Syncing audio with video shot at 23.97fps

You have just described the classic 24 fps vs 23.978 fps problem.

If your video was 24 fps and you have audio at 23.976 - (or vice versa) you end up with a .01% discrepancy.

The answer is to have both items at the same frame rate and have FCP interpret them correctly.

Of course, it is still possible to have drift without the camera and audio recorder locked together.

x

Is the video 23.98 or 24?

What format did you convert it to before bringing it into FCP?

Still, unless you locked the audio and video together via TC, you are in for a fun time.

x

This may not be satisfactory but it usually works.

Assuming the audio and video clips are started on a clapper, find the exact length of your video clip. Write that down.
Open Speed Adjust on the audio clip and enter the time you wrote down. Render and then link.

If you do this for each clip in a separate sequence you can export the properly synced clips as self-contained media.

Hope you get it sorted, there is probably an easier and much more efficient way to do this. Back when I was shooting film, the speed of the tape deck sometimes drifted (because the producer was too cheap to get a crystal locked deck or Nagra). We'd spend many frustrating hours syncing by inserting cutaways and tiny chips of blank tape.

bogiesan

There is a product "PluralEyes" that many in your circumstance rave about solving the same problem.

It has a 30 day trial and can be found at the link below
http://www.singularsoftware.com/pluraleyes.html