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Prevu

A storyboard and animatic authoring system for Unreal Engine, built in C++ and Slate.

Prevu organizes a production into a four-level hierarchy — Act, Scene, Shot, and Step — and backs every shot with a real ULevelSequence. From inside the editor you capture thumbnails, record scratch audio, take Level Snapshots per step, and assemble a nested master sequence without leaving Unreal. When you are ready to share or archive, Prevu bundles everything into a portable .prevu JSON package.

  • Four-level hierarchy: Act, Scene, Shot, Step
  • Every shot backed by a real ULevelSequence; nested master sequence assembled on demand
  • SceneCapture2D thumbnail capture per shot, with batch mode
  • Level Snapshot saved per step with selective restore via PrevuRestoreFilter
  • Scratch audio recording routed through Sequencer
  • Storyboard sheet export as PNG and as a self-contained HTML file
  • Portable .prevu JSON bundle for version control and sharing
  • Amber toolbar indicator signals when assembled sequences are stale

UE 5.7 · Editor only · Zachanot LLC

  • Overview — architecture, hierarchy model, sync model, export formats
  • Usage — step-by-step workflows for every major feature
  • API Reference — data model types, key functions, bridge and exporter APIs
  • Changelog — release history