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Questions tagged [after-effects-expressions]

A script used to set a property value for a layer in an After Effects composition.

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2answers
10 views

How to make flickering white spots and moving effects in After Effect

I want to know how to make those particle-like spots and you see the transparent effects and the fast moving text? I want to know what that effect is called and how to make it. Please help me!(Please ...
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1answer
40 views

Adobe After effects watch folder render all composition

I am saving an After effects file in a watch folder which is being watched by Adobe media encoder using extendscript , the problem is all the compositions are rendered to a video by adobe media ...
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0answers
9 views

Building a 3D rig using a camera and expressions to include overshoot and randomness

Can anyone point me to a good breakdown of how to build a rig like the one shown at 11m55s approx in this (excellent) video: https://www.youtubhttps://youtu.be/WRkYP7wnD40?t=11m55s Key points are: ...
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1answer
14 views

position expression

Im trying to do an expression to my object. I want to make him come out from the side to center. I searched a lot but I didnt find any expression. I can do it with keyframes but I need expression only....
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1answer
24 views

help to animate an lower thirds that's positioned by expressions

I'm new to using expressions in after effects and I've also hardly touched Java before. However using some online tutorials and common sense, I managed to create a lower thirds title graphic ...
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1answer
17 views

After Effects - EG Template: Of 2 keyframes I only want to change the 2nd in EG, help!

I'm trying to create a new Essential Graphics template in After Effects. I have an animation (at its most basic, it's a rectangle that expands from a set, small size to - hopefully! - a user defined ...
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1answer
215 views

Use markers in After Effects as triggers for a particular animation

I have a library of titles and lower third animations. I am searching for a script /expression that will automate a certain animation project from my library by calling or linking it to starting and ...
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1answer
42 views

After Effects: Make beam effect go over end/beginning

The beam effect is a plugin in AE in which I can basically decide a "beginning" or "ending"-coordinate and AE will draw a line between these two coordinates, the line can be customized but that ...
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1answer
25 views

using images as text characters in after effects

I've made a series of comps each representing a letter from the alphabet. Is there an expression or plugin where I can convert the relevant text character on screen to be replaced by the appropriate ...
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2answers
51 views

How to translate face tracking offset values into a 3D null position

I want to put a 2D hat on a video clip of a person, whose head is tilting as he speaks. I can face-track the face using After Effects CC 2017. I end up with detailed tracking data, which includes ...
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0answers
183 views

AE CS6, get size of a text box

I want to use the size of a text box in an expression script. Under CC version, you can use the method sourceRectAtTime() which doesn't exists under CS6. I found some solutions but they seems really ...
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0answers
27 views

Is possible to pass variables from premiere to after effect compositions?

One of the latest features put inside AE & PR 2017 is the Live Text Edits.. In short you can mark an after effect composition as template and then all the texts inside that composition will be ...
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1answer
61 views

Animating particles with collision avoidance?

I need to drive a large number of small 2D cars around on screen in a fairly random fashion... I have the Trapcode Suite. I'd really like them not to overlap each other. What's the easiest way to ...
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1answer
167 views

After Effects automation and annotation tools (scripts) for student work

I need a professional advice for self-assessing among students. I am searching for a tool (script or scripts) that helps annotating very long videos in After Effects. I also would like to automate the ...
1
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1answer
30 views

Create an animation of a slider-crank mechanism system

I'm trying to create an animation of a slider-crank mechanism system in After Effects, but I'm finding it difficult to create a move closer to a real simulation. Would anyone have an idea how I ...
0
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1answer
343 views

set scale in pixels in After Effects using Expressions

You can right click on a scale, hit Edit, and then enter scale in Pixels, inches , % of Comp, of source.... I would like to set the scale in pixels. How can set the units using expressions? I tried ...
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1answer
1k views

Control key frame value with slider control

I have an object in After Effects comp and I need its scale to change from keyframe A to keyframe B and I need keyframe A to have value of 95% and keyframe B value of whatever is set via slider ...
2
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2answers
111 views

