is there any way to make mass changes to keyframes in Track Motion or the like? I have a project that has hundreds of keyframes, and I'd like to change the X coordinate on all of them.
Sure, just go into the track motion property page, select a range of keyframes, and drag them. Hold Ctrl first if you want to make a copy. Copy/Paste works too. Finally, if "Lock Envelopes to Events" is on (Option menu), then moving an event that's over the keyframes will move them too.
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I read it wrong, when I saw "X-coordinate", I was thinking position on the timeline. Sorry, there's no way to make en-masse changes to keyframe properties.
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yeah it would be nice in an update.. if you select mutiple keyframes and then change one of the attribute dialogues to have it apply to all of them.. i am on my way to carpal tunnel at this point.. :-)