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I forgot how to adjust keyframes proportionately
I saw in a tutorial (Andrew’s or Aharon’s) how to select a group of keyframes and adjust them so they retain their spacing. Not move them down the timeline, but rather, keep them the same percentage apart from one another.
I really can’t seem to explain this well, can I?
I have a keyframe at 0 frames, 1 second, and 2 seconds. Instead, I want to select all three and adjust them so they’re at 0, 15 frames, and 1 second. Now, I obviously know how to do that manually, but I saw a trick to grabbing them all and compressing them proportionately by dragging the mouse.
I tried all the combinations of CTRL, ALT, and SHIFT I could.
Any hints, please?
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7 Replies
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Select them, hold Alt (option) and drag the last one.
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What you want to do is make ‘roving keyframes’…you need 3 or more KFs; select them all and then right/option click and select ‘rove across time’. That should do the trick. I think there are certain types of keyframes this doesn’t work on, but can’t remember which.
Hope that helps.
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Ooohh…good trick, didn’t know that one. So in what situation would it be better to use roving KFs instead then? You solution seems alot more flexible…
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[Don Sciore] “Select them, hold Alt (option) and drag the last one.”
Damn, I thought for sure I had tried that. But it works now. Thanks!
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[jimmy bee] “So in what situation would it be better to use roving KFs instead then? “
If you have more than 3 keyframes (a beginning, middle and end) then Roving Keyframes will change the position of the keyframes relative to each other in order to make the property’s rate of change constant.
For example, if you had 4 position keyframes:
Keyframe 1 at 00;00;00 with a value of [0,240]
Keyframe 2 at 00;01;00 with a value of [180,240]
Keyframe 3 at 00;03;00 with a value of [360, 240]
Keyframe 4 at 00;09;00 with a value of [540, 240]
If you changed keyframe 2 and 3 to roving keyframes it would change where they lie on the timeline to 03;00 and 06;00 respectively in order to make the rate of change constant (+180 to the X value every 3 seconds).
If you have the keyframes selected and hold option/alt and drag the last keyframe it will move all of the keyframes while maintaining their relative position… If you wanted to double the duration you could drag the keyframe at 09;00 out to 18;00 and the 2nd and 3rd keyframes would fall at 02;00 and 06;00 respectively.
Darby Edelen
Designer
Left Coast Digital
Santa Cruz, CA -
Of course, thanks Darby…totally different methods then.
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In addition, in cs3, you can go into the graph editor and select some or all the keyframes. Then, with the bounding box turned on (it’s a button at the bottom), scale out the box. It will scale any selected keyframes proportionally.
Aharon Rabinowitz
Email: arabinowitz (AT) yahoo (DOT) com
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