After effects position expression issue

I'm trying to make clouds move out of frame and than appear again from the other side. var vel = 100; var pInit = position.valueAtTime(0)[0]; // initial position of a cloud var tInit = (thisComp....
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2answers
49 views

Adobe After Effects: Keying layers based on other layers

I have 4 video streams: a color stream A1 a black and white stream A2, representing the distance of objects in the color stream A1 a color stream B1 a black and white stream B2, representing the ...
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1answer
104 views

Unlink two layers after a certain time in After Effects

In After Effects, I want to have a layer (let's call it Leader) that moves and another one (let's say Follower) that is linked to the first one, so it will have the same movement, but at a specific ...
1
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1answer
191 views

Link audio to opacity effect of an image in After Effects

I have 3 audio files from a podcast. 1 file from Steve, one from john, and the other is from me. I have a composition with the three audio files and also 3 png images of our faces, one for each of ...
2
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1answer
111 views

How to import 2D position data into After Effects

If I have a .csv file of x / y coordinates, representing positional data of an object in an animation, what's the easiest way to apply that to a 2D null in After Effects? Eg: Frame,Xpos,Ypos 1,33,...
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1answer
217 views

Parent Pick Whip Not Showed On Effect Transform Keyframing

I wanted to parent the effect transform expression to the tracking motion (null object) When I saw the tutorials.. it showed me to click and drag the pick whip, but on my after effects there are no ...
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1answer
44 views

What properties of After Effects project can be edited without opening the application itself

I found myself in position where I need to render 6(or more) layers in different order. For example in 1,2,3,4,5,6 then 4,2,1,3,5,6 and so on. Some of the layers blend with the former or later one. It ...
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2answers
1k views

Expression for inverse parenting on Y axis in after effects

I have a composition in After Effects (CS6) that contains 2 objects that are usually a set distance apart. I am looking for an expression or other method to automatically move one layer by the same ...
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1answer
246 views

Multiple expression controls in ONE FX controller

For the sake of a cleaner workspace is it possible to have multiple expression controls, such as slider controls, in the same FX control? Basically, instead of seeing "Slider Control" and "Slider ...
1
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1answer
377 views

After Effects Expression, layer not found or missing

I'm using a plugin called Duik 15 to rig a character to turn the right arm into an IK controller, and it has produced an expression that is unable to find one of my layers. I'm not sure why it's not ...
1
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1answer
740 views

How to loop outer glow layer style in After Effects?

I have a layer in After Effects to which I have applied an outer glow as a layer style. Ideally I would like the glow to turn off and on, in a loop, starting at a point in time and then stopping. Is ...
1
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0answers
315 views

Expressions: Data-generated After Effects Graphic using CSV file?

Is there a way to read a CSV file or spreadsheet containing dates in timecode in one column and data in another column, then use the time/date to pair with footage to display the corresponding data? ...
1
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1answer
672 views

After Effects: Linear Expression - going from value 1 to another value and then back to value 1

Essentially I am trying to get a position expression on a video layer (two dimensional) to go from 640, 360 (middle of the screen) to another value defined by an expression control and then back to ...
2
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2answers
785 views

Can an expression parse a text file or the expression of another property in After Effects?

I am going to have tons of layers use the same expression, but I need to be able to edit the expression later without having to edit it for every layer. I also can't simply have each layer's property ...
2
votes
1answer
103 views

Physics and Chemistry Animations in After Effects

Are there any plugins/physics simulation engines other than Newton that will be useful for creating Physics and Chemistry content in After Effects?? For example, if I have a requirement to create the ...
2
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1answer
39 views

changing this code to check for a collision from a specific layer

I got this code from motionscript and I would like to change it to check a specific layer instead of all the layers for a collision. Maybe within the function checklayers() and then there's the if ...
3
votes
1answer
985 views

