A script you wrote yourself is the right tool when the job has one input, one output and one owner, and Templater is the right tool when the job is “make many versions of a design from data” and you would like to stop maintaining the machinery. Both are legitimate. The trouble starts when a narrow script quietly grows into a system.
We make Templater, so we are biased, and we will tell you where. We also come from the production world, so we know how much real work a good script does. This article is for the motion designer or technical director who has a folder of After Effects scripts that do real work, and who is wondering whether to keep going or switch.
What a custom script is good at
Start with the case for the script, because it is strong.
A script does exactly what you tell it and nothing else. If your task is “rename every layer matching this pattern” or “apply this set of effects to the selected layers” or “swap this one text field from a value in this file,” a script is a few dozen lines, you understand every one of them, and it costs you nothing to run. There is no product to learn, no license to manage, and no behavior you did not write.
Scripts also fit tasks that are about the project, not about data. Cleanup, organization, one-time conversions, internal conveniences for your own team. These are the places where Templater has no particular claim, because they are not about changing a design from a data source.
And scripts are yours. If your studio’s way of working is unusual, a script can encode it exactly. Nobody else’s assumptions are in the way.
A fair rule of thumb, and we are stating it as a general-practice view and not a statistic: if the task has a single input, a single output and one owner, keep it as a script. It is cheap, it is clear, and nobody needs us.
Where scripts start to strain
The pressure comes from a specific pattern. The script works for one case. Then someone asks for the same thing in a second language, or with longer names, or with a different aspect ratio, or from a spreadsheet instead of a typed value. Each request adds a branch. After a few months, the script is no longer a convenience. It is a system, and it is a system with one author.
Look at what a data-driven template actually has to handle, and compare it to what a first script does.
Text is the easy part to start and the hard part to finish. A script can set a text layer. But real data has names that run long, titles with line breaks, quotes and commas, and in some projects languages that read right to left. Templater’s page says it reads text as it appears in your spreadsheet, so commas, quotes, apostrophes and new lines are accepted, and right-to-left scripts are supported, provided the installed fonts have the glyphs you need. If you write your own, you will handle each of those the first time one shows up in production.
Layout is the next one. When a name is longer than the one you designed for, something has to scale, shift or wrap. Templater’s spatial layout rules adjust dynamic layers relative to their containing composition and their sibling layers, so you do not hand-align each version. In a custom script, that logic is yours to write, to test against every template you own, and to keep correct when a designer changes a composition.
Timing follows. Footage arrives at different lengths, and the design has to keep its integrity. Templater’s Time Sculpting, which is patented, uses time-based rules to crop, trim, shift and stretch layers. A script that handles a single known clip length does not handle a new one by itself.
Then there is everything around the edges. Previewing a composition with its data before rendering. Keeping a log of what happened so that a failure is debuggable. Custom output file names from the data. Switching which project template is used on a per-row basis. Sending a batch to Adobe Media Encoder. Running unattended and picking up new data when it appears. Each is a day or two of work to build yourself. Together they are the product.
A useful test is to ask what happens on the day a template changes. A designer opens the composition, renames a layer, nests something differently, and a script that addressed that layer by name or position now fails, sometimes quietly. In a rigged template, the mapping between data and layers is part of the project and the designer can see it. Surprises still happen, but they happen where the person who caused them can find them. That visibility is a large part of what separates a tool from a pile of scripts.
None of this means your script is bad. It means a data-driven pipeline is a different kind of problem from a one-off script, and it is easy to underestimate because the first version works.
A fair look at the other code-first route
Templater is not the only alternative to writing everything yourself, and you should know the others, because for some teams they are better.
Nexrender is an open-source, MIT-licensed Node.js project. Its page describes automating After Effects rendering for data-driven, template-based videos. A job is a JSON document that names the project file, the composition and the assets. It copies the project to a temporary folder, replaces assets and renders with Adobe’s aerender command-line tool, so the After Effects interface is never launched. A CLI runs single jobs. A server queues jobs over HTTP, and workers pick them up, which lets several machines act as a render farm. Assets can include data values and JSX scripts, and its page says you can swap footage, data and scripts per job without opening After Effects.
