Editing

Transform

Reference

Mode

Edit Mode

Menu

Key ‣ Transform

An F-curve can be edited by transforming the locations of the keyframes.

Move, Rotate, Scale

Like other elements in Blender, keyframes can be moved, rotated, or scaled as described in Basic Transformations.

Extend

Moves keyframes relative to the Playhead. If the mouse is to the left of the Playhead, this operator only affects the selected keyframes that are to the left of the Playhead. On the contrary, if the mouse is to the right of the Playhead, this operator only affects the selected keyframes that are to the right of the Playhead.

Tip

For precise control of the keyframe position and value, you can set values in the Active Keyframe of the Sidebar region.

Snap

Reference

Menu

Key ‣ Snap

Hotkey

Shift-S

Keyframes can be snapped to different properties by using the Snap Keys tool.

Selection to Current Frame

Snap the selected keyframes to the Playhead.

Selection to Cursor Value

Snap the selected keyframes to the 2D Cursor.

Selection to Nearest Frame

Snap the selected keyframes to their nearest frame individually.

Selection to Nearest Second

Snap the selected keyframes to their nearest second individually, based on the FPS of the scene.

Selection to Nearest Marker

Snap the selected keyframes to their nearest marker individually.

Flatten Handles

Flatten the Bézier handles for the selected keyframes.

Flatten Handles snapping example.

Before Flatten Handles.

After Flatten Handles.

Cursor to Selected Ctrl-G

Places the cursor at the midpoint between selected keyframes.

Cursor Value to Selection

Places the cursor value on the average value of selected keyframes.

Mirror

Reference

Menu

Key ‣ Mirror

Hotkey

Ctrl-M

Selected keyframes can be mirrored over different properties using the Mirror Keys tool.

By Times over Current Frame

Mirror horizontally over the playhead.

By Values over Cursor Value

Mirror vertically over the 2D cursor.

By Times over Time 0

Mirror horizontally over frame 0.

By Values over Value 0

Mirror vertically over value 0.

By Times over First Selected Marker

Mirror horizontally over the first selected marker.

Insert Keyframes

Reference

Menu

Key ‣ Insert Keyframes

Hotkey

Ctrl-RMB, Shift-Ctrl-RMB

Inserts a keyframe to the active F-curve at the mouse position. The newly added keyframes will be selected, making it easier to quickly tweak the newly added keyframes. All previously selected keyframes are kept selected by using Shift-Ctrl-RMB.

Add F-Curve Modifier

Reference

Menu

Key ‣ Add F-Curve Modifier

Hotkey

Shift-Ctrl-M

Opens a pop-up allowing you to add modifiers to the active F-curve. Settings for the modifier can be found in the Sidebar ‣ Modifiers tab.

Bake Sound to F-Curves

Reference

Menu

Key ‣ Bake Sound to F-Curves

The Bake Sound to F-Curves operator takes a sound file and uses its sound wave to create the animation data.

Lowest Frequency

Cutoff frequency of a high-pass filter that is applied to the audio data.

Highest Frequency

Cutoff frequency of a low-pass filter that is applied to the audio data.

Attack Time

Value for the hull curve calculation that tells how fast the hull curve can rise. The lower the value the steeper it can rise.

Release Time

Value for the hull curve calculation that tells how fast the hull curve can fall. The lower the value the steeper it can fall.

Threshold

Minimum amplitude value needed to influence the hull curve.

Accumulate

Only the positive differences of the hull curve amplitudes are summarized to produce the output.

Additive

The amplitudes of the hull curve are summarized. If Accumulate is enabled, both positive and negative differences are accumulated.

Square

Gives the output as a square curve. Negative values always result in -1, and positive ones in 1.

Square Threshold

All values lower than this threshold result in 0.

Jump to Keyframes

Reference

Menu

Key ‣ Jump to keyframes

Hotkey

Ctrl-G

Places the 2D cursor at the center of the selected keyframes.

