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continuous rotation
Here’s the background (you can skip to the question below):
I’m using a rotating graphic in the background of a series of shots. The way I’m doing it right now, is to set keyframes at the start and end of the clip and then drag one of the keyframes in the velocity line until I have a velocity of 9 degrees/second. This is fine, but when I extend or shorten the clips, I often have to go in and monkey with the keyframes and velocity again.Here’s the question:
Is there any way to just set a rotation velocity for an object and have it spin continuously at that velocity no matter how much you extend or shorten the clip? -
5 Replies
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I don’t think so. You could put a keyframe every 40 seconds so that if you did pull out the tail you could just fix the last part. But I can’t think of a way to set the speed of the rotation.
Steven
https://www.stevengotz.com -
Use a nested sequence. Create a new sequence with the clip doing the rotation you want for some time that will almost certainly be enough and then some, and then bring that sequence out of the project window onto your main timeline. You can now trim the clip and the rotation should not change…though frankly, if you have keyframes set and trim the clip on the timeline, the keyframes should not be moving…
TimK,
Director,
Kolb Productions,Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net -
You could create a short loopable clip where the beginning and ending keyframes match. Save it as a dv.avi and then drop as many iterations on the timeline as you need.
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You know, when you say it like that, it is just so damned obvious. Duh! Geez. Makes me glad that there are more than just a few of us helping out around here.
Steven
https://www.stevengotz.com -
[mike velte] “You could create a short loopable clip where the beginning and ending keyframes match. Save it as a dv.avi and then drop as many iterations on the timeline as you need.”
Well…yes, but do keep in mind that if the beginning and ending keyframes are identical, the animation will appear to pause at every repeat point. To loop, you would want the “second to the last” frame to be the last frame of the clip, with the first frame of the next clip being the “home” position in order to have fluid motion.
You can position the ending keyframe outside of the clip trim to do this, or you can trim a frame off the end of the clip after setting the keyframes.
The reason I suggested a nested sequence was that once you have a number of fluid rotations set up with one set of key frames, it strictly becomes a matter of trimming one clip.
It just depends what makes the job faster for you really…
TimK,
Director,
Kolb Productions,Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net
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