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Scale changing oddly between keyframes
Premiere Pro CS4
Windows 7 Home Premium 64bitI have a weird behavior that I’m trying to work around and it’s driving me mad.
Video of a guitar performance, and I’ve got two video tracks, house right and house left; I’m switching back and forth between them in multi-camera view.
To add interest, I’d like to zoom in on the guitarist’s hands, so while HR has the screen, I’m changing the scale value on HL, and vice versa.
At 20:00:00, I place an edit, going from HR to HL.
Back in my source track for HL, I back up several frames, set a keyframe for the current scale value.
I advance a few frames, and change the scale, setting a new keyframe.
What you have on HL source, then, is a keyframe scale=50, several seconds of video, another keyframe scale=50, two frames, keyframe scale=100; hold scale for previous edit, “zoom” up to 100 to focus on guitarist’s hands.
The weird part is that between the two scale=50 keyframes, in that keyframe-free several seconds, the scale value starts at 50, drops to zero at the midpoint, rises again to fifty at the second keyframe. If I add more scale=50 keyframes, it drops to zero between each one. 50 -> zero -> 50 -> zero -> 50. It’s driving me mad!
What’s going on, and can I stop it or work around it?
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3 Replies
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Well, okay, workaround = creating another video track permanently zoomed in. But still: why should Premiere throw in all this extra scale activity between identical keyframes?
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Right-click on the keyframes and check that they are set to Linear and not Bezier or Continuous Bezier.
For a visual representation, expand the clips in the timeline and set the display option to Motion > Scale.
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Yep, that was just the thing. When I took off the easing, the issue went away. Thank you!
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