The Text Selector Expression is arguably the most elusive Adobe After Effects Feature and yet it's its most powerful Text Feature
Roland Kahlenberg April 27, 2025
0 Comments
This blog aims to provide insights and samples into the mystical world of Text Expression Selectors. Readers are assumed to know how to commit to basic application and adjustments using the Text Tool.
Text Expression Selectors are like mysterious orbs in the sky that everyone sees but only few speak about.
With the Range and Wiggly Selectors, we take note of two critical observations
(1) what gets selected is quite easy to manage and
(2) how each selection is affected by Text Animator Properties is not as easy to manage.
And it is the latter where the Text Expression Selector shines.
Before we proceed, let's define Text Objects Text Object : A group of one or more text characters defined by the Based On Parameter. The Based On Drop Menu provides 4 Group Types Characters, Characters Excluding Spaces, Words and Lines.
You may also create your own Text Objects using any one of these as the basis for grouping.
With Range Selectors, how each Text Object is affected and how it animates involves a complex formula comprising of the parameters in the Range Selector and Advanced Sections of the Text Animator Group.
With the Expression Selector, it's actually a lot easier to manage how Text Objects are affected by the Text Animator Property. The tricky part is that you have to write your own selection and animation functions which are built-into Text Expression selectors that others provide for free or as a paid product.
What you will want to take away from this blog is that Text Expression Selectors allow for more control over how each Text Object is affected by Text Animator Properties.
Let's take a look at a few Text Expression Selector examples because showing by example is always a good way for visual stuff.
What I'd like you to take away from watching this video is to appreciate how text characters are selected and animated with Expression Selectors and how the results here differ from results obtained with using Range and Wiggly Selectors.
Some contents or functionalities here are not available due to your cookie preferences!
This happens because the functionality/content marked as Google Youtube uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
Text Expression Selector Samples deployed using AeXpression Notepad, a soon-to-be-released After Effects Script UI. Can't see this video? Click here! If you are in Safari, hover over Safari in your menu, click settings for creativecow.net and toggle the Auto-Play to Allow All Auto-Play .
To add some brain work into the mix, pause at appropriate samples and ask yourself how you would re-create a sample using the Range and/or Wiggly Selectors.
Chances are you will not be able to replicate most, if any of these Text Animations if you used Range and/or Wiggly Selectors. And with this, the motivation is for you to start venturing into the world of Text Expression Selectors, if you have not done so.
Some contents or functionalities here are not available due to your cookie preferences!
This happens because the functionality/content marked as Google Youtube uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
Samples of After Effects Expression Text Selector. These and many others will be released either together with AeXpressions NotePad or shortly thereafter. Can't see this video? Click here! If you are in Safari, hover over Safari in your menu, click settings for creativecow.net and toggle the Auto-Play to Allow All Auto-Play .
Text Selectors in After Effects Most After Effects users are familiar with its Text Tool and its Range and Wiggly Selectors. However, only a tiny percentage have used the Text Expression Selector.
Advanced After Effects users will have used Expressions in their Range and Wiggly Selectors and even the Source Text Property. Now, let's take a look at the Text Expression Selector.
Text Expression Selector Default Text Expression Selector When you first apply the Text Expression Selector to a Text Animator Group, this is the expression that is applied -
selectorValue * textIndex/textTotal
Unfortunately, for almost every user that sees this for the first time, it's a cryptic line of code. So, let's try to clear this up what you see are essentially three reserved variables; they are functions built into the After Effects Expression Engine.
Before we proceed, let's define these variables/functions
selectorValue * textIndex/textTotal
selectorValue : This is defined as a percentage of the value of the Text Animator Property you apply to the Animator Group.
The selectorValue * ratio is calculated for each Text Object on every frame. I use two different ranges for the selectorValue : 0 and 100 or -100 and 100. They provide different results and you should experiment further appreciate their nuances.
The ideal way to experiment is to link/replace selectorValue with a Slider Control while leaving the other variables in the default expression as is.
There is yet another range that is useful and this accounts for the number of Text Objects available. As this is an introductory article, I will leave this use-case for later.
textIndex : This defines the index of a single Text Object regardless of the type of Text Object selected with the Based On Drop Menu. Each Text Object receives a distinct index.
textTotal : This is the total number of Text Objects based on the Based On Parameter.
Now, let's proceed with some hands-on work
Most recent headlines
05/01/2027
Worlds first 802.15.4ab-UWB chip verified by Calterah and Rohde & Schwarz to be ...
04/08/2026
Dalet, a leading technology and service provider for media-rich organizations, t...
04/07/2026
April 7 2026, 19:00 (PDT) Detective Conan: Fallen Angel of the Highway Opens in...
01/06/2026
January 6 2026, 05:30 (PST) Dolby Sets the New Standard for Premium Entertainment at CES 2026
Throughout the week, Dolby brings to life the latest innovatio...
13/05/2026
New Adobe Premiere Color Grading Mode Accelerated on NVIDIA GPUs
Joel Pennington May 13, 2026
0 Comments
New NVIDIA RTX-accelerated features streamlin...
13/05/2026
Grass Valley announced that dB Broadcast has delivered new IP-based outside broadcast (OB) trucks for Cloudbass, featuring Grass Valley LDX 100 Series cameras a...
13/05/2026
Ikegami will exhibit the latest additions to its wide range of broadcast production cameras, control units, viewfinders and monitors on stand 5D3-1 at Broadcast...
13/05/2026
FISE, working with the founding members of the XR Sports Alliance (XRSA), Accedo, Qualcomm Technologies, Inc. and HBS, have collaborated to develop an immersive...
