTime unsuccessfully tries to chase the embedded timestamp sample information.
Heres a few recent COW links to look at:
https://forums.creativecow.net/thread/8/1031111
https://forums.creativecow.net/thread/8/1022132#1022140

Best Regards
Chris Wyatt

[Andy Mees]

this recent blog post by Oliver Peters touches on a possibly associated issue, and he notes a workaround which may be something you can also try:
https://digitalfilms.wordpress.com/2009/11/29/11-more-final-cut-pro-tips/

look to item number 5) Audio files running at the right speed