I have had several issues with FCP 7. The issue of audio/video out of sync that I have had is not with aligning the clips (as someone suggested using plural eyes), it was in FCPs alignment after “I” had PERFECTLY set the “In” points. I even tried aligning using “out” points.
The problem (for me) exists in the encoded footage. FCP was obviosly having issues with it. It could aligned the other 2 cams perfectly (or vise versa). Whatever the case, 2 of the 3 cams would align but 1 would not (in multicam). I can only assume the footage from the 1 cam is/was corrupted somehow. Whether it’s a bug or not, needed to be remedied.
Note: Something I have noticed is that FCP 7 makes it’s multiclip in alphabetical order according to the clips names. IRONICALLY the clip that I had problems with started with a “B”, which meant, it was going to be the name of the multiclip. Not sure how all that works but, when I lay the multiclip in timeline, it starts off with the audio and video from the messed up clip. Yes, I can go in to the multicam menu and change which audio and video I want displayed but, that didn’t seem to make a difference.
***SOLUTION***
Lay the footage that will not sync in a NEW Timeline.
Export footage with same compression (I renamed it with a name that wouldn’t be used by multiclip to aligned first example “TEST B2”.
Import clip from wherever you exported to.
Realign clips using NEW exported clip.
This fixed my problem. Hope it prevents someone from pulling all their hair out like me! Smiles, Mic