How to Edit Animation Curves in Blender: Keyframes and Graph Editor

What you’ll learn in this guide

In an architectural animation, setting only the start and end values for a camera, object, or other property may not be enough. When the motion accelerates, slows down, or stays constant between those values also affects how the result is perceived. In Blender, keyframes store property values at specific frames; the values in between are calculated through interpolation. The Graph Editor lets you view and edit the curve that represents this change.

This guide covers the relationship between keyframes and F-Curves, how to find and view curves in the Graph Editor, handles and interpolation, and how to set a preview range for repeatedly reviewing part of an animation. It’s intended for Blender users who want to assess motion more deliberately in architectural visualization. The aim isn’t to prescribe a particular camera move, but to explain how to read and edit existing animation curves.

Requirements

• Blender must be installed. The source materials are the “latest” pages of the Blender Manual; they don’t specify a particular software version number.

• You’ll need a scene or object to work with that has at least some properties keyed. A keyframe records a property’s value at a specific frame.

• Familiarity with basic animation concepts is helpful for following the relationship between time and value in the Graph Editor and Dope Sheet.

• The sources don’t specify any account requirements.

The sources don’t provide step-by-step instructions for adding a keyframe to a property. The steps below therefore focus on inspecting and editing existing keyframes.

Step-by-step: Editing animation curves

1. Find the curve for the property you want to edit

Right-click an animated property and choose “View in Graph Editor” to display its curve in the Graph Editor. This lets you focus on the curve for the property you’re working on instead of searching through the channel list. The source document notes that this option is in the property’s right-click menu.

In the Graph Editor, the curve shows how the property’s value changes over time. The horizontal axis represents time, while the vertical axis represents value. Keyframes define specific values on the curve; the values at the frames between them are calculated by interpolating between the keyframes.

2. Adjust the view and focus area

Use the mouse wheel to zoom in and out, and the middle mouse button to pan. Use “Frame Selected” to fit selected keyframes in the view, or “Frame All” to view all keyframes. To isolate curves, “Local View” displays only the selected F-Curves; use it again to return to the normal view.

If you’re reviewing a short section of motion rather than the entire scene, define a preview range with “Set Preview Range.” When active, playback is limited to that section. Use “Set Preview Range to Selected” to set a range that includes the selected keyframes; the option to remove the range is called “Clear Preview Range.”

3. Edit keyframes and handles

Keyframes on the curve define the property’s values at specific frames. The handles around each keyframe affect the shape of the curve at that point. Editing the handles changes how the value transitions between two keyframes.

In the Graph Editor, “Show Handles” toggles handle visibility. The “Only Selected Keyframes Handles” option displays handles only for selected keyframes. When changing the curve’s shape, keep the time and value axes distinct: moving a keyframe horizontally affects its timing, while moving it vertically affects the property’s value.

The navigation tools are also useful when selecting multiple keyframes. “Frame Selected” fits the selected points in the view; zooming and panning make it easier to inspect the relevant section of the curve. To assess the transition between selected keyframes, check not only the endpoints but also the shape of the curve between them.

4. Evaluate interpolation and handle behavior

Interpolation determines how the transition from one keyframe to the next is calculated. Blender’s documentation lists options such as Constant, Linear, Quadratic, and Bézier. Constant keeps values fixed until the next keyframe, while Linear produces a straight-line change. Bézier curves are shaped using handles.

The Dope Sheet can help display the interpolation type and Bézier handle type for keyframes. The handle types listed in the documentation are Auto Clamped, Automatic, Vector, Aligned, and Free. The positions of Free and Aligned handles can be adjusted manually in the Graph Editor; Vector, Automatic, and Auto Clamped handles are calculated automatically. Interpolation, handle type, and extrapolation settings can also be changed in the Dope Sheet.

When editing a curve for the first time, observe the effect of automatic handles. With “Auto Handle Smoothing” set to “None,” only nearby keyframes are taken into account; “Continuous Acceleration” considers a wider section of the curve. The source document notes that the latter can produce smoother results, but a change at one keyframe may affect a wider area, and Automatic handles may be more prone to overshoot.

Common mistakes

• Looking only at keyframe positions without viewing the curve: The F-Curve determines the motion between keyframes. Check the whole curve when assessing the transition.

• Mixing up the time and value axes: The horizontal axis represents time; the vertical axis represents the property’s value. Check which axis you’re changing as you edit.

• Looking for the effect of a keyframe edit only nearby: With Continuous Acceleration, changes may affect a wider section of the curve.

• Forgetting that a preview range is active: Playback may be limited to the defined preview range. Clear it if you need to review a wider span of time.

• Trying to inspect every channel at once: Right-clicking the relevant property and viewing it in the Graph Editor, or isolating the curve, can help you focus.

Using the Graph Editor for architectural and interior animations

Teams creating architectural animations can inspect changes in animated property values in the Graph Editor to assess how motion is distributed over time. For example, they can review the shape of the curve between existing keyframes for a scene transition or moving object. The source materials don’t describe a specific camera or rendering workflow, so it’s best to treat the Graph Editor as a tool for editing animation curves.

Repeatedly checking a short section of motion can make it easier to review timing. However, editing curves alone doesn’t determine a scene’s visual quality or render time. Teams may need to check compatibility with the Blender version they use and their project workflow separately; the sources provide no information about hardware requirements, licensing costs, or render performance.

Next steps

After editing the curves, preview the range containing the relevant keyframes and check that the changes play out as expected. Keyframe types can also be distinguished visually in the Dope Sheet: for example, Breakdown, Moving Hold, Extreme, and Jitter are types used to indicate different animation states. They don’t replace the curve, but make it easier to identify keyframes and animation events.

For further inspection, you can switch the Graph Editor’s time display to seconds, search for curves or filter them by type, and use “Show Extrapolation” to display the curve beyond the keyframe range. Choosing the view you need and working on one curve or a short time range at a time can make the editing process easier to follow.

Sources and license

This guide is adapted into Turkish from the Blender Manual pages “Keyframes: Introduction” and “Graph Editor: Introduction.” Both sources are licensed under CC BY-SA 4.0.