That explains it. I would speculate that the anchor point is an absolute time code number based on the first clip the effect was dropped on. If it wasn't I would think that there would be issues related to decomposing, although this is handled with regular clips so maybe not. I often get motion effects where the anchor point is outside the actual range of the shot. I figure that is because a shot got trimmed after it was cut into the timelinel.
Now that I look at the effects palette I see my basic mistake was dropping a regular timewarp and then adding -100%. I hadn't noticed the "reverse motion elsewhere in the list. More has definitely been revealed to me!!! And there is was staring me in the face all these years, guess I wasn't staring back hard enough.
---In Avid-L2@yahoogroups.com, <mbrock321@...> wrote :
If I apply the reverse motion timewarp from the effect palette, it will reverse the frames of the clip in my timeline, as I'd hope.
After applying the effect, I can drag the motion effect icon from the motion effect editor into a bin to make a template that can be drag'n'dropped onto other clips in the timeline, but results are inconsistent when I do that.
There are 2 cases. If I remove the existing timewarp from my timeline, then drop the template from the bin onto the same clip it came from, it will work the same as before and reverse the existing frames. If I drop the template onto a different timeline clip than it came from, it gives a different, incorrect result. I would speculate that the template in the bin remembers the anchor frame, which is perhaps saved as a simple framecount from the beginning of the clip. In that case, it would only work consistently with clips that had the same length.
Based on this test, I would avoid using a bin template to apply a reverse-motion timewarp.
Cheers,
--Michael Brockington
Thanks for the suggestion, John.
I guess my point is that if I open the motion effect editor, it means I want to edit a motion effect -- there's nothing else I can do with that interface. So why not automatically add a timewarp to the active clip if there isn't one there already when I open that tool? Or at least make it easy to add the effect from the palette I just opened and made active.
BTW, I think I do get the behaviour you say you want when applying a -100% reverse-motion timewarp -- i.e. it just reverse the frames currently in the timeline. If you normally apply it from a bin, I'd suggest applying it from the effect palette and see if you get a different result. I remember seeing what I considered weird behaviour applying timewarp templates from a bin in the past.
Cheers,
--Michael
Posted by: bigfish@pacbell.net
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