DV Scene Detect

JonnyMac wrote on 6/6/2003, 1:58 PM

Is the automatic scene detection based on the tape time code, or is time-of-day (when I shoot) information also stored and sent in the stream that can be used for detection. I've not used auto scene detection before, but would like to start and am wondering if pre-striping tapes (my habit) will have a negative impact.

Comments

jetdv wrote on 6/6/2003, 2:06 PM

That would be:

Time of Day

It uses jumps in the Date/Time to determine scene changes.

johnmeyer wrote on 6/6/2003, 7:06 PM

Any interruption in the time recorded on the tape will cause a new scene to be created.

Pre-striping isn't really necessary (as far as I know) unless you truly have to absolutely, positively ensure that you have no interruption in your timecode. I'd be interested, however, in other people's opinions on the necessity of pre-striping.

JonnyMac wrote on 6/6/2003, 7:27 PM

I may stop striping my DV tapes now that I understand how Vegas's auto scene detection works (thanks Edward). I did it before so I could advance forward a few seconds between takes and always have a black spot that would be easy to find while logging clips.

jetdv wrote on 6/6/2003, 10:14 PM

We never pre-stripe. I figure it is a waste of time on the camera heads that I'd rather use taping events.

riredale wrote on 6/7/2003, 10:30 AM

This topic was fiercely debated over on the Studio7 forum a couple of years ago. I can't remember all the details, but one discussion centered on the fact that a camera recording a long take over a prestriped tape would drift slightly from the previous timing, and where it stopped there would be an out-of-sync situation anyway. Or something like that. Something bad, in any event.

whitneyd wrote on 6/8/2003, 11:29 PM

Is there a scene detection based on content such as the one used by Scenalyzer for Pinnacle Studio 8?

whitneyd wrote on 6/8/2003, 11:45 PM

Nope.......

wobblyboy wrote on 6/9/2003, 1:45 AM

The only advantage I can see is if you want to go through your tape and mark regions for batch capture. I always thought that I could just capture as I went along just as fast.