Glitch affecting first frame

riredale wrote on 10/25/2002, 6:27 PM

I'm just finishing up doing my first major (75min) video project with VV3. I've begun to notice an odd quirk: if I go to set the "Event FX" on any particular clip on my timeline, then from that point on, that clip has a corrupted first frame. It's not corrupted with a bad image; rather, the first frame is way out of sequence with succeeding frames. This gives the appearance of a visible "glitch" when the movie plays. It doesn't happen to clips that have not been modified via FX.

A second odd quirk, perhaps related, is that when I go into that clip's FX event timeline, I discover that the diamond at the extreme left side of the timeline doesn't represent the first frame of my clip. Rather, it represents the last frame of the previous clip! If I set that diamond to perform the particular FX I have in mind, the clip does indeed exhibit that FX, but it still seems very strange to me that the beginning of the FX timeline is actually the last frame of the previous clip.

Have I set something wrong? Help! It's a pain to try to get rid of the corrupted first frame manually.

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Tyler.Durden wrote on 10/30/2002, 4:53 PM

OK SoFo,

I take a Vegas captured clip (dur. 13:15) into the TL.

I split it into ten events, and renamed each 1-10 to keep track.

I rearranged the order to: 1,9,3,5,4,7,6,8,2,10.

#7 shows the fade and #4 shows an image in the preview when I Ctrl-alt-arrow to the tail of the event (following event is backed away), unlike any other event.

HTH, MPH

Tyler.Durden wrote on 10/30/2002, 5:03 PM

Hi,

If I switch #5 and #4, problem gone.

If I switch #3 and #4, problem follows #4, creating a fade on #5.

new addition:

If I move #4 down the line, the issue follows #4 until I get to next-to-last and then the issue jumps to clip #2 (new order: 1,9,3,5,7,8,6,2,4,10). Now #2 has the funny tail causing a fade on #4.

OK, you're it...

MPH

mph

SonyEPM wrote on 10/31/2002, 12:04 PM

riredale, can you please send me a .veg file and some screenshots?

drdropout@sonicfoundry.com

thanks.

riredale wrote on 10/31/2002, 1:01 PM

Will do it today.

The ideal would be to send the avis too. I'll see if I can replicate the problem with really short files.

SonyEPM wrote on 11/13/2002, 10:57 AM

I've got a repro on this using your media. Somehow, you got the edit in a non-quantized state. Confirm QTF is on, drag the outgoing event's edge back a frame, then move it forward to the orginal (but now correctly frame quantized) position and all should be well.

riredale wrote on 11/13/2002, 11:54 AM

Hate to throw a curve, but I have never had the "Quantize to Frame" feature turned off. Somehow, it's doing it to itself.

I can easily reproduce this problem by taking any avi to the timeline, splitting it up into 5 clips, and then move the internal clips around like a shell game. Eventually, one of the clips will suddenly sport a green triangle, even though it shouldn't.

Second quirk:
I am going over the final version of a 1 hour 20 minute project, and am about to tear my hair out. The whole thing had been done in stages, with about 6 chapters making up the finished project. When I finish a chapter, I render the veg file to a "chapter" avi, and now that I am finished I assemble the chapter avis as a new "final assembly" veg file, and print to tape from that.

After doing a careful final viewing, I have discovered two "glitches" so far. It's a repeat of the problem I first mentioned a few weeks ago--the very first frame of a clip is actually the LAST frame of that clip. How the last frame gets to the first frame position I have no idea. All my edits have been simple cuts and trims. If I go to the veg file timeline, the clips look completely normal, and the first frame is normal, but when I generate an avi, VV3 is somehow popping in a frame out of sequence.

All this could be just Operator Error, but how? It seems to me that I would have to work pretty hard to somehow get the last frame of a clip into the first frame position intentionally.

Erk wrote on 11/14/2002, 3:51 PM

Riredale,

I think I've experienced the first frame of an event tacked on to the end (using VV3.0c) just as you've described. I also keep quantize to frames always on. I haven't detected a pattern yet; usually I've just shrugged it off and chopped off that weird frame. I'm also (occassionaly?) seeing those other 2 glitches you mentioned (the fade thing and the keyframe showing the previous event). I haven't done the homework and pattern-finding you and Marty have done though. I'll see what I can detect on my end.

G