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Source: Roblox Creator Hub · CC BY 4.0 · View source · Code samples: MIT Imported 2026-10-03. Formatting adapted for this site.

Keyframe

Inherits from: Instance → Object

A Keyframe holds the Poses applied to joints in a Model at a given point of time in an animation. Keyframes are interpolated between during animation playback.

Note, in most cases developers do not need to manipulate KeyframeSequences as the animation editor covers most animation functionality. However, in some cases a developer may wish to generate an animation from a Script or build their own plugin.

Structure

Keyframes are held within a KeyframeSequence and contain Pose objects. The poses are named in accordance with the BaseParts they correspond to and are structured in terms of joint hierarchy. This means each Pose is parented to the Pose corresponding to the part it is attached to.

Note, as Poses are named in accordance with the BaseParts they correspond to, animations require distinct part names to play correctly.

Interpolation

During animation playback the poses in different keyframes are interpolated between. This allows a smooth animation to be created without needing to define every frame. Note, the style of interpolation is determined in the Pose object. The Keyframe object merely holds the Poses at a defined point of time in the animation (Keyframe.Time).

Inherits from: Instance

Memory category: Animation

Code samples: View on Creator Hub (Keyframe-Generate-Poses).

Properties

Name	Type / Returns	Description
Keyframe.Time	float	The `Keyframe` time position (in seconds) in an animation. This determines the time at which the `Poses` inside the keyframe will be shown.

Inherited from Instance

Name	Type / Returns	Description
Instance.Archivable	boolean	Determines if an `Instance` and its descendants can be cloned using `Instance:Clone()`, and can be saved/published.
Instance.archivable	boolean
Instance.Capabilities	SecurityCapabilities	The set of capabilities allowed to be used for scripts inside this container.
Instance.IsInSandbox	boolean	Indicates whether the instance is inside a sandboxed container.
Instance.Name	string	A non-unique identifier of the `Instance`.
Instance.Parent	Instance	Determines the hierarchical parent of the `Instance`.
Instance.PredictionMode	PredictionMode	Reflects the client-side prediction mode applied to the instance under server-authoritative physics.
Instance.RobloxLocked	boolean	A deprecated property that used to protect `CoreGui` objects.
Instance.Sandboxed	boolean	When enabled, the instance can only access abilities in its `Capabilities` list.
Instance.UniqueId	UniqueId	A unique identifier for the instance.

Inherited from Object

Name	Type / Returns	Description
Object.ClassName	string	A read-only string representing the class this `Object` belongs to.
Object.className	string

Keyframe.Time

This property gives the Keyframe time position (in seconds) in an animation. This determines the time at which the Poses inside the keyframe will be shown.

Note the Keyframe with the highest time value in a KeyframeSequence is used to determine the length of the animation.

Field	Value
type	float
security	{"read":"None","write":"None"}
thread safety	ReadSafe
category	Data
serialization	{"can_load":true,"can_save":true}
capabilities	["Animation"]

Code samples: View on Creator Hub (Get-KeyframeSequence-Length).

Methods

Name	Type / Returns	Description
Keyframe:AddMarker	()	Adds a `KeyframeMarker` to the `Keyframe` by parenting it to the keyframe.
Keyframe:AddPose	()	Adds a `Pose` to the `Keyframe` by parenting it to the keyframe.
Keyframe:GetMarkers	List	Returns an array containing all `KeyframeMarkers` that have been added to the `Keyframe`.
Keyframe:GetPoses	List	Returns an array containing all `Poses` that have been added to a `Keyframe`.
Keyframe:RemoveMarker	()	Removes a `KeyframeMarker` from the `Keyframe` by settings its `Instance.Parent` to `nil`.
Keyframe:RemovePose	()	Removes a `Pose` from the `Keyframe` by setting its `Instance.Parent` to `nil`.