If your team is comfortable in Node and wants an open-source base it can read, change and run without a commercial plugin, that is a real fit. The page’s own text is mixed on licensing for the After Effects installation on worker machines, so read it carefully for your situation. Its page does not mention Google Sheets or spreadsheet connections, and that might matter to you if non-engineers keep the data, or it might not.
Where Templater differs is in where the work happens. Nexrender is a code-and-JSON workflow around a project file, run mostly outside the interface. Templater lives inside After Effects as a panel, where the designer rigs the composition, previews it with data and iterates visually. If the person who owns the templates is a designer and not a developer, that difference is often the deciding one. If the person is a developer, the other way around.
Neither is better in the abstract. They are built for different owners.
Can you do both?
Yes, and a lot of people do.
Templater can be extended with shell scripts and ExtendScripts that hook into events it broadcasts, and it has a command line interface and an Event Scripts API. So the scripts you wrote do not have to die. The part of your work that is really about data-driven versioning moves into Templater, and the specific business logic stays as scripts that listen for Templater’s events.
Our own examples of this are plain. Authenticating with a third-party database before data is extracted. Transforming data into a different format. Sending an email or text message when a render finishes. These are the kind of custom behaviors that a studio wants to keep, and they are what event scripts are for. Our GitHub repositories have sample scripts and documentation for Windows, Mac and Node.js, so you do not start from a blank file.
The shape of the arrangement is worth stating. Templater handles rigging, data mapping, layout, timing, previews, batching and logs. Your scripts handle what is specific to you. That division keeps your code small, and small code is code you can still understand next year.
A worked example
Picture a studio that makes sports highlight graphics. A technical director wrote a script that reads a text file of player names and stats and builds a lower-third for each. It works well for one league.
Then a second league arrives with longer names, stat lines of different lengths and a different aspect ratio. The script grows a case for each. A third request wants a version in another language. A fourth wants the graphics rendered overnight without anyone present, with the output named by player ID.
Each request is reasonable. What has changed is that the script now has to do layout, text handling, naming, unattended running and error reporting. It has become the thing the studio depends on, and the technical director is the only one who understands it. If that person goes on a long trip, the studio has a problem.
That is the moment to look at Templater. The designer can rig the lower-third and set layout rules. The data lives in a Google Sheet or a JSON file. Bot can run unattended, the output name comes from the data source, and logs record what happened. The technical director’s remaining scripts, such as a notification when the batch ends, attach through events. We described how this works in our post on how Templater automates sports video production.
It is not free of effort. The designer has to learn rigging, and the studio has to buy the right edition. But the effort goes into design and into the data, which are the studio’s real work, and not into machinery.
What you give up and what you keep
Moving work into a product is a trade, and it should be described as one.
You give up some directness. A script does what it says on the page. A product has behavior you learn from documentation and from using it, and sometimes you will find that it does something you did not expect. We try to make that behavior visible. Templater keeps log files you can inspect for full transparency about what it is doing at any moment, and you can preview a composition with its data before you render. Still, it is a larger thing than a script, and you will spend an afternoon or two learning it.
You also take on a license. Templater comes in three editions, and the licensing guide explains standard and floating licenses. Our FAQ is open that Templater is priced on the value it provides and the cost of ongoing development and support, and we would rather you see that on our pricing page than read a figure in an article.
What you keep is more than people expect. Your design stays in After Effects. Your scripts can stay, attached through events. Your data stays where it is, in a Google Sheet, a tab-separated file or a JSON feed. And the knowledge your team has about how a composition should behave goes into rigging and layout rules, where a designer can see it and change it, and not into code that only one person can read.
There is one more thing you keep, which is the option to leave. A rigged composition is still an After Effects project. If you decide later to move to a code-first renderer or back to your own scripts, the design work is not trapped.
