Export QT out of FCP and audio is out of sync
by Joshua Dixon
on
Jul 21, 2009 at 1:46:42 pm
I have shot on a DVX100b in 24p. Captured in Final Cut Pro. I have probably 10 to 15 video tracks.
When I export to quicktime conversion the audio is out of sync.
Do I need to adjust settings or is there too many tracks going? I thought maybe I had the pulldown pattern set up incorrectly. Does it need to be 2:3:3:2 ?
Re: Export QT out of FCP and audio is out of sync by david bogie on Jul 21, 2009 at 2:45:31 pm
When you export, your sequence is flattened to a single video track and two audio tracks. They should be in sync. If they're not, they are being processed in the timeline or exported at different rates. While there are many reasons things drift, they're always user issues, simple misunderstandings in how sequence time, which is absolute, relates to frame rates and sampling rates, which can be modified upstream during ingestion, in the timeline, or downstream on export.
If you can calculate the exact number of frames of offset at, say, 10 minutes, you can expect to get some help on debugging your situation.
but it's still really hard for us to know what you have done wrong without knowing exactly what you've done at every step. That's much easier for you to attempt to debug on your own.
Re: Export QT out of FCP and audio is out of sync by Joshua Dixon on Jul 21, 2009 at 3:11:47 pm
I'm not sure if this might help or not, but when I export the video is playing ahead of the song and then they eventually sync and it gets behind the audio. I do remember also when we were lining up all the tracks with the audio(this is a music video) that it would be perfectly synced on a track and then we would line up the next track above it and the previous would be out of sync. Hope this helps, I'm not at home to where I can get my exact settings to post. Thanks for any help again!
Re: Export QT out of FCP and audio is out of sync by david bogie on Jul 22, 2009 at 4:25:21 pm
Nope, doesn't help.
But it seems like your audio is being imported into your project at an unusual frame rate. Is there a red render bar on the audio line?
Let me rephrase that, you apparently shot yoru video at, say, 24 fps while you were playing your audio on the set. Now you are editing footage that was baked in at 24fps on 30fps media and your sound track is 30fps.
