A script from the aescripts marketplace automates the work you do inside one After Effects project, and it does that well. It does not decide where your data lives, who starts the job, what happens when row 212 breaks, or how the finished files get named and delivered. That gap is where most “automated video editing” projects stall.
We make Templater, which is sold through aescripts, so we see both sides of this. People find us after buying a handful of useful scripts and discovering that a pile of useful scripts is not a pipeline. This article sorts out what a script can carry, where a data-driven tool takes over, and how to use both together without paying for the wrong one.
What a script automates, and where its reach ends
Start with what a script is. In After Effects terms, it is a file of code that runs inside the application and acts on the project that is open. Dataclay’s own documentation describes the ExtendScript kind as scripts that interact with objects inside the project file, such as assets, compositions, layers, keyframes and effect parameters. That is a fair summary of the whole category. A script reaches into the open project and changes things in it, faster and more consistently than a person with a mouse.
The marketplace is full of tools built on that idea, and they are good at the jobs that fit it. Renaming a few hundred layers by rule. Spreading keyframes across a selection. Building a repeated structure of comps from a pattern. Cleaning up a project before it goes to a client. Each of these is a task a human could do and does not want to. The script does it in seconds and does it the same way every time. If your pain is that kind of task, a script is the right purchase, and nothing we make needs to replace it.
Two limits come with the category, and they are structural, not a matter of quality. We are describing general practice here, not any one product, so check any specific script against its own page.
The first limit is that a script works on the project you opened, at the moment you ran it. It has no built-in idea of a list of jobs. If you want forty versions of a video, something has to hand the script forty sets of values, one after another, and something has to start each run. A script author can write that loop, but then the author is building a batch system, and a batch system is a bigger thing than the script that was bought.
The second limit is the edges of the work. An editing script changes layers. It usually does not know what to do about a missing font, a footage file that moved, a headline that came in twice as long as the design expected, or a machine that went to sleep halfway through. Those are the events that decide whether a batch finishes overnight or leaves you with a mystery in the morning. They live around the edit, not inside it, and a script that only edits cannot see them.
Here is a concrete case. A producer at a company with a few hundred products wants a short video for each one. The design is done. It is one After Effects composition with a product name, a photo, a tagline and a short outro. She finds a script that duplicates a composition and swaps text from a list. It works on her test of five. Then she tries it on the real list and hits the second kind of problem. Some product names are three times as long as the sample and spill out of the frame. A handful of photo links point at files that do not exist. Two rows have a blank tagline. The script swaps what it is told to swap, so it produces a handful of broken videos and a few hundred decent ones, and nothing tells her which is which until she watches them all.
Tool Comparison
Scripts handle tasks; Templater runs a list
- What it works on
- A scriptThe project you opened, at the moment you ran it
- TemplaterA list, each row or JSON object becomes one video
- Who starts it
- A scriptYou, at your desk, with the project open
- TemplaterRuns without you; Bot starts when a row appears
- When content is too long
- A scriptSpills out of the frame
- TemplaterLayout rules scale and reposition dynamic layers
A script changes a project. Templater runs a process over a list.
None of that is the script’s fault. It did its job. What she needed was something that owns the whole path from the row to the finished file, and that something has to know about layout, missing media and per-row failures. That is a different product category, and it is worth being clear about the difference before you spend money.
One more distinction helps. Editing, in the sense of an editor choosing shots and shaping a story, is judgment. A producer who wants to turn raw interview footage into a tight story still needs a person making choices, and general practice says no script replaces that. Automation fits the other kind of work, the kind where the design is settled and only the content changes. When people search for “automated video editing,” they often mean the second kind without saying so. It helps to know which one you have, because the right tool for each is different.
How Templater is built, and why it comes through aescripts
Templater is an After Effects plugin and panel. You rig a template once by applying the Templater Settings effect to the layers that should change. Then you pair the project with a data source and let Templater produce the versions. The data source can be a Google Sheet, a tab-separated file exported from Excel, Numbers or Sheets, a JSON file, a remote JSON feed, or a QUE campaign. Each row, or each object in the JSON, becomes one video.
We sell it through our own site and through the aescripts + aeplugins marketplace. If you bought through the marketplace, our documentation walks through installing with their manager app. The details are worth knowing, because they are where people trip.
The manager app installs the standard node-locked build of Templater by default, for modern versions of After Effects. For After Effects 2022 and newer, you make sure your operating system account has administrator privileges, quit After Effects, open the manager and sign in, find Templater under All Products, and click Install. Then you follow the installation wizard. To check that it worked, you open After Effects and look in Preferences under Scripting and Expressions. The setting “Allow Scripts to Write Files and Access Network” has to be on. After that, Effect then Dataclay should show the Templater Settings effect, and the Window menu should show a Templater panel entry.
One step surprises people. The manager app cannot activate a Templater license key for you. You open the Licenses view in the manager, copy the key, then paste it into Templater’s Preferences, in the Licensing tab under Activation. Offline activation is also possible. It is a small step, and nobody enjoys finding out about it at nine in the evening before a deadline.
