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Edit to Tape Frame Accuracy
We’ve been having strange issues laying to tape with 5.0.4. The tape is pre-rolling 3 seconds and 14, 15 or 16 frames from where it should. So the video gets laid back 3 seconds and 14, 15 or 16 frames late.
I found that when we see this problem, I can hit “go to in” and even though it is properly typed in, the deck cues to the wrong spot. At this point, we can just re-type the in point into the edit to tape window, hit “go to in” again, and the problem is fixed. Tape lay back is then accurate.
We’ve had a host of other issues where we are 1 or 2 frames off. Not on bars, but on all other video which originates from the san. I don’t believe these are related to the issue above.
Any ideas on what could be causing this?
kk
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3 Replies
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Hi Keith,
I have noticed that when you go to “edit to tape” the default time for the tape is Drop Frame. Are you using Non Drop Timecode? If you play your tape first so it recognizes the type of time code that’s present on the tape. You should get the proper in point when you enter it. This is basicly what you are doing when it doesn’t work and you retype the in point in again.
Good Luck!
Billy Stuart
Post Supervisor
National Boston Video
617.734.4800 -
We only use drop frame. Our tape stock is blacked and coded drop frame. First thing I assumed was that the editors had messed with their settings and changed the timeline to non drop, but it wasn’t the case.
btw, we’ve seen this both on the HD and SD side.
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Could that be your playback offset? You can change them in the device control preset editor.
What you might try is, use the TC reader filter in final cut to make a blank video clip with a timecode window on it, then render this and play it out to tape. Then you could just shuttle through the tape and see if there is a consistent offset between the actual tape timecode and the timecode window rendered on the video, and calibrate your system to match that.
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