Lost Data Code

taliesin wrote on 9/8/2002, 6:44 PM
There's something strange when printing to tape:

I captured a dv clip with VV. Did no changes to it. Printed it to tape from within the capture window and printed it to tape after I put it into the timeline.

Now the first version (printed out using the capture window) keeps the original data-code (generated when shooting the footage) but the second version (out of the timeline) lost that original data-code and generated a new one instead.

I ensured there was no rendering. Why does that happen?
Isn't there any chance to keep the original data-code when printing to tape out of the timeline?

Any help and hint appreciated.

Marco

Comments

SonyEPM wrote on 9/9/2002, 10:44 AM
Sorry- the original DV date/time stamp and timecode is not retained during a render or print to tape from the timeline.
SonyDennis wrote on 9/9/2002, 12:36 PM
...and this is for a reason. If you bring in many disparate clips, and then render some transitions, and then print to tape, if you ever tried to capture that segment with scene detection, you'd get a new scene for every clip, and one for each transition. Not ideal.
///d@
taliesin wrote on 9/9/2002, 2:12 PM
Thank you both for the quick response!

Marco
mibanezm wrote on 11/1/2002, 3:06 AM
I think it should be selectable.

Sometimes, I prefer this default behavior (generating new date/time at render time). However, it would be desirable to preserve the original date and time information in many situations (videos with no transitions, and other situations where is important to preserve the original date/time info).

Could be this feature added in a future version? For example, as a checkbox in the "Print Video to DV tape" dialog. It would be useful for many users.

Thank you
wcoxe1 wrote on 11/1/2002, 7:21 PM
I am certainly glad to know about this. I was just about to mess up really big in advising on how to use DV tape as evidence in a trial. If the time code is changed everything is absolutely USELESS. In fact, it is WORSE than useless, it smacks of evidence tampering or deceit.

What is the best way to GUARANTEE preservation of the original timecodes if we need them?
Tyler.Durden wrote on 11/1/2002, 8:23 PM
You might consider burning the code in the image... often frame code is burned-in small and right up to the blanking, so it is not seen on most sets, but visible using underscan.

Regards, MPH

wcoxe1 wrote on 11/2/2002, 10:37 PM
The evidence was shot on a camcorder which doesn't "Burn" the codes into the edge of the image. It has only the original capture codes. Adding anything that changes the actual image would be considered tampering, and likely would cause evidentiary problems.

I need to preserve the original codes. There is problem enough getting all sides and the courts to allow just simple cuts to eleminate stuff that has nothing to do with the case, it just happens to be on the same tape. So, you can see that modifying the tapes would cause really nasty reprecussions.
Tyler.Durden wrote on 11/2/2002, 11:46 PM
While it may be construed as tampering, burning in the TC might be the best way to ensure that date/time is not dissociated from image. Once it's in there it cannot be easily taken out. (The original camera master can always be referred-to for validation.) A tape without burn-in can easily have Date/Time altered just by dubbing to another tape. (hence this discussion)

In light of the original cam not recording the Date/Time, it might be an easy way to keep a bad situation from getting worse.

Regards, MPH
mibanezm wrote on 11/5/2002, 2:42 PM
I have recently tested other products that compete with VV, and:

-Adobe Premiere 6.x
-Pinnacle Studio 7

Both support data code preservation, and preserve original DV date and time codes when printing on DV.

Best regards.