Two other facts about installing are worth a line each. After Effects 2021 and earlier needs a separate legacy installer, which the manager offers as a different download under the product. And the floating license build is a special case. The manager app installs the standard build by default, so a floating setup takes extra steps. More importantly, Templater does not work with the floating license server that the marketplace uses for many other plugins. Templater uses a different licensing mechanism, and floating licenses for it run on our own software, DataclayLM. If you are weighing a floating setup, read our piece on what a floating license is before you buy.
Templater also starts in trial mode. Our support lead has confirmed that the free trial includes all features, and that a watermark is added to dynamic layers. The one other limit is that replicating internally to the project file needs the “Send Replicates to Adobe Media Encoder” option enabled. The command line is available in the trial. That matters if your real question is whether a pipeline will work, because you can test the whole path, watermark and all, before you spend anything.
Now compare what Templater takes on with what the script in the earlier example could not. It takes on the row-to-composition mapping, because column names in your data source match the names of dynamic layers. It takes on layout. Layout rules scale and reposition dynamic layers when new data changes their size, so a long product name is adjusted instead of spilling out of the frame. One caution from our own documentation: layout rules do not work correctly on layer properties that have Separate Dimensions turned on. It takes on timing. Time Sculpting uses time-based rules to crop, trim, shift and stretch layers, so footage of different lengths does not wreck the design. It takes on missing media, with settings for how to handle footage references that fail.
It also takes on the work around the render. You can preview a composition with real data before you commit to a batch, and you can run spot checks that show how the data merges across many jobs. You can name outputs from the data source. You can send replicated compositions to Adobe Media Encoder. With the Bot edition, it watches a data source and handles rows by itself, reporting each row’s progress in a render-status column, with error codes written to the sheet when something breaks. The producer in our example would have seen which rows failed, and why, without watching anything.
That is the honest division of labor. A script changes a project. Templater runs a process over a list. Neither is better in the abstract. They answer different questions, and the mistake we see most often is asking one of them to answer the other’s question.
Your own scripts still have a place inside the pipeline
This is the part that gets lost when people frame the choice as scripts against a platform. Templater has a scripting layer of its own, and it exists because no template system anticipates every need.
Templater broadcasts events during its work. There is an event before and after the data is retrieved, before and after the whole batch, before and after each job, around footage download and footage processing, and around the update that applies your data to the layers. You can attach your own scripts to those events. Our documentation describes two kinds. Shell scripts handle things outside After Effects, like moving or transferring files, sending notifications, updating a database, transcoding output, or sending email. ExtendScripts handle things inside the project, and you write them in the ExtendScript language. Both kinds can listen to the same event, and when they do, the shell script runs first.
The ExtendScript side uses a $D object, which gives your code access to Templater’s internal memory. Through it you can read or change the batch of jobs, read or set a single job’s values, find the target composition, and harvest the dynamic layers by type. Our documentation shows two small examples that are worth repeating because they show the shape of the whole idea.
In the first, you add two columns to your data source that hold a start frame and an end frame for each row. A short ExtendScript registered on the After Update event reads those two values for the current job and sets the work area of the target composition to match. Each row then renders a different slice of the same composition, and the sheet controls it. In the second, a script registered to the Before Update event truncates any headline over ten characters and appends an ellipsis, before the text reaches the layer. Both are the kind of job a marketplace script might do by hand on one project. Here they run on every row of every batch, with no one pressing a button.
The shell side is the one that turns a finished render into something delivered. Our documentation notes that you can call a command line program such as ffmpeg from a script to merge, transcode or compress output. You can publish to an FTP site or a video platform, or send a message when a batch finishes. An after-batch event can even stitch every output into one video file. This is how a render becomes a delivered video without a person dragging files around.
Three trade-offs belong in the open. First, event scripts require the Bot edition, so they are not part of Rig or Pro. Second, some of the API methods return unexpected values or errors depending on which event the script is registered to, and our documentation has a troubleshooting page for scripts that misbehave or hang After Effects. A script that is fine on the Before Job event may fail on the Bot Enabled event, so test each registration. Third, as of Templater 2.7, the preference that passed job details as arguments to every command is deprecated. If you rely on the old behavior, your registered event scripts will fail until you append the arguments explicitly. If you inherit a pipeline, check that first.
For anyone who has already bought scripts, the practical point is good news. Your scripts are not wasted. A script that does useful work on a composition can often be registered to run on the right event, so it runs on each job instead of on your say-so. That depends on what the script does and how it is written, so test it on a small batch before you trust it on a large one. We have a longer comparison of building custom After Effects scripts in-house versus using Templater for teams that are deciding whether to write their own.
How to decide, and the bottom line
You can decide in a few minutes with three questions. They are the same questions whether you are shopping at aescripts, at our site, or anywhere else.
How many versions do you need, and do they come from a list? If the answer is one project, changed a few times by you, a script is almost always enough and the cheaper route. If the answer is a list that keeps growing, from a spreadsheet, a feed or a form, you have a data problem, and a data-driven tool earns its place. Our article on when it is worth automating your After Effects templates goes through this threshold in more detail.
