Greetings to all.
I'm assisting on a film and the audio round trip to Pro Tools isn't syncing. I'm hoping someone has some insight into the problem. Which is:
The film is 24 fps. Audio 48k 16 bit out. 48k 24 bit back.
To isolate the problem, we created 3, 5 and 7 minute clips. Each clip begins with a standard Cinema Tools countdown with a one frame beep at the 2. Following the countdown is black with a time code. After the allotted time of the clip, there's another 1 frame 2 with a one frame beep.
We sent this off to the sound designer who, in Pro Tools, matched the beeps in his set up, then sent the audio file back.
When I line up the files we sent with the files he sent in After Effects, they match perfectly.
In FCP, however, they're out of sync –
In the 3 minute clip, the sound guy's beep sounds 5 frames before the beep at the end
In the 5 minute clip, the sound guy's beep sounds 8 frames before the beep at the end.
In the 7 minute clip, the sound guy's beep sounds 11 frames before the beep at the end.
Not only that, but the waveform appears visually in the right place in the timeline of the 5 and 7 minute clips, while the actual audio sounds 8 and 11 frames earlier, as noted above.
Does anyone have a clue what can be done to fix this problem? We can't sync the film until we resolve this issue.
Many thanks in advance.
On our end:
FCP 7.0.3
QT 7.6.6 Pro
AE 11.0.0.378
iMac 10.7.4
Jonathan
JONATHAN PENZNER
SUNDANCE/REALTIME
VIDEO EDITING • MOTION GRAPHICS • DESIGN
| STUDIO 626 345-0285 |
| CELL 818 321-2890 |
