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After Effects Expressions

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COW Tags : Adobe After Effects
Re: Expression to link scrolling numbers to another layer's scale
by Walter Soyka on Apr 6, 2012 at 4:22:00 pm
in the Adobe After Effects Forum
There's a dedicated After Effects expressions forum [link], but I'll give it a go here. Create a new text layer, through in some dummy text, and position and format it as you like. Click the disclosure triangle next to the text layer in the timeli
Re: Keyframe interpolation via scripts
by John Cuevas on Mar 23, 2012 at 6:15:46 pm
in the Adobe After Effects basics Forum
I think you will find more help in the after effects expressions forum, scipting shares some of the same language I believe. This forum is for people new to AE who encounter problems.
Re: Random blink for opacity
by Walter Soyka on Nov 21, 2011 at 9:35:18 pm
in the Adobe After Effects Forum
[Danielle Masek] "I pasted that script in, changing the 8 and 10 (assuming that was referring to time) to 8:21 and 10:19 b/c those are actually the exact times. I got this error: after effects warning: expected: ) Expression disabled" After Effe
Tutorial: Flying Paint - Simulating liquids with AE particles Part 2
by Matthew Tompkins on Nov 11, 2011 at 5:00:50 pm
in the COW - Tutorials Forum
Adobe After Effects Expressions Flying Paint - Simulating liquids with AE particles Part 2 Exploring CC Particle World and CC Vector blur and setting up the initial simulation of liquid particles within After Effects. Tutorial, Video Tutorial  
Tutorial: In The Loop - A Killer Expression
by Matthew Tompkins on Oct 27, 2011 at 5:00:42 pm
in the COW - Tutorials Forum
Adobe After Effects Expressions In The Loop - A Killer Expression A detailed explanation and demonstration of the uses of the loop expression in After Effects. Examining the loopOut(), loopIn(), loopInDuration(), loopOutDuration() commands and thei
Re: Easily turning opacity on or off over frames
by Walter Soyka on Oct 17, 2011 at 9:02:31 pm
in the Adobe After Effects Forum
[Scott Green] "I just wondered if maybe there's an easy way using code possibly to say 'turn on this layer for 1 frame, then turn it off for 1 frame, etc. etc.'?" Yes -- welcome to expressions. I'll answer your question here, but you can also get
Re: How to access shape layer info via expressions
by Walter Soyka on Oct 17, 2011 at 7:33:51 pm
in the Adobe After Effects Forum
Ryan, you might get an answer here, but this question will probably be answered much more quickly in the CreativeCOW After Effects Expressions forum [link]. Good luck,
Store the time at which a variable reaches a value
by Xavier Gomez on Oct 13, 2011 at 12:04:30 pm
in the Adobe After Effects Expressions Forum
Hello, I would like to store the time of the comp at which a certain quantity reaches a given value for the first time. I bet it is pretty elementary but, well, i'm still a beginner (I did search the Adobe After Effects Expressions forum).
Re: Appwall
by Kevin Monahan on Oct 4, 2011 at 11:49:46 pm
in the Adobe After Effects basics Forum
You're going to need expressions for for bouncing and jiggling. Hopefully, someone can point you to an expression that would be suitable for you. If not, you can go to the Effects and Presets panel menu and choose to Browse Presets. You can th
Re: Extendscript question in AE CS5?
by Walter Soyka on Oct 4, 2011 at 7:41:50 pm
in the Adobe After Effects Forum
I am not an scripting wizard, so I can only offer very limited help. You might have a little better luck in the After Effects Expressions forum [link]. Sorry if this is "Did you plug it in?" question, but do you have After Effects > Preferences >
Re: after effects expressions, text, and subtitles
by andrew baker on Aug 30, 2011 at 6:31:10 pm
in the Adobe After Effects Expressions Forum
Thanks we figured it out, I wasn't adding cap or the non space to the video file written in the expression. Thanks for your time!
