Audio drifts over time
by victor kohler
on
Sep 4, 2008 at 3:24:00 pm
Hi,
im having an issue with audio drifting over time. At the beginning of my sequence the audio syncs up with the waveform but later what i hear and what i see in the waveform is totaly different.
The audio im using is from the composers and bounced from Apple Logic.
Im editing in Apple Prores HQ with 48 kHz audio converted from 44.1 kHz in an 48 kHz sequence. The project is quite big and im working with multiple projects and sequences open. I tried reconecting the audio but that doesnt work. Any idea what causes this problem?
My system is a Mac Pro 2 x 2,66 GHz Dual Core Intel Xeon with 12 GB RAM
Black Magic HD Extreme
Im working from two internal and two external drives. Both my audiofiles and my projectfiles are on my internal ones. The material is spread out over all four drives.
Re: Audio drifts over time by Steven Gonzales on Sep 4, 2008 at 8:23:26 pm
I'd try taking one of your original 44.1 kHz files, and open it with Quicktime, then export as 48 kHz (converting there instead of an FCP sequence), and see if syncing that to it's video makes a difference with drift.
Also check the bit rate of the originals (how many bits are in the audio samples, usually 16 or 24) and see if that remained consistent throughout the workflow.
