Comments

salad wrote on 9/20/2002, 5:57 PM
Not sure, but can you zoom in a little just where the "freezes" occur and see if there is a "indent" mark on the upper edge of the video clip? This is where the clip would start to LOOP if looping was enabled. If looping is disabled, the clip will repeat the last frame for as long as you would care to stretch it. This is assuming that you have really reached the last frame of the clip. Otherwise....not sure why it would do that.
Somethimes, it's hard to see those indentations when a clips edge is pulled too far into a xfade. The clip to the right covers up the mark.
SonyEPM wrote on 9/20/2002, 8:54 PM
salad- I bet you are correct. Good sleuthing!
Carel wrote on 9/22/2002, 7:43 PM
Thanks for that suggestion. I found a little "indent", but only on the next clip. Neither of the two clips were at their first/last frame. After I had posted my question, I rendered again, but this time to disk. Everything was normal. I have the impression it happened during pre-render (for render to tape VV pre-renders, but not for render to disk). This was the first time I had rendered to tape. Are there some critical settings I should check to make pre-render behave better?
salad wrote on 9/22/2002, 9:50 PM
I (personally)don't save my pre-renders. I only use them to check stuff out. I suppose you could make sure your pre-render settings match your final renderings.
If you see an indent mark, then that clip is going to start to loop or repeat frames, depending on your pref's.
Do you have a velocity envelope applied on the track?
Carel wrote on 9/23/2002, 12:17 AM
The pre-render was not my doing: render to tape pre-renders cross-fades etc. automatically. Untill now I was rendering to disk. Just wanted to try render to tape because it automatically adds a color bar and tone leader plus black trailer and I have not seen that option when printing a previously rendered file to tape with vidcap. Maybe I should make a habit of adding it to the timeline from the Text/Background tab.

I did not have a velocity envelope applied. Just simple cross-fades. From your remarks I am guessing you always render to disk? Maybe that is the way I should keep doing it. I will also do some tests with different settings with looping on/off to get a feel for what is going on. Thanks for your help.
salad wrote on 9/23/2002, 8:02 AM
Yeah, just keep playing and testing, you'll get to the bottom of it. 2 of 15 isn't bad, so it must be something simple.
After doing previews of pre-renders, I like to "clean up all pre-renders", defrag, reboot, let the HD's settle down, open VV and play the project thru one more time before rendering, hit render and walk away....sort of.
Sorry I wasn't much help, but it's fun to try.

It took me awhile to really look for the indent marks. I had output to tape once, and discovered a couple areas at dissolves that showed what looked like a "phantom frame", that did not show up during normal previews during editing, probly due to frame rate drop at complex areas like fades, fx, etc.
I discovered that I had looping enabled, and had dragged the edge of the clip too far, not knowing where to look for the indent. Now I'm more careful.

Have Fun!