Re: after effects expressions, text, and subtitles
by Dan Ebberts on Aug 30, 2011 at 6:07:13 pm
in the Adobe After Effects Expressions Forum
It looks like some of the code got converted to HTML. This should work: L = thisComp.layer("Legato_Ames_BTS_02_trans.mov"); max = 5; // number of words to display n = 0 if (L.marker.numKeys > 0){ n = L.marker.nearestKey(time).index;
after effects expressions, text, and subtitles
by andrew baker on Aug 30, 2011 at 5:14:43 am
in the Adobe After Effects Expressions Forum
I am trying to get the marker audio transcription from premiere that i've imported (into after effects) to show in after effects, there is an expression for it when used the audio transcription markers will turn into words on screen therefore turnin
Conditional expression [if/else, multi-condition], getting strange error.
by Kristine Cattrysse on Aug 18, 2011 at 4:53:09 pm
in the Adobe After Effects Expressions Forum
Hi all. I'm a newbie at After Effects expressions and syntax... learned a little bit of Javascript years ago, but that's giving me more trouble than anything. I have the rotation of an object linked to the rotation of a steering wheel, with a lit
Re: Start and stop camera shake expression on frames, not seconds
by Walter Soyka on Jul 13, 2011 at 6:07:49 pm
in the Adobe After Effects Forum
Only the second will seem to work, because they are both always evaluated, and the bottom set is "overwriting" the top set every time. You need to add a conditional (if statement) to one or both of the sets so that they will only be evaluated duri
Re: Advice needed on motion graphics field
by David Johnson on Jul 10, 2011 at 1:56:32 am
in the Adobe After Effects Techniques Forum
Although I've visited the UK, I've never worked there so I can't answer your specific questions, but since no one else has, I'll try to help a little. [Mio Tanaka] "Do I need to be proficient at After Effects expressions? Or Is it okay if I can ju
Advice needed on motion graphics field
by Mio Tanaka on Jun 28, 2011 at 1:45:34 am
in the Adobe After Effects Techniques Forum
I'm a 27-year-old temp TV CG designer working at a Japanese broadcasting company. I'd like to get a YMS visa (=two year working visa) before I become 31 and work as a motion graphics designer in London, where I studied English for about two years, a
Re: Doc Effect
by John Cuevas on Jun 27, 2011 at 1:50:20 pm
in the Adobe After Effects Forum
Post this in the After Effects Expressions forum. Dan Ebberts checks in there a lot and he REALLY knows this stuff.
Re: Black screen delete expression?
by Cedric Bogaert on Jun 24, 2011 at 7:16:14 pm
in the Adobe After Effects Expressions Forum
Uuh, I'm not really used to all the after effects expressions, so I just need a expression that I need to add to the movie layer. I think it would be better when it just skips the black images, But I would be happy to see when it just reshowed the pr
Re: "Playing" a layer...
by Greg Burrus on Jun 20, 2011 at 4:06:08 pm
in the Adobe After Effects basics Forum
I made a quick expression that I think might be what your trying to do. enable=effect("Enable Bounce")("Checkbox"); soundLVL = thisComp.layer("Audio Amplitude").effect("Both Channels")("Slider"); if( enable == 1){ if(soundLVL >30){ transform
Re: time change audio expression
by Walter Soyka on May 21, 2011 at 11:58:16 pm
in the Adobe After Effects Forum
You might get better answers on this in the After Effects Expressions forum [link] -- but I'd either use time-remapping [link] or valueAtTime [link]: thisComp.layer("track1").effect("Both Channels")("Slider").valueAtTime(time/2) This would run
Re: After Effects Expressions;Chapter 3, Comp 16
by Rich Cho on May 5, 2011 at 9:45:16 pm
in the Adobe After Effects Expressions Forum
Ran into same problem. Glad I was able to find solution here. Thanks Dan!
Re: Layer follows Stroke start
by Aaron Pozzer on Apr 18, 2011 at 7:07:48 pm
in the Adobe After Effects Expressions Forum
damn, confusing. its worse that time is in seconds, not in frames! oh well. i do have lots of roving frames in my position channel between the 2 keys. it seems that no matter how long you stretch the 2nd key out to, the expression still works.
Re: decaying bounce off imaginary wall
by Barry Suydam on Apr 15, 2011 at 7:27:57 pm
in the Adobe After Effects Expressions Forum
I thank you again. The world of after effects expressions is lucky to have a person like you to be able to throw out a problem and have a solution so fast. I am not sure where you live or who you work for but thank you. I have a fair understand
Re: Scripts creation?
by Kevin Camp on Feb 18, 2011 at 7:08:42 pm
in the Adobe After Effects Forum
you could post in the 'after effects expressions' forum here (it should probably be called the 'expressions and scripting forum'. but you'll find a library of scripts that you can pick apart and even scripting tutorials at aenhancers.com.