Who starts the work, and when? If you start it, at your desk, with the project open, a script or the Pro edition fits. If it has to start when a row appears at three in the morning, or when a customer submits a form, you need a process that runs without you, and that is the Bot’s job. Our explanation of what an After Effects plugin is helps if you are still sorting the vocabulary between plugins, panels and scripts.
What happens when something fails? This is the question people skip, and it is the one that decides whether the system is trustworthy. A script that edits has no opinion about a failed row. A pipeline has to record the failure, keep going with the rest and tell you which row to fix. If the answer matters to you, favor the tool that reports per-row status. Before any large run, preview with real data. Our guide to Templater preview modes and spot checks shows how to catch the problems the producer in our example found the hard way.
If you do go with Templater, the order we suggest is simple. Install the trial and rig one template. Connect a small data source with a deliberately messy row or two. Run a spot check and read what it tells you. Only then decide which edition you need. Rig prepares projects and previews them. Pro adds batch replicate and render. Bot adds shell scripts, the command line, background operation and very large data sources. If you plan to extend it with your own code, the guide to Templater event scripts, the page on using ExtendScript with events and job details, and the one on using shell scripts with events are the places to start.
Before You Buy
Try Templater before choosing an edition
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Install the trialInstall the trial and rig one template.
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Connect a small data sourceConnect a small data source with a deliberately messy row or two.
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Run a spot checkRun a spot check and read what it tells you.
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Decide which edition you needRig prepares projects and previews them.
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Extend with your own codeIf you plan to extend it with your own code, the guide to Templater event scripts and the page on using ExtendScript with events and job details are the places to start.
Edition Breakdown
Three Templater editions, three capability levels
| Edition | Core capability | What it adds |
|---|---|---|
| Rig | Prepares projects | Previews them |
| Pro | Batch replicate and render | Builds on Rig |
| Bot | Background operation | Shell scripts, command line, very large data sources |
The bottom line is short. Buy a script when your problem is a repeated task inside one project. Use a data-driven pipeline when your problem is a list of versions that must come out reliably, with something watching for failures. Keep your scripts when you move to a pipeline, because the good ones can run inside it. And do not spend money on the second kind of tool to solve the first kind of problem, or the other way around. Matching the tool to the shape of the work is the whole decision.
Decision Guide
Three questions before you buy any tool
- Ask: how many versions do you need, and do they come from a list?
- Ask: who starts the work, and when?
- Ask: what happens when something fails?
We covered the buying questions above, but a few more come up every time. Here are the ones we hear most from people who found us through the marketplace.
Frequently Asked Questions
Can I buy Templater through aescripts and install it with their manager app?
Yes. If you bought Templater from aescripts + aeplugins, you can install it with their manager app. By default, the manager installs the standard node-locked build for modern versions of After Effects. The manager cannot activate your license key for you. You copy the key from the Licenses view in the manager, then paste it into the Licensing tab in Templater’s Preferences, under Activation. Offline activation is also available. After Effects 2021 and earlier uses a separate legacy installer.
Does Templater work with the aescripts floating license server?
No. Templater uses a different licensing mechanism than the one used by many plugins sold through that marketplace. If you want floating licensing for Templater, you install and manage it with our own software, DataclayLM, even if you bought through aescripts. The marketplace manager app can fetch the installers, but you run the separate floating-license installer yourself and enter your DataclayLM server addresses. Decide on standard or floating before you buy, because each key type matches a different build.
Can I try the whole pipeline before paying?
Yes. The free trial includes all features, with a watermark added to dynamic layers. The only other limit is that replicating internally to the project file requires the “Send Replicates to Adobe Media Encoder” option to be enabled. The command line is available in the trial too. That means you can test the full path from a data source to finished files, including a messy row or two, before you decide which edition fits.
Can a script I already own run on every row of a batch?
Sometimes. Templater lets you register your own ExtendScripts to run on its events, such as before or after each job, so a script that does useful work on a composition may be able to run on every row without you starting it. Whether yours can depends on what it does and how it is written. Event scripts require the Bot edition. Test the script on a small batch first, because some methods behave differently depending on the event you register it to.
What is the difference between an ExtendScript and a shell script in Templater?
An ExtendScript works inside the After Effects project. It can read or change job values, the target composition and layers, using the $D object. A shell script works outside After Effects. It can move or transfer files, transcode output with a tool like ffmpeg, publish to a destination, update a database or send a notification. You can register both on the same event. When you do, the shell script runs first.
Does automation replace a video editor?
Not for the kind of editing that takes judgment, such as choosing shots and shaping a story from raw footage. That is general practice, and it is why we describe Templater as a tool for work where the design is settled and only the content changes. A designer builds the template once, and the data supplies the versions. If your videos need a person to decide what goes in each one, that part stays with a person.
How do I know which rows failed in a large batch?
With the Bot, each row in your data source carries a render-status value. A row moves from ready to queued to processing to done. If something goes wrong, the Bot writes an error code to that row instead, such as one for a media problem or one for an After Effects error. That lets the rest of the batch continue and tells you exactly which rows to fix. Spot checks and previews before the run catch many problems earlier.