After Effects: controlling slider in ExtendScript

I'm newbie in After Effects. I've learned how to control slider from expressions. Now I need to get value of slider in script (jsx/extendscript). How can I achieve that? I've tried (in *.jsx): var a =...
3
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1answer
93 views

Reveal entire layer in after effects with mask partial overlap

I'm looking for a way to reveal my entire layer when a portion of my mask covers the layer. I have a composition with multiple individual layers, that I want to reveal with a set matte. However lets ...
1
vote
1answer
211 views

How to automatically pull text out of a video

I am currently experimenting with after effects and premiere to see what sort of strange things they might be capable of and was hoping someone had some insight on an Idea I had. In this situation I ...
2
votes
1answer
563 views

Parenting a null causes unexpected results

I've built an arrow that is controlled by two nulls - one at the start point and one at the end point. Using some trigonometry in some expressions, it works. When I move the nulls, the arrow resizes ...
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1answer
298 views

How to get 'outer' composition's current time?

Suppose I've got 2 sequences, one named OUTER and one named INNER. Composition INNER is inside composition OUTER. INNER is shorter than OUTER and is placed in the middle of it's timeline. Inside INNER ...
4
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2answers
3k views

After Effects distance between two points

I have written an expression to get the distance between two points, but it does not work and I haven't a clue why. It's pretty simple: function findDistance(xa, xb, ya, yb) { return Math.sqrt( (...
5
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1answer
95 views

Evolving lines with mirror effect

I would like to create evolving lines similar to those in this sequence (starting at 0:28): I know how to reveal lines, but I struggle to make the line moving so ...
5
votes
1answer
2k views

After Effects: Increment a Variable over time

I have following problem: I am trying to tweak the speed of a Math.sin function. Therefore I need a variable that incerements over time with a combination of a keyframed speed variable. Sounds ...
1
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0answers
369 views

Overshoot expression: Consider variable text width

I have a lower third which resizes to the length of text. Now I want to make a overshoot effect. But.. I have no idea where to put the length of the text into the expression. This is expression ...
1
vote
1answer
59 views

Making a simple animated template for frequent slight changes

I've made an example version of a news video in After Effects that we will be altering weekly. The template might be used by less skilled people and I'd like to know what (if there are) ways to make ...
2
votes
1answer
839 views

How do I create this slide/bouncy effect in After Effects?

The news channel in my country is using a nice bouncy/slide effect. Now I'm trying to recreate that in After Effects. I tried many effects and expressions, Googled a lot and watched many tutorials. ...
2
votes
1answer
347 views

AE: Hide object after random time

So, I've a bunch of objects inside a composition and my ideia is the following: I want to create an expression in one of them that will change the opacity of that object to 0 after a random time. ...
2
votes
1answer
5k views

Parent a Position X from Particular World to it's own transform xPosition

I have a layer called Blue. I applied CC Particular World to a ShapeLayer with an animated separated X Position (with 3 keyframes). The thing is that the effect doesn't move along with the shape. So ...
5
votes
3answers
8k views

How to loop an animated mask?

I'm trying to make a loop from an animated mask, but each time I introduce my loop expression: loopOut (type="cycle", numKeyframes = 0), After Effects is telling me that: "Expression is deactivated,...
2
votes
1answer
141 views

After Effects: Images on whole pixel still blurry edges

I am jsut working on a new After Effects Project. I have a bunch of images I am working with and I just wondered, why the edges of images are so blurry. First I thought it might have something to do ...
3
votes
1answer
9k views

After Effects: Create an isometric/orthographic Camera

I know that its not possible to create an non-perspective camera in after effects. But I read about a way to fake the effect of an isometric camera in after effects. I just didn't find something ...
4
votes
1answer
5k views

After Effects: Parent a Camera's position to a Null-Object with specific Off-Set

I am just struggling with a simple expression thing I guess. I have a camera looking at an Object in 3D Space. Actually The Object is at [0,0,0]. The Camera's position is at [29,-1637,-2248]. What I ...