Re: scripting : creating comp
by Theo van Laar on Jan 23, 2011 at 5:40:00 pm
in the Adobe After Effects Expressions Forum
What is the best way to learn how to script in AE? I am a MAYA TD but it seems AE is 10 times harder than scripting in Maya. Do you have any resources that you recommend? http://www.amazon.com/After-Effects-Expressions-Marcus-Geduld/dp/024080936X
Re: Countdown and progress bar with filling letters
by Walter Soyka on Jan 6, 2011 at 6:59:34 pm
in the Adobe After Effects Forum
Check the After Effects Expressions forum [link] -- there are plenty of countdown examples. Here's a good thread: http://forums.creativecow.net/thread/227/10693
Affecting every layer
by Jonathan Piacenti on Dec 7, 2010 at 7:55:17 pm
in the Adobe After Effects Expressions Forum
I'm new to After Effects Expressions (and this forum. Greetings, all!), though I've done some coding before. When I run this code, it does not affect every layer, but affects the layer upon whose position property I stuck it on repeatedly. Can someon
Re: Tracking Moving Text
by Graham Macfarlane on Dec 4, 2010 at 9:09:26 am
in the Adobe After Effects Forum
If your rolling numbers are in the same comp as the text blocks then yes but I thought you had precomped the text blocks without the rolling numbers which means that the rolling numbers are outside the text block comp. See the following image for
Tutorial: Gravity in After Effects
by Jesse Toula on Dec 3, 2010 at 4:31:22 pm
in the COW - Tutorials Forum
Adobe After Effects Gravity in After Effects Expressions in After Effects can be used to save you from doing a ton of animation by hand. In this video tutorial, learn to use some simple math functions and expressions to create a bouncing ball effec
Re: Actionscript to stop sound on click
by Marcus Geduld on Nov 29, 2010 at 2:38:18 pm
in the Adobe Flash Forum
Hi. As I suspected, there was no instance name set for your button. As soon as I added one, it worked. I'm wondering if you're confusing Library Symbol names (names of items in the Library) with instance names. Instance names must be specified in the
Re: Actionscript to stop sound on click
by Marcus Geduld on Nov 28, 2010 at 11:34:09 pm
in the Adobe Flash Forum
Did you check to see how your code differs from the code I just posted? I know you say you gave the button an instance name, but this error... 120: access to an undefined value loop6Button ... implies there isn't an instance name. Please cli
Re: AS3 Poll: Number change when user clicks
by Marcus Geduld on Nov 28, 2010 at 8:58:30 pm
in the Adobe Flash Forum
I don't really understand what you're trying to create. Here's what it sounds like, from your description: when you first see the app, it looks like this, a series of empty boxes: [] [] [] [] [] If the user clicks one, it gets a number one
Re: Actionscript to stop sound on click
by Marcus Geduld on Nov 28, 2010 at 8:47:42 pm
in the Adobe Flash Forum
Your code looks okay to me. Did you remember to give the new button an instance name? Is your code in frame one? In any case, I added another button to my code and posted the new version (which works) online. http://www.grumblebee.com/stuff/co
Re: Actionscript to stop sound on click
by Marcus Geduld on Nov 28, 2010 at 8:27:28 pm
in the Adobe Flash Forum
I'm not sure. Can you post your code? Author "After Effects Expressions" Co-author "After Effects For Flash, Flash For After Effects" Artistic Director, Folding Chair Classical Theatre, Inc Senior Flash Developer, Zeitbyte.com
Hidden Templates & Powerful Expressions
by Andrew Devis on Oct 12, 2010 at 8:07:47 am
in the Forum
This video tutorial shows how to find and apply the hidden templates in After Effects so that you can kick-start your work with a full project ready to edit. AND, you will learn how to apply the hidden Expressions in After Effects to your own layers.
Digital Clock in FCP that speeds up/slows down
by Brandon Hunt on Oct 11, 2010 at 10:06:34 am
in the Apple Final Cut Pro Forum
Hey guys, I need help with a digital clock for FCP I searched the forums and found a few plugins for the clock but I can't seem to find one that can do what I'm looking for. So far the Too Much Too Soon digital clock plugin works best but I nee
Hidden Templates & Powerful Expressions
by Andrew Devis on Oct 4, 2010 at 9:43:03 am
in the Adobe After Effects Forum
This video tutorial shows how to find and apply the hidden templates in After Effects so that you can kick-start your work with a full project ready to edit. AND, you will learn how to apply the hidden Expressions in After Effects to your own layers
Tutorial: EQ Animation using AE Expressions
by Matthew Tompkins on Sep 7, 2010 at 6:31:23 pm
in the COW - Tutorials Forum
Adobe After Effects Expressions EQ Animation using AE Expressions In this video tutorial Matt Tompkins gives some great tips on how to create and animate a rack of Graphic Equalizer bars using solely expressions in Adobe After Effects. Tutorial, Vi
EQ Animation using AE Expressions
by Matthew Tompkins on Sep 7, 2010 at 11:31:23 am
in the Adobe After Effects Expressions Forum
In this video tutorial Matt Tompkins gives some great tips on how to create and animate a rack of Graphic Equalizer bars using solely expressions in Adobe After Effects.