13/05/2026
Canon Unveils New EOS R6 V Full-Frame EOS Camera and RF20-50mm F4 L IS USM PZ Bu...
13/05/2026
Boston Conservatory at Berklee Honors Beth Morrison and Moses Pendleton at Comme...
13/05/2026
Share
Copy link
Facebook
X
Linkedin
Bluesky
Email...
13/05/2026
Share
Copy link
Facebook
X
Linkedin
Bluesky
Email...
13/05/2026
Share
Copy link
Facebook
X
Linkedin
Bluesky
Email...
13/05/2026
Share
Copy link
Facebook
X
Linkedin
Bluesky
Email...
13/05/2026
Share
Copy link
Facebook
X
Linkedin
Bluesky
Email...
13/05/2026
Creative software developer Foundry today announced the latest developments on Nuke Stage. A purpose-built application for end-to-end virtual production and in-...
13/05/2026
A definitive portrait of one of Ireland's most influential musicians
New TV documentary airs Monday 18 May on RT One and RT Player at 9.35pm
Watch the...
13/05/2026
Agentic AI is changing the way users get work done. Following the success of OpenClaw, the community is embracing new open source agentic frameworks. The latest...
13/05/2026
Reinforcement-learning agents - AI systems that learn by trial and error - can c...
12/05/2026
Beyond the Hype: A Strategic Post-Hoc Analysis of NAB 2026 If NAB Show 2026 had an underlying theme, it was a quiet, industry-wide pivot from the high-energy sp...
12/05/2026
Guntermann and Drunck (G&D), a Panoptec Technologies Group company, and CT Square, led by Chandresh Shah, have announced a joint venture to distribute G&D and V...
12/05/2026
With 30 days until the start of the FIFA World Cup 2026, Telemundo, the exclusive Spanish-language home of the tournament in the United States, has announced th...
12/05/2026
The NHL has announced the return of Stanley Pup for its third consecutive year, a 90-minute special featuring adoptable rescue dogs competing on a miniature rin...
12/05/2026
NBCUniversal presented its 2026 Upfront to advertisers at Radio City Music Hall, detailing upcoming programming across NBC, Peacock, Bravo, and Versant properti...
12/05/2026
FOX Sports has announced funding for the Fandom and Social Connection Initiative at Harvard Kennedy School's Shorenstein Center on Media, Politics, and Publ...
12/05/2026
TNDV and Live Media, both divisions of Live Media Group, supported live broadcast coverage around NCAA Final Four weekend in Indianapolis, including the March M...
12/05/2026
The European Football Alliance (EFA) has announced a content distribution agreement with Fubo Sports Network, the free ad-supported streaming TV (FAST) channel ...
12/05/2026
For the first time, Spanish-speaking fans in the U.S. will have two separate tel...
12/05/2026
CP Communications led a comprehensive spectrum management initiative on behalf of Churchill Downs during Kentucky Derby week, coordinating RF assets across the ...
12/05/2026
LiveU has announced a strategic partnership with DRONERESPONDERS, a 501(c)3 non-...
12/05/2026
Open Broadcast Systems has announced that BMC TV, a specialist in IP transport of broadcast content, has selected the Open Broadcast Systems 5G Flyaway solution...
12/05/2026
NEP Europe, part of NEP Group, has announced it will deliver broadcast solutions...
12/05/2026
Grass Valley has announced continued collaboration with Ravensbourne University ...
12/05/2026
Stats Perform has announced the launch of Opta Pulse, an AI-assisted video creation and distribution platform for leagues, rights holders, and broadcasters. The...
12/05/2026
FOX Sports has announced a collaboration with Sesame Workshop to integrate Sesame Street characters into FOX Sports' FIFA World Cup 2026 programming. Conten...
12/05/2026
To date, NHL Productions has produced 19 broadcasts with commentary in American Sign Language
NHL in ASL (American Sign Language) may be just one show, but the...
12/05/2026
Google's Brian Albert: creators, athletes, highlights, nostalgia, second-scr...
12/05/2026
A still from Past Lives by Celine Song, an official selection of the Premieres program at the 2023 Sundance Film Festival. (Courtesy of Sundance Institute | p...
12/05/2026
Spotify is where fans and artists come together, turning discovery into somethin...
12/05/2026
Features patented Marco-MMC clocking technology
Black Lion Audio's latest release combines the company's expertise in clocking with their renowned p...
12/05/2026
New Track Panel, sequencer upgrades & more
Following their recent public beta release, Reason Studios have announced the full release of Reason 14. With the...
12/05/2026
One month to go! SBS reveals expansive FIFA World Cup 2026 lineup beyond the pi...
12/05/2026
Rohde & Schwarz presents its advanced solutions for power electronics testing at...
12/05/2026
aconnic AG (ISIN: DE000A0LBKW6), Munich, has developed a modified fund raising p...
12/05/2026
Share
Copy link
Facebook
X
Linkedin
Bluesky
Email...
12/05/2026
Tyrell Corporation, specialists in high-end live sports and entertainment broadcasts, was tasked with delivering compelling broadcast coverage of premier equest...
12/05/2026
Registration is now open for IBC2026 as the global media, entertainment and technology community prepares to converge on the RAI Amsterdam from 11 14 September ...
12/05/2026
Ross Video, a global leader in live video production technology, will present its latest innovations and integrated production workflows at BroadcastAsia 2026, ...
12/05/2026
500 selected leaders from around the world across start-ups, corporates, and venture capital. Over 50bn in assets under management among attending investors, a...
The Text Selector Expression is arguably the most elusive Adobe After Effects Feature and yet it's its most powerful Text Feature 
