When digitising video gets stuck, then pushes video and audio out of sync

i am digitising from a deck rack, which is hooked up via a patch bay, with 2 J30-1 digi decks and 1 HDV deck. These are all connectable to my mac via some patch cables.
Recently when digitising, really only over the past two days, no matter which deck or tape format I am coming from, the video in my capture window gets stuck on a frame, and ends up capturing this frame until the tape jolts itself out of this frame.
When I review this clip, the video frame will stick, and then the audio is out of sync with it.
This happens on both digi's and DVCams, I am confused as to why this is happening, haven't seen it before.
Any ideas much appreciated
Lianne

not positive, but sounds like a hardware issue.... try going from source to machine and eliminate hardware..if it works...you've got a hardware issue.
i'd test each deck direct. then reconnect it to patchbay...much more intensive, but at least youd eliminate many issues. it might even be a bad cable. i had a similar experience with a bad firewire cable...so maybe you start with the cable running to your machine.....for me i'd go direct and eliminate issues step by step source to capture.

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When digitising video gets stuck, then pushes video and audio out of sync

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