Hey Richard,
Thanks for writing. Yes I’ve been back and forth with the mixer and neither of us can figure out whats going on. His pro-tools session was 23.98 as was the quicktime I gave him that he used in the session. It was also the editing time base, so in theory it should all match up. I only put the files into a 29.97 drop frame sequence to check against real time, since 23.98 timecode will always be slow to real time. There is a 2-pop at the head and a tail pop as well. I can tell the sync drifts because the 2-pop lines up but the tail pop does not (in addition to the obvious out of sync dialog in the film). Any clues?