How to tell when it is time
There are a few signals, and any two of them together are a good reason to look.
More than one person depends on the script. Anyone other than its author is now exposed to whatever it does.
It handles more than one template, or one template with many data shapes. That is where layout and timing logic start to multiply.
It has to run without you. Unattended running means error handling, logging and queue management, and those are products’ worth of work.
It touches data from outside your own machine. Spreadsheets, feeds and apps each have quirks that a product has already met.
You find yourself fixing it in the middle of a deadline. If maintenance competes with production, the script has stopped saving you time.
If none of those apply, leave it alone. A script that is working, small and understood does not need replacing.
Practical next steps
Take stock first. List your scripts and note, for each, what it does, who depends on it and how often it breaks. Many will turn out to be fine. A few will be obviously overgrown.
Then pick the overgrown one and try it in Templater. The trial is 30 days and includes a fully featured Bot, so you can run the real workflow, and a refund within 30 days of purchase is available if it does not suit you. If you want a place to start, read our guide to making hundreds of personalized videos from data, and our post on batch rendering in After Effects for the render side. If rendering speed is your concern, see our tips for speeding up After Effects exports, and our licensing guide to pick between Rig, Pro and Bot.
The bottom line
Keep your own scripts for the narrow, stable jobs that are truly yours. Move the repeated work of making many versions from data into Templater, where layout, timing, previews, batching and logs are already built. Keep the scripts that encode your studio’s specific logic, and attach them to Templater through events. And if your team prefers code and JSON over a panel in After Effects, look seriously at Nexrender before deciding anything.
The script is not the enemy. The unnoticed system is.
Here are the questions designers and technical directors ask us most when they are deciding whether to keep their own scripts.
Frequently Asked Questions
Do I have to throw away my existing After Effects scripts?
No. Templater can be extended with shell scripts and ExtendScripts that hook into events it broadcasts, and it has a command line interface and an Event Scripts API. Your business-specific scripts can attach to Templater’s events while Templater handles rigging, data mapping, layout, batching and logs. Our GitHub repositories include samples for Windows, Mac and Node.js.
What does Templater do that a simple script does not?
It maps spreadsheet or JSON data to composition layers, applies spatial layout rules, applies patented Time Sculpting to crop, trim, shift and stretch layers, supports international languages including right-to-left, previews compositions with data, logs its activity, names outputs from your data source and batch renders or replicates master compositions. Bot runs the process unattended. A script can be written to do each of these, but each is work to build and maintain.
Is Templater always better than writing my own?
No. For a narrow, stable task with one owner, such as renaming layers or applying effects, a script is simpler and costs nothing. Templater earns its place when the job is making many versions from data, when more than one person depends on the result, or when it must run unattended.
How is Templater different from Nexrender?
Nexrender is an open-source Node.js project that renders After Effects projects from JSON jobs using aerender, with a server and workers for queues. Templater is a plugin inside After Effects where designers rig compositions and preview them with data. Nexrender suits a developer-owned, code-first workflow. Templater suits teams where designers own templates. Read each project’s own page for details and licensing.
Which Templater edition would replace my scripts?
Rig prepares a project for dynamic content and previews it with data. Pro adds batch rendering and batch replication from your data source. Bot adds automation, checking for incoming data and command line control. Which you need depends on whether you want to prepare, batch or run unattended. See our licensing guide for the breakdown.
Can I try it on one of my own templates first?
Yes. There is a 30-day free trial that includes a fully featured Bot, so you can run a real batch on your own template and data. If you buy and it does not suit you, contact us for a refund within 30 days of purchase.
Can Dataclay write the scripts I need around Templater?
Yes. We offer scripting engagements for people who lack the experience, the time, or both. Past examples include authenticating with a third-party database before extracting data, transforming data into another format, and sending an email or text when a render completes. Engagements are quoted individually, so contact us with the details.
