How to change speed of Typewriter effect WITHOUT keyframes?

[Dan_A_Art]

Hi all!

I am trying to create my own .mogrt file of a typewriter effect that's meant to mimick a robot speaking, with plans to move it into Premiere Pro so I can control the speed, font, colours, etc for future projects.

The attached image is from a template that I downloaded, and the speed can be controlled via this slider and NOT keyframes.

The below image is my effect that I'm creating. As you can see, it has the normal 'slider' with the keyframes. My issue is that I want to bring this into Premiere Pro and control the speed in there, and that can't work with keyframes.

Does anybody know how that 'speed' fx was added onto the first image, allowing the typewriter effect to be made without keyframes?

Thanks! Hope that made sense lol 

[Mathias Moehl]

You could apply an expression to the slider which increases your slider value over time without the keyframes.

Example:

var dur = 3;
linear(time,0,dur,0,100)

If you apply this expression to your slider, it will increate the slider value during the first three seconds of the comp from 0 to 100.

Now replace the 3 by another slider, say "duration" and then you can control with that slider how long your typing animation should last.

[Dan_A_Art]

Thanks for replying Mathias. How do I change the '3' to another slider? I am still learning about expressions.

[Mathias Moehl · Accepted solution]

[Dan_A_Art]

That worked - thank you!