Inherited from Instance

Name	Type / Returns	Description
Instance:AddTag	()	Applies a tag to the instance.
Instance:children	Instances	Returns an array of the object's children.
Instance:ClearAllChildren	()	This method destroys all of an instance's children.
Instance:Clone	Instance	Create a copy of an instance and all its descendants, ignoring instances that are not `Archivable`.
Instance:clone	Instance
Instance:Destroy	()	Sets the `Instance.Parent` property to `nil`, locks the `Instance.Parent` property, disconnects all connections, and calls `Destroy()` on all children.
Instance:destroy	()
Instance:FindFirstAncestor	Instance?	Returns the first ancestor of the `Instance` whose `Instance.Name` is equal to the given name.
Instance:FindFirstAncestorOfClass	Instance?	Returns the first ancestor of the `Instance` whose `Object.ClassName` is equal to the given className.
Instance:FindFirstAncestorWhichIsA	Instance?	Returns the first ancestor of the `Instance` for whom `Object:IsA()` returns true for the given className.
Instance:FindFirstChild	Instance?	Returns the first child of the `Instance` found with the given name.
Instance:findFirstChild	Instance
Instance:FindFirstChildOfClass	Instance?	Returns the first child of the `Instance` whose `ClassName` is equal to the given class name.
Instance:FindFirstChildWhichIsA	Instance?	Returns the first child of the `Instance` for whom `Object:IsA()` returns true for the given className.
Instance:FindFirstDescendant	Instance?	Returns the first descendant found with the given `Instance.Name`.
Instance:GetActor	Actor?	Returns the `Actor` associated with the Instance, if any.
Instance:GetAttribute	Variant	Returns the value which has been assigned to the given attribute name.
Instance:GetAttributeChangedSignal	RBXScriptSignal	Returns an event that fires when the given attribute changes.
Instance:GetAttributes	Dictionary	Returns a dictionary of the instance's attributes.
Instance:GetChildren	Instances	Returns an array containing all of the instance's children.
Instance:getChildren	Instances
Instance:GetDebugId	string	Returns a coded string of the debug ID used internally by Roblox.
Instance:GetDescendants	Instances	Returns an array containing all of the descendants of the instance.
Instance:GetFullName	string	Returns a string describing the instance's ancestry.
Instance:GetStyled	Variant	Returns the styled or explicitly modified value of the specified property, or else the default property value if it hasn't been styled/modified.
Instance:GetStyledPropertyChangedSignal	RBXScriptSignal	Returns an event that fires when the given style property changes on the instance.
Instance:GetTags	Array	Gets an array of all tags applied to the instance.
Instance:HasTag	boolean	Check whether the instance has a given tag.
Instance:IsAncestorOf	boolean	Returns true if an `Instance` is an ancestor of the given descendant.
Instance:IsDescendantOf	boolean	Returns `true` if an `Instance` is a descendant of the given ancestor.
Instance:isDescendantOf	boolean
Instance:IsPropertyModified	boolean	Returns `true` if the value stored in the specified property is not equal to the code-instantiated default.
Instance:QueryDescendants	Instances	Returns an array containing all descendants of the instance that match the `selector` string.
Instance:Remove	()	Sets the object's `Parent` to `nil`, and does the same for all its descendants.
Instance:remove	()
Instance:RemoveTag	()	Removes a tag from the instance.
Instance:ResetPropertyToDefault	()	Resets a property to its default value.
Instance:SetAttribute	()	Sets the attribute with the given name to the given value.
Instance:WaitForChild	Instance	Returns the child of the `Instance` with the given name. If the child does not exist, it will yield the current thread until it does.

Inherited from Object

Name	Type / Returns	Description
Object:GetPropertyChangedSignal	RBXScriptSignal	Get an event that fires when a given property of the object changes.
Object:IsA	boolean	Returns true if an object's class matches or inherits from a given class.
Object:isA	boolean

Keyframe:AddMarker

This function adds a KeyframeMarker to the Keyframe by parenting it to the keyframe. It is functionally identical to setting the marker's Instance.Parent to the Keyframe.

