I have 4 minutes footage in 30p sequence (not 29.97!) ProRes from Mark II, and I was using a separate recorder for sound (tascam dr-100). Everything is perfect, but then I'm export a piece of sound (I send it to sound designer) in WAV or AIF (48khz 24 bit) using QuickTime compression and put it back in just the same sequence it became 9 frames shorter.
I'm really crazy bout it, where is the problem? Help!