Re: After Effects Expressions book project files
by James LaRuffa on Aug 16, 2010 at 9:49:48 am
in the Adobe After Effects Expressions Forum
Great idea! Thanks, Jim
Re: After Effects Expressions book project files
by Kevin Camp on Aug 15, 2010 at 1:46:34 pm
in the Adobe After Effects Expressions Forum
you might also try downloading the trial version of cs5 to view the project files. Kevin Camp Senior Designer KCPQ, KMYQ & KRCW
Re: After Effects Expressions book project files
by Dan Ebberts on Aug 14, 2010 at 3:12:50 am
in the Adobe After Effects Expressions Forum
Assuming you had access to CS3 and CS4, you wouldn't have to manually key everything in, you should be able to just copy and paste the expressions from a CS4 project to a CS3 project. I think the book is still useful, even without the project files.
Re: After Effects Expressions book project files
by James LaRuffa on Aug 14, 2010 at 1:53:57 am
in the Adobe After Effects Expressions Forum
Thanks, Dan. That's what I thought... How hard would it be for someone to convert the chapters to CS3? Would they just need to manually key everything in again? I have an idea. If someone converts them to CS3 and posts them somewhere, I will
Re: After Effects Expressions book project files
by Dan Ebberts on Aug 13, 2010 at 9:22:36 pm
in the Adobe After Effects Expressions Forum
Sorry, I should have figured it out from your first post. It seems the project file was created with AE CS4 so you won't be able to open it with CS3. Dan
Re: After Effects Expressions book project files
by James LaRuffa on Aug 13, 2010 at 9:08:32 pm
in the Adobe After Effects Expressions Forum
The error message is: After Effects error: The file you are attempting to open was created with After Effects version 9.0x272 (Macintosh Intel) and cannot be opened with this version. See http://www.adobe.com/aftereffects for more information on u
Re: After Effects Expressions book project files
by Dan Ebberts on Aug 13, 2010 at 2:07:40 pm
in the Adobe After Effects Expressions Forum
It would help to know the exact error message. Dan
Re: After Effects Expressions;Chapter 3, Comp 16
by John Cuevas on Aug 4, 2010 at 5:11:50 pm
in the Adobe After Effects Expressions Forum
Thank you Dan, works now. Since I saw that Marcus mentioning you in his book I just wanted to take the time to thank both you and Marcus for the incredible resource that is "After Effects Expressions". I've been using AE since COSA made it, but h
Re: After Effects Expressions;Chapter 3, Comp 16
by Dan Ebberts on Aug 4, 2010 at 4:11:44 pm
in the Adobe After Effects Expressions Forum
Try it this way: effect("4-Color Gradient").param(thisProperty.propertyIndex - 2).valueAtTime(time - .5) Dab
Re: After Effects Expressions;Chapter 3, Comp 16
by John Cuevas on Aug 4, 2010 at 1:50:44 pm
in the Adobe After Effects Expressions Forum
Sorry, I tried to upload a screen shot of the effect and expressions, but didn't work. Expression that works: 4 color gradient Point2: effect("4-Color Gradient")("Point 1").valueAtTime(time - .5) Does not work: Point 2: effect("4-Color Gra

Podcasts

adobe after effects podcast
After Effects Expressions Tips #1
In this podcast, Creative Cow Leader Aharon Rabinowitz shows you some basic expression principles and shares a very useful expression that can be used to convert one set of values to another.
adobe after effects podcast
The Vehicle Rig
In this tutorial, Creative Cow contributing editor Carl Larsen shows you how to build an expression-based vehicle rig that automatically calculates the rotation of its wheels based on the movement of the vehicle chassis.
adobe after effects podcast
After Effects Expression Controls - 1
In this tutorial, Creative Cow Leader Aharon Rabinowitz introduces you to expression controls, a series of effects designed only for use with After Effects expressions.
adobe after effects podcast
AE Quick Tips #4: Copy Expression Only
In this tutorial podcast, CreativeCow leader Aharon Rabinowitz shows you a menu item for speeding up the process of copying expressions to other layers, without typing or altering the current values.
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Adobe After Effects Expressions Forum


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