Join Angie Taylor for an in-depth discussion in this video Converting value ranges with the linear expression, part of After Effects Expressions for Premiere Pro Editors.
If we have a look at this composition here…you'll see I've got two cogs and cogs are animating using…the time expression and a sine wave to make them rotate…backwards and forwards in this kind of undulating way.…I've then linked that to the X position value of this layer.…I want that moving backwards and forwards with the cogs,…in time with them.…But, there's a couple of problems.…First of all the timing's not quite right,…you'll see that the movement that I'm getting on the ratchet…doesn't match up with the cogs.…
I could try fixing that, I could go to the end…of the expression and say and let's try multiplying…the result by two, and then I get more movement.…But, still not quite the right amount of movement.…So, I think I need a little bit more than that.…Let's try times three.…Okay, again it's not quite right,…now they're completely out of place.…And also, I've still got this problem.…So, I end up going to the end of the expression…and typing in +400 to move it across a little bit.…And, it's very difficult to get exactly the right position…
After Effects Expressions for Premiere Pro Editors is a creative, project-based workshop. Editors take a basic Premiere Pro edit and bring it to life using After Effects expressions and Dynamic Link, following author Angie Taylor's expert instructions. The concepts are broken down into manageable 3–5 minute videos, covering techniques such as randomizing effects, linking animation and color to sound, automating animation, and more.
- Linking footage from Premiere Pro in After Effects with Dynamic Link
- Understanding the expression language
- Automating animation with expressions
- Randomizing effect properties
- Linking color and light changes to audio
- Creating camera shake with a wiggle expressions
- Linking keyframes to create a lightening strike effect
- Synchronizing color and other design elements
- Creating amazing text animations