Did you ever get a solid answer to this problem? If so, tell me the answer as we have had serious problems with audio sync when it comes to Blackmagic Design and VHS analog tapes remaining in sync on playback. It is so bad that we stripped everything software wise from our Mac Pro 8 core so that only the system software and Blackmagic Design hardware and drivers are all that is in the machine. Using only their Deck Control software for capture, everything appears in sync on the capture. Finish capture and playback with QT Pro and sync is gone. We have spoken with BMD’s tech support more than 10 times. Still no resolve. We’ve searched internet boards to find an answer, but no luck.
To add insult to injury, we still have a POS Sony DVC 100 firewire capture box and you guessed it, it works flawlessly every time. So why does a $100 POS work fabulous and my $2000 BMD interface continue to disappoint?
Don’t get me started on HDMI capture issues either, LOL.
Matt @ Post Pro