iamfutureshock
New member
Hey Everyone!
I'm going totally insane with this sound mix, going back and forth with the mixer trying to figure out why our mix stems from the pro-tools session do not sync with our picture...
We are cutting a DVCPro HD 720p24 project. I delivered the sound mixer an OMF and a full-resolution HD Quicktime reference with TC burn-in that matched the sequence 23.98 timecode. When the mix is imported, it is too long to the picture and slowly slips out of sync, being almost 5 seconds behind by the end of the 78 minute film.
The mixer said he is using a 23.98 Pro-Tools session and everything looks in sync for him to our Quicktime reference. But when this VERY SAME (.wav) mix file is imported into FCP and placed into a 23.98 sequence with that VERY SAME quicktime, it becomes too long and slips out of sync. How could that be?
It is possible that the mix has too many "frames" so that played in real time it seems fine, but when forced into a 23.98 cadence, it gets stretched? The same way 24 frames of film becomes slow motion when played at 18 frames per second when the action is the same? Does this have to do with sample rate? I checked, and we're at 48k across the board.
I'm not sure what the next step might be, but I'd appreciate any clues if anyone has come across anything like this before. I've delivered several projects in exactly the same manner and never had a sync issue when lining the mix back up. Just to be fully explicit, the film was shot on an HVX in 720p HD and the sound was recorded internally on the camera. Newest FCP system.
-K.
I'm going totally insane with this sound mix, going back and forth with the mixer trying to figure out why our mix stems from the pro-tools session do not sync with our picture...
We are cutting a DVCPro HD 720p24 project. I delivered the sound mixer an OMF and a full-resolution HD Quicktime reference with TC burn-in that matched the sequence 23.98 timecode. When the mix is imported, it is too long to the picture and slowly slips out of sync, being almost 5 seconds behind by the end of the 78 minute film.
The mixer said he is using a 23.98 Pro-Tools session and everything looks in sync for him to our Quicktime reference. But when this VERY SAME (.wav) mix file is imported into FCP and placed into a 23.98 sequence with that VERY SAME quicktime, it becomes too long and slips out of sync. How could that be?
It is possible that the mix has too many "frames" so that played in real time it seems fine, but when forced into a 23.98 cadence, it gets stretched? The same way 24 frames of film becomes slow motion when played at 18 frames per second when the action is the same? Does this have to do with sample rate? I checked, and we're at 48k across the board.
I'm not sure what the next step might be, but I'd appreciate any clues if anyone has come across anything like this before. I've delivered several projects in exactly the same manner and never had a sync issue when lining the mix back up. Just to be fully explicit, the film was shot on an HVX in 720p HD and the sound was recorded internally on the camera. Newest FCP system.
-K.