Note, this function will not error when an instance other than a KeyframeMarker is given as the parameter and will parent it successfully.

More about Keyframes

Keyframe names do not need to be unique. For example, if an Animation has three keyframes named "Particles" the connected event returned by AnimationTrack:GetMarkerReachedSignal() will fire each time one of these keyframes is reached.

Keyframe names can be set in the Roblox Animation Editor when creating or editing an animation. They cannot however be set by a Script on an existing animation prior to playing it.

Name	Type	Default	Description
marker	Instance		The `KeyframeMarker` being parented to the `Keyframe`.

Keyframe:AddPose

This function adds a Pose to the Keyframe by parenting it to the keyframe. It is functionally identical to setting the pose's Instance.Parent to the keyframe.

Note, this function will not error when an instance other than a Pose is given as the pose parameter and will parent it successfully.

Parameters

Name	Type	Default	Description
pose	Instance		The `Pose` to be added.

Returns

Type	Description
()

Field	Value
security	None
thread safety	Unsafe
capabilities	["Animation"]

Code samples: View on Creator Hub (Keyframe-Generate-Poses, Keyframe-Add-Remove-Pose).

Keyframe:GetMarkers

This function returns an array containing all KeyframeMarkers that have been added to the Keyframe. Note, this function will only return instances of type KeyframeMarker.

More about Keyframes

Keyframe names can be set in the Roblox Animation Editor when creating or editing an animation. They cannot however be set by a Script on an existing animation prior to playing it.

Type	Description
List	An array containing all `KeyframeMarkers` that have been added to the `Keyframe`.

Keyframe:GetPoses

This function returns an array containing all Poses that have been added to a Keyframe.

Returns

Type	Description
List	An array of `Poses`.

Field	Value
security	None
thread safety	Unsafe
capabilities	["Animation"]

Code samples: View on Creator Hub (Keyframe-Reset-Poses).

Keyframe:RemoveMarker

This function removes a KeyframeMarker from the Keyframe by settings its Instance.Parent to nil.

The KeyframeMarker's Instance.Parent is set to nil but it is not destroyed. This means, provided the marker is referenced it can be re-parented later.

Note, this function will not error when an instance other than a KeyframeMarker is given as the parameter.

More about Keyframes

Keyframe names can be set in the Roblox Animation Editor when creating or editing an animation. They cannot however be set by a Script on an existing animation prior to playing it.

Name	Type	Default	Description
marker	Instance		The marker being removed from the `Keyframe`.

Keyframe:RemovePose

This function removes a Pose from the Keyframe by setting its Instance.Parent to nil without destroying it. This means the provided the pose is referenced and it can be re-parented later.

Note, this function will not error when an instance other than a Pose is given as the pose parameter.

Parameters

Name	Type	Default	Description
pose	Instance		The `Pose` to be removed.

Returns

Type	Description
()

Field	Value
security	None
thread safety	Unsafe
capabilities	["Animation"]

Code samples: View on Creator Hub (Keyframe-Add-Remove-Pose).

Events

Inherited from Instance

Name	Type / Returns	Description
Instance.AncestryChanged		Fires when the `Instance.Parent` property of this object or one of its ancestors is changed.
Instance.AttributeChanged		Fires whenever an attribute is changed on the `Instance`.
Instance.ChildAdded		Fires after an object is parented to this `Instance`.
Instance.childAdded
Instance.ChildRemoved		Fires after a child is removed from this `Instance`.
Instance.DescendantAdded		Fires after a descendant is added to the `Instance`.
Instance.DescendantRemoving		Fires immediately before a descendant of the `Instance` is removed.
Instance.Destroying		Fires immediately before (or is deferred until after) the instance is destroyed via `Instance:Destroy()`.
Instance.StyledPropertiesChanged		Fires whenever any style property is changed on the instance, including when a property is set to `nil`.

Inherited from Object

Name	Type / Returns	Description
Object.Changed		Fires immediately after a property of the object changes, with some limitations.