After Effects Expressions 406 - Performance & Fixing Errors

[@Dezember456]

I had around 118 Subcomps with around 30 expressions each and AE wasnt able to handle that much and throwed nonsensical errors (like errormessages that didnt fit to the expression) and your video showed me to bake my expressions. Did take quite a while but solved the issue. A script I found only even made it easy to bake it all at once without manually selecting each proberty. Thanks!

[@2DeadFrog]

You have an amazing channel here, congratulations!! The new Java Script engine opens news possibilities in After Effects. A video talking about it would be amazing. Thank you for your work.

[@Animoplex]

Great suggestion, some brainstorming has happened on how to incorporate that into the course. Maybe it'll be a one-off lesson that dives into it. It's still pretty new, post requests if there's any specific info you're looking for.

[@2DeadFrog]

@@Animoplex I was trying to create an easier way to create text animations. Do you think that the new Java script possibilities brings something in this way? Maybe using it with the expression selector

[@Animoplex]

Still digging into the new expression engine, post an update if you find any good info to help with text animations!

[@2DeadFrog]

@@Animoplex The new AE CC is a nightmare. I have some Videohive project that I made. I can't even open the project without a crashing. I'm waiting a more stable version to begin my studies.

[@Animoplex]

You can download CC18 in the meantime. Look for “Previous Versions” or “All Versions” in the app list. Still on CC18 for the same reason, a lot of designers are on CC17 as well.

[@henriquebalzani1563]

I am loving your channel! Thank you : )

[@Animoplex]

Thanks! You are most welcome, glad you're enjoying the content.

[@lauragranadosbarco6772]

Omg I love you. Thank you.

[@Animoplex]

You're welcome!

[@jigneshghelani3559]

very helpful and tricky video

[@Animoplex]

Glad you found it helpful! It’s one of those tutorials that aren’t really focused on a specific technique or solution, but it has some good info in it. It almost wasn't included but figured it was important enough. Hope it’s not too tricky for you!

[@maxmagnus777]

Hi I am not getting the list of expressions any more. It is not finishing typing my procedures or variable names. Example: I write "wigg" and it should offer to finish the name of my procedure with "LE" -> "wiggLE". or I write "to" and it is not offering me list of procedures from which I can choose "toComp()" for example. I must had clicked something somewhere in AE. I hate how it is easy to mess this program up.

[@Animoplex]

Go to Preferences > Scripting & Expressions and make sure Auto Complete is enabled.

[@maxmagnus777]

@@Animoplex tnx, I am working on slow comp and on version AE 2014 which doesn't have that part of menu. Any ideas of whether it even existed back then? Could it be that I saw it on higher versions only?

[@maxmagnus777]

@@Animoplex I've just found out that popup help was introduced in later versions. I'll have to go back to my own pc. I wonder what else I am missing on my slow laptop. Anyways, tnx again. Have a great summer.

[@도윤-s1h]

what is the problem if pop up says that "SyntaxError: missing ) after argument list"? But it has ) definitely! I dont know how to solve it.

[@Animoplex]

Can you share your expression? You may need more than one ) or may be missing another expected element that's triggering the issue.

[@FutureStars184]

I am using 2017 adobe AE and I am having problem with Expression After effects warning: Expression Disabled. error at line 1 in property " x Rotation" of layer 1 (Helper) in comp "main comp" syntax error . how can I fix it plz answer

[@Animoplex]

You'll need to share the expression if you want help with the specific issue. Otherwise I'd recommend checking the syntax, make sure you're providing the right type of value or multi-dimensional rotation value.

[@probablykasper]

Is there any good solution to the problem of keyframes not having memory? If you need to use a value as a delta, this seems like the only solution

[@Animoplex]

Try this: dur = thisComp.frameDuration; t = 0; mul = 0; while (time > t) { src = effect("Slider Control")("Slider").valueAtTime(t); mul += src * dur; t += dur; } value + mul.toFixed(2) Now add a Slider Control to that layer and use the expression as an acceleration modifier on a value, setting keyframes along your timeline to start and stop the value increase. See if that helps your scenario.

[@probablykasper]

@@Animoplex Isn't that the same way of doing it, which results in an exponentially increasing render time?

[@Animoplex]

Yup. Apologies, misread your specific question earlier. This is the only known way to retain value information across keyframes. If you find another solution, please share!

[@akafonto]

object of type function found where a number array or property is needed

[@pritampawar8044]

error at line 1 in property amount of layer 1 ( Text ) in comp 'Comp1'................ how to fix this error pls help

[@Animoplex]

Can you share your expression and provide the property name you're applying this to?

[@md.kawsarahamed4323]

after effect warining: an expression was disabled as a result of an error. error at line 2 in property 'position' of layer 1('Shape Layer 1: path 1 [1.1.0]) in comp 'comp 1'. function srclayer ()()()()().point is undefined.

[@surigarro]

Can u help me? please!! After Effects warning: array piece can't expand to more than one value Expression disabled.

[@Animoplex]

This is a very generic error, you'll need to provide your expression and the property you are adding it to.

[@surigarro]

@@AnimoplexThank you for your reply! But it does not work again. Can you take a look at the code? : array = [effect("a")(1),effect("b")(1),effect("c")(1),effect("d")(1)]; Array [array.length-2 ]; ------- In short, I want to make a color generator for certain colors that is selected through color control and after shifting the previously created slider, the colors should change. Can you help with this please! I will be very very grateful!

[@Animoplex]

This doesn't look like the complete expression, can you provide it? This is an array of generic effect references and an incomplete new Array() object. And the way you are using "array" as the variable name may trigger an error due to illegal reserved word use.

[@benorr8371]

Error at line 1 in property 'scale"of layer 2. SyntaxError: Unexpected identifier, an expression was disabled as a result of an error. pulling the pick whip of the scale of an image layer over to the slider of some audio keyframes to try to make the image bounce with the audio and i get this error. Any help with this one? Thanks

[@Animoplex]

You'll need to Convert Audio to Keyframes (in menu: Animation > Keyframe Assistant) first to gather the amplitude data. From there, you can move the keyframes to a slider and reference that via an expression. Audio layers do not produce any usable data on their own, you'll need to convert to keyframes or use a third party solution (like Sound Keys) to generate this data first. Hope this helps!

[@benorr8371]

@@Animoplex Thanks for the reply man, sorry i didn't explain it fully the first time. I already converted the audio to keyframes and it's still giving the error. Any thoughts?

[@Animoplex]

If you can share the expression here, that would be helpful.

[@dongren6966]

Helpp i have an error in my project but the orange bar wont show but when i press render, after effects flashed the orange error thing but it disapeared like 4 seconds later. And when it finished rendering the file failed to convert

[@Animoplex]

Can you share the expression you are using and the version of After Effects you are on? You can reply here.

[@BomanFPS]

after effects error asked to create unknown property of type

[@Animoplex]

Can you share your expression and provide what property you're adding it to?

[@kelorean159]

throw new Error("the value of var1 is :" + var1); //this is the most underused expression function

[@Animoplex]

That's a useful one, thanks for sharing!