HELP! Desperate and need immediate help!

curtdusoleil wrote on 5/13/2003, 3:20 AM
I edited a project a few months ago and the final output was to MPEGII and then burned to DVD. Great, no problem with that. Everything looks just the way it should.

Now, I have to make a DV master of the project, and it needs to be done yesterday. But for some reason, when I make a DV render or just a print to tape render, there are portions where the footage from one track has a jerky effect or something and leaves trails kind of thing.

When looking at the clip where the problem is I am perplexed because there are NO TRACK EFFECTS, NO CLIP EFFECTS, NO PAN/CROP EFFECTS on that track or the clip where this is happening. It's just a plain DV avi clip that shouldn't even have to render. The master clip when viewed in the Trimmer does not have this issue. But when I do a prerender on the timeline of that clip it renders 4 parts of it, starting in the middle of the clip and has the jerky effect when done. There shouldn't even be any rendering going on with that clip. If I move the clip slightly to either side, it still renders in the same spot relative to the timeline, so you'd think it was some sort of keyframed track effect... If I add a new video track and move the clip to that track, it STILL PRERENDERS in that spot and has the jerky effect.

If I mute that track and have the one other video track underneath showing and do a prerender, it does not render anything and it's all fine with the footage from the second track. So then I even tried taking the trouble clip and putting on the other track that didn't render, but it still renders on that track the same way.

I've also opened the clip in the trimmer and brought the same portion back in, brand new and it still does it. I've also brought in a totally different portion of the footage, put in on a track right above and it still ends up rendering part of the clip, but not quite the same area. I moved that new piece of footage to a differnt spot on the timeline in it's own track and it still renders the same portion that it did before. Why would it even render any of the clip if it's a straight DV avi clip rendering to straight DV avi? Not all the clips from that same master capture file do that, though. Some work exactly the way they are supposed to and don't render anything when I do a prerender on them. But some have to render a portion of the clip.

WHAT THE HECK IS GOING ON???? It makes no sense at all. Like I said, this needs to be done absolutely as fast as possible and I'm at a total loss. I've tried everything I can think of. It's not composite mode, it's not opacity, it's nothing I can find.


I also just opened a totally new project and placed the whole captured file onto the timeline and did a prerender. It prerendered in perfectly spaced sections. There would be a group of 3 all together and then a space and then a single render and then the same space and then a group of 3, etc.

I noticed the frame rate on that footage is 29.953 as opposed to 29.970. It was shot on an XL1 and I don't understand why it would be anything but 29.970. Is that what is causing the ghosting, etc. and if so, how do I solve the issue. The other footage in the project was shot on a GL2 and has a frame rate of 29.973 and has no issues.

Can anyone please, please please help me?

Comments

Grazie wrote on 5/13/2003, 3:47 AM
NASTY!! - Just for kicks, try saving the project under a different name - something like NASTYTest - yeah? Open it up and play around with that.

When things go awry I've had success with this approach with VF, VV3 and V4. Sometimes things don't behave as they should. I'm running V4 right at the edge of my power - 256ram; 1ghtz BUT separate video drives from the system. I sometimes get "sillinesses" happenning.

If this doesn't cure it - hey you aint messing up the original project - right?

Hold tight others might jump in too!

Grazie
SonyEPM wrote on 5/13/2003, 8:28 AM
29.953 sounds like the problem. What did you capture with?

mikkie wrote on 5/13/2003, 9:40 AM
Second the 29.953...

If you can't track down the capture prob, have you tried just rendering that clip to 29.97 (would supersampling help?) - setting the clip's properties to 29.97 instead of timecode in file - changing the header info for the clip (using whatever util) -

FWIW, the mpg2 encoding probably glossed over this (assuming orig file etc.) as it more or less looks at change and motion over time with the player smoothing things out. If you can't get anything else to work, what about transcoding that prob. scene from the mpg2 to DV?
curtdusoleil wrote on 5/13/2003, 11:44 AM
First, I had already saved under a different name and re-opened the project. Still the same.

I used Vegas to capture, though I may have used a different camera than the XL1 it was shot on.

Last, could you explain, mikkie, what you're talking about. I don't know about this stuff you're mentioning (supersampling) or changing the header info for the clip. How would I do that? What programs would do that?

I suppose in the long run I could go from the MPEGII back to DV, but there will be quality loss that way.