This link seems down again! cc @Jessica McMillan  ... View more

If you know the documentation is wrong, please open a PR to fix what you've found! ... View more

The actual way you'd write it depends a lot on what's going on in your scene. The simplest way, though, would be to first pickwhip to the property you want to mirror, and then add "* -1" to it. So: thisComp.layer("Other Layer").transform.position * -1 In plain english, this is saying "Take _that_ value, and give me the negative value of it" -- but in a real scenario, you'd maybe only want to flip around the X, or just the Y, etc. Depends on what you're doing! ... View more

+1 to Flow's easing expressions; this was a major reason why Flow was created in the first place We give you the 25 presets each as an easing function, as well as the ability to use your custom curve in expressions. ... View more

There isn't a way, short of potentially setting up the effect with the right dropdown, saving it as a preset ffx, and applying that. Maybe. ... View more

Great! Back to my original question: Why not release some public info about it? An info page, readme, API guide? ... View more

Yes. FFX files are forwards-compatible, meaning they'll work in any version newer than the one you saved them in. ... View more

You were clear, I've just never seen this before and I can't reproduce it in any version of AE.  See: Imgur Can you manually add a stroke layer style to a layer, and take a screenshot of what that looks like? ... View more

Why not release some public info about it? An info page, readme, API guide-- any sort of info whatsoever, before asking for money? ... View more

Trent's is the real answer. It's in the CC desktop app, but you need to enable that preference. Incidentally, ESTK is being sunset in lieu of a plugin for Visual Studio Code. See more details here: https://medium.com/adobetech/extendscript-debugger-for-visual-studio-code-public-release-a2ff6161fa01 ... View more

Can you show a screenshot of this happening? What version of AE? I've never seen this behaviour. ... View more

As far as I know, command IDs are the only way to do it. I can confirm that the above method works from AE 16.1 (CC2019) down to AE 11.0 (CS6), though. That's at least seven years of versions covered ... View more

From my understanding, layer styles can't be enabled that way; you'd need to go about it by executing the command ID-- var commandID = app.findMenuCommandId("Stroke"); app.executeCommand(commandID); ... View more

So this isn't straightforward to do. The best way would be to just _not_ have that property in time remap, or control this in a different way; what you're trying to do is difficult and not the best approach. What about: have a slider in the ring comp where you have the timing laid out instead of Time Remap On the ellipse, use `value.valueAtTime(slider)` so it gets the current value, but at the slider's time Then the Trim End you have linked to the slider. Would that approach solve this? ... View more

Well! In that case, pickwhip the time remap property and use that for valueAtTime? ... View more

The comp itself doesn't have any sense of "time" -- what you could do is look at the offset in time between one comp and the other, and add or substract that to the valueAtTime. That is, if the precomp starts 5 seconds before the main comp, then you'd use `valueAtTime(time - 5)`. I go into this a little bit here: https://zacklovatt.com/sync-precomp-audio/ ... View more

While a little old, Victoria's posts on getting started with CEP development is great: Getting started with HTML5 (CEP) Panels for After Effects | Victoria Nece This is also a wonderful book-- focused around PS, but still applies to AE: http://www.htmlpanelsbook.com/ ... View more

Right... the above is just a sample approach, as I mentioned, not the full solution to what you're doing. In what I provided, you'd need to select the properties in AE that you want to check, and then run it, and it should write the name of the property with the earliest key. To modify it to your needs: have it work on any selected layer create an array of each of the properties in each animator you want to check pass that array into the function, and it'll get you the property with the earliest key ... View more

You're putting this expression on the slider, not on the Position of a layer! That's why you're seeing the error. At the very last line, you give it [x, value[0]] -- an array that contains two dimensions (X and Y). However, the Slider that you're putting the expression on, is only expecting a single value, not this 2d coordinate. Thus, remove the expression from the slider and apply it to the layer's position instead, and it should all work out. ... View more

My approach to this would be a bit different. Instead of doing the same block of code for each property, I'd make a single function to find the earliest property within a set array of properties, and return that. Here's my approach: (function() {   /**   * Returns the property in the array with the first key   *   * @param {Property[]} properties - Array of properties   * @returns {Property}            - Property with earliest key   */   function getPropWithEarliestKey(properties) {     var earliestProperty = properties[0];     var earliestKeyTime = Number.POSITIVE_INFINITY;     for (var ii = 0, il = properties.length; ii < il; ii++) {       var prop = properties[ii];       if (prop.numKeys === 0) {         continue;       }       if (prop.keyTime(1) < earliestKeyTime) {         earliestKeyTime = prop.keyTime(1);         earliestProperty = prop;       }     }     return earliestProperty;   }   var comp = app.project.activeItem;   var props = comp.selectedProperties;   var earliestProp = getPropWithEarliestKey(props);   $.writeln(earliestProp.name); })(); Note that I'm just getting the selected comp properties in this use case, but you can replace that with any array of properties. Also-- while not about the code itself, your code styling is very inconsistent making it difficult to read and work with. If you're having trouble trying to parse where an issue may be, or what code blocks are being triggered, it may be worth cleaning it up to a (much) more readable format in line with code samples you'd see online. The same applies to naming of variables; I'd assume "animRot" would be the rotation animator property, not the number of keys on the property. ... View more

Good news! This is very doable via extendscript. I have a roundup article here of places to learn the basics of scripting: http://zacklovatt.com/ae-scripting-resources/ Once you've made some headway, if you have specific questions (or need more guidance) feel free to post again, or follow up in this thread! ... View more

You can try wrapping the code block in app.beginSuppressDialogs() and app.endSuppressDialogs(), but I'm unsure whether they'd work in this case; they're selective in what they do and don't suppress. Generally though you may be out of luck! ... View more

You're posting in the Scripting forum (centered around Extendscript), not the SDK Plugin forum (centered around C++). Try posting here: After Effects SDK ... View more

How are you calling the .bat? ... View more

Not natively, though there's nothing stopping you from writing in ES6 and transpiling down as needed. Most of my CEP work these days uses Typescript+React, bundled via Parcel. I use this solution to start new projects with this stack. ... View more

Could you post a screenshot of the asset in AI, and another of it in AE? Showing the full app (not just the art) would help so we can try to figure out what's going on. Ideally, uploading both the .ai and .aep files would be amazing if possible.   ... View more

I've never seen a way to access that via scripting. ... View more

This is a commercial solution, but Easy Bake was made to bake expressions in bulk. (In the interest of transparency, I co-developed this and have a vested interest in its success   ) ... View more