Trailing problem in Vegas Video

william_tur wrote on 2/6/2002, 11:11 AM
Certain clips in my project trail. What I mean is this: The Character Ben walks into a room and it appears as if there are two of him one slightly ahead of the other, and the one in front is almost transparent, but clearly visable.

Now this problem is in a couple of clips throughout the timeline, but I checked; it's not on the original copy, or on the copy uploaded onto the computer. Even stranger is that if I move the clip to a different part of the timeline, it is fine, but another one is affected.

How is this possible, and more importantly, how do I solve it?

Comments

Chienworks wrote on 2/6/2002, 2:40 PM
It sounds to me like an issue with the field order. If you get the fields out of order, you'll see the second 60th of a second of your video before the first, and so on down through the clip. Since the fields are recorded a 60th of a second after each other instead of simultaneously, you'll be seeing half the picture before it should be shown and the other half afterwards. This results in a double ghosted image.

Right-mouse-button click on the clip you're having trouble with to bring up the Properties dialog, click on the Media tab, and look at the Field order: settting. If this says Lower field first (the default) change it to Upper field first (or vice versa). If this doesn't help, try setting it to None (Progressive scan). If that still doesn't help, go back to the Video Event tab and the Resample and Apply interlace filter switches. Some combination of the above should fix or lessen the problem.
william_tur wrote on 2/6/2002, 4:01 PM
Chienworks, you are my new best friend. It's working!!!!!!
fongaboo wrote on 2/7/2002, 6:49 AM
This sounds like the 'shimmying effect' I posted about extensively before.. Gonna try it too..
Chienworks wrote on 2/7/2002, 9:10 AM
Cool. I'm glad it's helping.

I am a bit concerned about the fact that when you move clips around it changes. Please check something for me. Under Options, do you have "Quantize to frames" turned on? This will make sure all your clips line up at frame boundries. If this is off, then you might be getting the fields out of whack just by dragging the clip around.
william_tur wrote on 2/7/2002, 11:55 AM
I can' find the option to do it. 'Quantiize frames isn't under the main Options. Is there another?
SonyEPM wrote on 2/7/2002, 1:11 PM
If you are running Vegas 2, there is no quantize to frames option, and no easy way to ensure that everything is aligned correctly. (This is the reason we put quantize in version 3).
fongaboo wrote on 2/10/2002, 10:59 PM
So could SF patch VV3 such that when you turn on Quantize frames in a project that was created when it was off, it slides the events right or left accordingly? Right now when you do so it quantizes the events such that they are always offset. How about it?
Cheesehole wrote on 2/11/2002, 12:00 PM
this would be better implemented as a Tools | Quantize Events to Frames type of thing. this would work much like quantizing works in the MIDI world. it would go through your selection and fix each event. this way if you ever change the framerate of a project, you can re-quantize your events.
fongaboo wrote on 2/11/2002, 9:33 PM
This would be great. Do we have any chance of getting this fixed in an update SF? I will have to shelve these projects on a hard drive for the time being because I have no way to repair them right now. Thank god it was an amateur endeavor or I'd be screwed. I can provide the example project files if it would help anything.