Final Cut Pro Audio Tip #2 – True 24fps sync issues

Jun 19, 2009 Sound Advice

This is another bug, which can cause issues when trying to layback audio from your audio DAW into FCP. FCP bases audio pullup/down on it’s CAPTURE settings, NOT it’s sequence settings.

What does this mean? If you are working on a TRUE 24fps project (not 24p, 23.976, or 23.98) such as animation, AND your capture settings are set to 29.97 or 23.98, then FCP will pull UP (convert the sample rate), and the file will drift out of sync.  Conversely, if you are in PAL land and your capture settings are 25 and you are working on a 29.97, or 23.98 sequence, FCP will pull DOWN the audio, and again it will drift out of sync.

Notice the redline above the sequence in the pic above? That’s a dead giveaway that FCP is sample rate converting. Use the NO RT function in the sequence menu to check. The workaround solution is the save the audio as an Audio Only Quicktime Movie at the correct frame rate, and import THAT into FCP.

Tags: 24fps, bug, FCP, Sound Advice, sync issue

Sound Advice

Jun 17, 2009 Just Stuff

I’ve added a new category and menu item to the site -”Sound Advice”. Sorry about the bad pun, but I really couldn’t think of a better one! In here I’ll put solutions I’ve found for Filmmakers and Sound People about everything from workflow issues, to known bugs in software. My first post below, is on the (in)famous 23.976 OMF problem in FCP. More to come…

Tags: bugs, solutions, Sound Advice, workflow