Back to Blog Index

After Effects 101: Basic Keyframe Types

No items found.

An Overview of the Different Keyframe Types in After Effects.

If you're reading this than you probably have realized that keyframes are key (see what I did there?) for animation in After Effects. However, there is a lot more to keyframes than simply hitting a stopwatch or adjusting a value. In this exciting article-extravaganza we'll take a look at the ins-and-outs of keyframes in After Effects. We'll cover all sorts of nerdy terms like spacial and temporal interpolation. But don't worry it's easier to understand than you think.

Trust me, I get it. The verbiage used to explain things in After Effects can be hard to wrap your head around. But I know with a little patience (and a little bit of magic) you can figure this out.

Let's tackle interpolation first. Once we have a firm understanding of interpolation we’ll get into the different keyframe types we see in our timeline.

Understanding Interpolation in After Effects

In After Effects interpolation how the software calculates the values between two points. Meaning, that if you animate an element using keyframes, After Effects determines what the motion of that element is between the keyframes you set.

Now, interpolation can be spatial, and or temporal. So let’s quickly break down both of these terms and see what each is doing for us.

SPATIAL INTERPOLATION

Spatial Interpolation relates an element’s motion path. By utilizing spatial interpolation you change the path of keyframes from harsh to smooth or vice-versa. After Effects will show you spatial interpolation by adding in a dotted red line where the line itself deals with the space (motion path) and the time (temporal interpolation) is represented by dots.

TEMPORAL INTERPOLATION

While spatial dealt with space and motion, temporal deals with changes to the time at which an element or layer will be at a certain point or points. Utilizing this interpolation can also help to smooth the motion of your animation out by giving the movement a more natural look.

Adjusting the temporal interpolation. Notice how the number of dots on the line increases. These dots represent the number of points over time. More dots = Slower Movement.

Okay, so now we have a better understanding of interpolation, but what about a motion path? What does that mean exactly? Well, it's exactly what you think!

Understanding Motion Paths

Whenever you set two position keyframes, After Effects creates a path of motion between these keyframes. The created motion path dictates the movement of the element, and it can be adjusted by adding additional keyframes, or by adjusting the curve of the path. More on that below.

Adjusting the motion path of an element.

The Five Basic Keyframe Types and Their Icons

So now that we have a clear (or at least semi-opaque) understanding of interpolation and motion path, let's take a look at the different types of keyframes available to us in After Effects. Each one of these keyframe types comes with their own unique keyframe icon.

1. LINEAR KEYFRAMES

This is the most basic form of interpolation in After Effects and it utilizes a straight uniform rate of change between two keyframes. This keyframe type is indicated by the default diamond icon. Remember that this keyframe type is always abrupt and very mechanical. Most professional animators and Motion Designers will not use linear keyframes very often. For more on that check out the 12 Principles of Animation.

Standard linear interpolation. Notice the completely straight movement.

Linear interpolation is indicated by a diamond shaped keyframe, this again is the most common of keyframes and the type that you will automatically start with in After Effects.

2. Auto Bezier

Auto bezier takes linear keyframes and smooth out the rate of change by automatically generating curves to the keyframes. This allows the element to move more fluidly. To change a linear keyframe to an auto bezier keyframe, just hold down the Cmd (Ctrl) key on your keyboard and then click the keyframe. Now, your linear keyframe is an auto bezier keyframe. If you want to revert it back to linear just repeat the process.

Note: This is only adjusting spatial interpolation (motion paths).

Holding down Cmd⌘ we create auto bezier.

Auto Bezier interpolation is indicated by a circular shaped keyframe , and automatically changes the directional handles of your elements to smooth out the motion, this way it doesn’t feel as mechanical. However, just remember, if you move an auto bezier keyframe it changes to a continuous bezier, which we’ll take a look at next.

3. CONTINUOUS BEZIER

Whereas auto bezier smoothed out the rate of change automatically, continuous bezier does so manually. To do this you need to highlight the keyframes you want to change, then press Cmd (Ctrl) + Shift + K on your keyboard. A information box will then come up allowing you to manually adjust the interpolation.

Continuous Bezier interpolation is indicated by an hourglass keyframe. You would see this keyframe type when adding an effects or additive such as the keyframe assistant “Easy Ease” option. This can be added by selecting keyframes in the timeline and then right-clicking on one of those keyframes. Then go to Keyframe Assistant > Easy Ease.

4. BEZIER KEYFRAMES

Bezier is where you have full manual control and functionality over the motion path and or the value graph. In order to adjust this manually you need to access the motion path of your element within the composition panel. Or, you can adjust things by accessing the graph editor, located in the timeline panel.

Creating a bezier doesn’t change the keyframe type or icon, as you are directly adjusting the path between two keyframes. See below for how to access and adjust both the motion path or the graph editor.

5. HOLD KEYFRAMES

A hold keyframe does exactly what the name implies, it holds a the layer on a specific keyframe. This is great for freezing footage.

Hold Interpolation is indicated by a square shaped keyframe, you can apply this type of interpolation by selecting your layer and then going to Layer > Time > Freeze Frame.

SO WILL I REALLY USE ALL OF THIS?

I can say without hesitation that you’ll use these various types of interpolation and keyframes very consistently in your  work. However, if you want to really get the most out of your animation movements you definitely need to check out our Graph Editor tutorial for After Effects.

Dive into real-time 3D with our Unreal Engine beginner's course by Jonathan Winbush. Master importing assets, world-building, animation, and cinematic sequences to create stunning 3D renders in no time! Perfect for motion designers ready to level up.

Explore this Course

Unlock the secrets of character design in this dynamic course! Explore shape language, anatomy rules, and motifs to craft animation-ready characters. Gain drawing tips, hacks, and Procreate mastery (or any drawing app). Ideal for artists seeking to elevate their craft.

Explore this Course

Elevate your freelance motion design career with our guide to client success. Master a repeatable method for finding, contacting, and landing clients. Learn to identify prospects, nurture leads, and develop a thriving freelance philosophy amidst chaos.

Explore this Course

Rev up your editing skills with After Effects! Learn to use it for everyday needs and craft dynamic templates (Mogrts) for smarter teamwork. You'll master creating animated graphics, removing unwanted elements, tracking graphics, and making customizable templates.

Explore this Course

Stand out with Demo Reel Dash! Learn to spotlight your best work and market your unique brand of magic. By the end, you'll have a brand new demo reel and a custom campaign to showcase yourself to an audience aligned with your career goals.

Explore this Course

Illuminate your 3D skills with Lights, Camera, Render! Dive deep into advanced Cinema 4D techniques with David Ariew. Master core cinematography skills, gain valuable assets, and learn tools and best practices to create stunning work that wows clients.

Explore this Course

Master After Effects at your own pace with Jake Bartlett's beginner course. Perfect for video editors, you'll learn to create stylish animated graphics, remove unwanted elements, and track graphics into shots. By the end, you'll be equipped for everyday AE needs and more.

Explore this Course

Revolutionize your Premiere workflow with customizable AE templates! Master creating dynamic Motion Graphics Templates (Mogrts) in After Effects to speed up your team's work. By the end, you'll craft easily-customizable templates for seamless use in Premiere Pro.

Explore this Course
Your download is in your inbox!!!
Check your email (spam, too) for the download link!
Please check the spam folder if you don't see the message within a minute or two. Google likes to hide your downloads, sometimes.
Oops! Something went wrong while submitting the form.