FCP: How do I make a series of vertical clips move from right to left all constant speed/distance?

Hiya!

So, I'm making a horizontal video that is composed of many equal-length vertical clips that all move next to each other from right to left at constant speed and without any separation between them.


I usually achieve this by keyframing one clip from right to left, then copy-pasting that transformation to all other clips which I have stacked vertically in the timeline. Then I move the next clip forward by, say, 3 seconds, and the next clip by 6 seconds, next by 9 etc.... This makes the clips all overlap at regular intervals, so they all move next to each other without any speed or distance changes between them.


This procedure has worked fine for clips of 10 seconds.

However, I've now started a new project with clips of 14 seconds, and now it no longer works.


There now seems to be some kind of 'ease in' and 'ease out' to the clip animation, where it appears on screen at speed A, then moves through the screen at speed B, and leaves the screen with speed A again.

This means that the clips no longer overlap correctly: the change of pace of the animation causes distance changes between the clips.


I've tried changing the animation from 'smooth' to 'linear'. I've tried the trick of adding loads of keyframes to make it move a constant speed. I've searched for ways of deactivating ease effects on animations.


I've tried copy-pasting the animations from 10 second clips onto the 14 second clips. This works: the clips no longer vary in pace. However, that means that the last 4 seconds are missing. When I then modify the last keyframe to take the 4 seconds into account, the animation speed variation returns.


The only discussion I could find on this specific issue is in this thread from over 10 years ago: How do I make my clip move at a constant … - Apple Community


Thanks in advance!


MacBook Pro 15″, macOS 11.6

Posted on Nov 8, 2023 11:37 AM

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FCP: How do I make a series of vertical clips move from right to left all constant speed/distance?

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