sequencerAbstraction

A lightweight Unreal Engine Editor-only module plugin that provides a minimal abstraction layer over Sequencer.

The goal is to simplify common Sequencer workflows (asset creation, track inspection, animation binding, etc.) without needing to interact directly with low-level MovieScene APIs.

API Overview

Category	Function	Description
Assets	CreateLevelSequenceAsset(const FString& PackagePath, const FString& AssetName, FSequenceOpenResult& Result)	Creates a new ULevelSequence asset at the specified content path.
Assets	LoadLevelSequenceAsset(const FString& AssetPath)	Loads an existing ULevelSequence from a content path.
Assets	SaveAsset(UObject* Asset)	Saves a loaded asset to disk.
Sequencer	GetCurrentOpenedLevelSequence()	Returns the currently opened sequence in Sequencer. Returns nullptr if none is open.
Sequencer	OpenLevelSequenceInSequencer(ULevelSequence* Sequence)	Opens the provided sequence in the Sequencer editor UI.
Sequencer	sequencerTimeChanged()	Returns true once when the opened sequence changes, then whenever the Sequencer playhead time differs from the previous call.
Sequencer	GetAllTracksInCurrentSequence()	Returns all master and object-bound tracks in the currently opened sequence as FSequenceTrackInfo (including their sections).
Sequencer	GetAllAnimSequencesInCurrentSequence()	Returns all animation sequences in the currently opened sequence as UAnimSequence*.
Sequencer	AddSkeletalMeshToOpenSequenceFromPath(UObject* WorldContextObject, const FString& SkeletalMeshAssetPath, const FName SpawnedActorLabel, FSequenceOpenResult& Result)	Spawns a skeletal mesh actor from an asset path and binds it to the currently opened sequence. Returns its binding FGuid.
Content	LoadSkeletalMesh(const FString& AssetPath)	Loads a USkeletalMesh from a content path.
Content	LoadAnimSequence(const FString& AssetPath)	Loads a UAnimSequence from a content path.
Content	LoadControlRigClass(const FString& AssetPath)	Loads a UControlRig generated class (TSubclassOf<UControlRig>) from a Control Rig asset path.
Tracks	RemoveTrackInSequenceByTrackPath(ULevelSequence* Sequence, const FString& TrackPath, FSequenceOpenResult& Result)	Removes a specific track using its serialized track path key.
Tracks	RemoveTracksInSequenceByBindingGuid(ULevelSequence* Sequence, const FGuid& BindingGuid, const FString& OptionalTrackClassName, FSequenceOpenResult& Result)	Removes all tracks for a binding, optionally filtered by track class name.
Sections	RemoveAnimSection(ULevelSequence* Sequence, UMovieSceneSkeletalAnimationSection* Section, FSequenceOpenResult& Result)	Removes a specific skeletal animation section from its track.
Sections	RemoveAnimSectionsByAnimSequence(ULevelSequence* Sequence, UAnimSequenceBase* Animation, int32 MaxToRemove, FSequenceOpenResult& Result, const FGuid& BindingGuid)	Removes animation sections that reference the specified animation asset, optionally limited by binding and count.
Sections	MoveAnimationSectionStartTo(ULevelSequence* Sequence, UMovieSceneSection* Section, int32 NewStartFrame, FSequenceOpenResult& Result)	Moves (translates) a section so its start frame matches the specified frame while preserving duration.
Sections	MoveAnimationSectionEndTo(ULevelSequence* Sequence, UMovieSceneSection* Section, int32 NewEndFrameInclusive, FSequenceOpenResult& Result)	Moves (translates) a section so its end frame matches the specified frame while preserving duration.
Timing	SetSequenceFrameRateFromAnimation(ULevelSequence* Sequence, UAnimSequence* Animation, bool bAlsoSetPlaybackRangeToAnim, FSequenceOpenResult& Result)	Sets the sequence display rate from the animation’s sampling rate. Optionally updates playback range to match animation length.
Timing	SetSequencePlaybackRange(ULevelSequence* Sequence, int32 StartFrame, int32 EndFrame)	Sets the playback range of the sequence in display frames.
Timing	GetSequencePlaybackRange(ULevelSequence* Sequence, int32& OutStartFrame, int32& OutEndFrame)	Retrieves the current playback range in display frames.
Timing (Legacy)	MoveAnimationSectionStartTo_Legacy(UMovieSceneSkeletalAnimationSection* Section, int32 NewStartFrame)	Legacy start-move function operating directly on a skeletal animation section (no sequence context).
Timing (Legacy)	MoveAnimationSectionEndTo_Legacy(UMovieSceneSkeletalAnimationSection* Section, int32 NewEndFrame)	Legacy end-move function operating directly on a skeletal animation section (no sequence context).
Animation	AddAnimSectionToBinding(ULevelSequence* Sequence, const FGuid& BindingGuid, UAnimSequence* Animation, int32 StartFrame, int32 RowIndex, bool bAllowOverlapSameRow, FSequenceOpenResult& Result)	Adds a skeletal animation section to the binding’s animation track. Supports automatic row selection and overlap handling.
ControlRig	AddRigToBinding(ULevelSequence* Sequence, UObject* WorldContextObject, const FGuid& BindingGuid, TSubclassOf<UControlRig> ControlRigClass, bool bLayered, FSequenceOpenResult& Result)	Adds a Control Rig track to an existing binding. Supports layered rigs.
Bake	BakeBindingToAnimSequence(ULevelSequence* Sequence, UObject* WorldContextObject, const FGuid& BindingGuid, const FString& TargetPackagePath, const FString& NewAssetName, FSequenceOpenResult& Result)	Bakes the specified binding to a new UAnimSequence asset at the target package path.

Data Structures

FSequenceTrackInfo

Used by GetAllTracksInCurrentSequence().

struct FSequenceTrackInfo
{
    FString DisplayName;
    FString TrackType;
    FString ObjectBindingPath;
    FGuid   BindingGuid;
    FString TrackPath;
    bool    bIsMasterTrack;
};

Example workflow in C++

ULevelSequence* Seq = USequencerAbstractionBPLibrary::GetCurrentOpenedLevelSequence();

if (!Seq)
{
    FSequenceOpenResult Result;
    Seq = USequencerAbstractionBPLibrary::CreateLevelSequenceAsset(
        "/Game/Cinematics",
        "NewSequence",
        Result
    );

    USequencerAbstractionBPLibrary::OpenLevelSequenceInSequencer(Seq);
}