Copy/Paste

Reference

Menu

Key ‣ Copy Keyframes, Key ‣ Paste Keyframes

Hotkey

Ctrl-C, Ctrl-V

Use Ctrl-C to copy selected keyframes and Ctrl-V to paste the previously copied keyframes. During the paste action, the Adjust Last Operation panel provides some options in how the paste is applied.

Offset

No Offset

Pastes the keyframes in the location they were copied from.

Frame Relative

Pastes the keyframe relative to the Playhead position based on the locations of the keyframes relative to the Playhead when they were copied.

Frame Start

Pastes the keyframes with the first keyframe of the copied set placed at the Playhead.

Frame End

Pastes the keyframes with the last keyframe of the copied set placed at the Playhead.

Type

Mix

Integrates the pasted keyframes in with existing keyframes only overwriting keyframes that share a frame.

Overwrite All

Removes all previous keyframes and replaces them with the pasted keyframes.

Overwrite Range

TODO

Overwrite Entire Range

TODO

Flipped

TODO

Duplicate

Reference

Menu

Key ‣ Duplicate

Hotkey

Shift-D

Duplicates the selected keyframes. You can reposition them by moving the mouse.

Delete Keyframes

Reference

Menu

Key ‣ Delete Keyframes

Hotkey

X, Delete

Pressing X or Delete opens a pop-up menu from where you can delete the selected keyframes.

Handle Type

Reference

Menu

Key ‣ Handle Type

Hotkey

V

Sets the handle type of the selected keyframes.

Interpolation Mode

Reference

Menu

Key ‣ Interpolation Mode

Hotkey

T

Sets the interpolation mode between the selected keyframes.

Easing Mode

Reference

Menu

Key ‣ Easing Mode

Hotkey

Ctrl-E

Sets the easing mode of the selected keyframes.

Decimate

Reference

Menu

Key ‣ Decimate (Ratio)

Menu

Key ‣ Decimate (Allowed Change)

The Decimate tool simplifies an F-curve by removing keyframes that influence the curve shape the least.

Mode

Controls which method is used pick the number of keyframes to use.

Ratio

Deletes a defined percentage of keyframes, the amount of keyframes to delete is define by the Remove property.

Error Margin

Deletes keyframes which only allowing the F-curve to change by a defined amount. The amount of change is controlled by the Max Error Margin which controls how much the new decimated curve is allowed to deviate from the original.

Clean Keyframes

Reference

Menu

Key ‣ Clean Keyframes

Hotkey

X

Clean Keyframes resets the keyframe tangents on selected keyframes to their auto-clamped shape, if they have been modified.

F-Curve before cleaning.

F-Curve after cleaning.

Clean Channels

Reference

Menu

Key ‣ Clean Channels

Hotkey

X

Acts like the Clean Keyframes tool but will also delete the channel itself if it is only left with a single keyframe containing the default property value and it’s not being used by any generative F-curve modifiers or drivers.

Note

The modified curve left after the Clean tool is run is not the same as the original, so this tool is better used before doing custom editing of F-curves and after initial keyframe insertion, to get rid of any unwanted keyframes inserted while doing mass keyframe insertion (by selecting all bones and pressing I for instance).

Smooth Keys

Reference

Menu

Key ‣ Smooth Keys

Hotkey

Alt-O

There is also an option to smooth the selected curves, but beware: its algorithm seems to be to divide by two the distance between each keyframe and the average linear value of the curve, without any setting, which gives quite a strong smoothing! Note that the first and last keys seem to be never modified by this tool.

F-Curve before smoothing.

F-Curve after smoothing.

Sample Keyframes

Reference

Menu

Key ‣ Sample Keyframes

Hotkey

Shift-Alt-O

Sampling a set of keyframes replaces interpolated values with a new keyframe for each frame.

F-Curve before sampling.

F-Curve after sampling.

Bake Curve

Reference

Menu

Key ‣ Bake Curve

Hotkey

Alt-C

Baking a curve replaces it with a set of sampled points, and removes the ability to edit the curve.

Discontinuity (Euler) Filter

Todo.