[Gerben Greuliker]

Dan, again many thanks for a perfect working expression!

If I may borrow some more of your time, i’m trying to get a grasp of writing my own expressions and manage to write simple ones. Can you elaborate on the functions you are using on line 2?

cb gives a value of 0 or 1 depending on the state of the checkbox but what happens after that? Is it some short version of an if/else statement?

leading = cb ? 90 : 77.7;

[Gerben Greuliker]

Works like a charm!
Many thanks for your time and help, very much appreciated!

Gr Gerben

[Gerben Greuliker]

Hi Dan,

The idea is to control the value of key(2) to 0 or 15.
The expression you posted definitely does solve the problem! Many Thanx!
Good to see that I was looking in the right direction with the valueAtTime, just didn’t know how to implement it correctly.

If I could ask for one more thing; I also would like the expression to reverse at the end of the clip.
So there would be an key(3) and Key(4). Where key(3) would get its value from the checkbox and key(4) would be 0. Or is there a more simple solution?

Gr Gerben

[Gerben Greuliker]

oh stupid me, I mean Filip of course😬

[Gerben Greuliker]

And thats exactly what i’m looking for!
Like your Cell Pattern approach 😀
Never occurred to me to use it that way.

And again… Flip to the rescue!

¡Muchas grazias amigo!

[Gerben Greuliker]

Hi Flip!

Thanks for replying 🙂
I’ve attached a clip with all the color- and aberration effects stacked on top. This video-comp contains 2 instances of the footage that have a mask. This mask contains either the horizontal or the vertical strokes. I have set Fractal Noise with an extreme scale on either the x- or y-axis and a b*ttload of contrast to get solid blacks and whites. As you can see some of the lines appear and disappear and that is something I like to change into something more fluid. And i’m more or less dependent on the whims of the Fractal Noise seed.

What I want to find out:
– Can I have more control over the thickness of the individual lines (eg: a random thickness for each individual line between a value of 20 and 40 pixels).

– Can I seed the movement of the lines and set a min/max movement value so they always render different?

– Can I seed the amount of strokes and set a min/max value?

I was thinking somewhere in the line of using random(20,40) for al the min/max values and have read the ‘random motion’ tutorial by Dan Ebberts on Motionscript.com but changing the expression and combining it with something that generates strokes.. well that just goes over my head.

RANDOM-LINES.mp4 12 MB MPEG-4 - Click to view

• Copy Download Link

[Gerben Greuliker]

My best guess is they used the Red Giant Film plugin for this. I see generated hairs and scratches. And a little vignette. Then on top of that an inverse.

[Gerben Greuliker]

And again many thanks for the solution!

[Gerben Greuliker]

He Filip,

Thnx again!
In the meanwhile I did find the ‘replace’ function but dit not know where to place it in the expression. Now when I see it it makes total sense 😄.

As a sidenote: the top expression works, the bottom version not.

Response is:

Error: Syntaxerror: Invalid or unexpected token

The second quotation mark after the zero is blue. Adding a space doesn’t solve it.

Gr G

[Gerben Greuliker]

Hi Tomas,

I’ve found a way to build it almost as you suggested and works like a charm!

Thnx!