SpriteStage enables long animations by building scenes step-by-step
SpriteStage: Long Horizon Animation Generation via Progressive Scene Programming and Replay
Computer Vision and Pattern RecognitionArtificial Intelligence
Summary
Making long animations is hard because the story and actions have to line up well across many scenes. The authors present SpriteStage, a new way to create animations one scene at a time, checking how each part looks before moving on. This method lets creators fix problems early and build stories that keep flowing smoothly. They tested it by making three animated videos that last about 10 to 14 minutes each.
What this means in practice
- •For animation studios: Create long, coherent animated videos efficiently by refining each scene interactively with runtime and visual feedback before final production.$Commercial implications: Enables production studios to develop extended animated narratives with automated scene iteration and asset integration, improving workflow and quality.
- •For game development teams: Build complex in-game cinematics by programming scenes progressively and replaying accepted performances to ensure story and action consistency across sequences.
Authors
Zhaoqi Wang, Zijian Zhang, Jiamou Liu
Abstract
Video generation models synthesize visual sequences from text and image inputs. Extending video generation to long animations requires actions, dialogue, camera coverage, and narrative developments to remain coordinated across scenes. Executable scene programs make these decisions available for inspection. Constructing an entire story before observing its execution can leave later scenes dependent on unrealized events. We present SpriteStage, a progressive scene programming framework that builds animation through iterative enactment and engine reorchestration. Iterative enactment generates each scene from an accepted world checkpoint and narrative snapshot, executes it on a shared spatial stage, and uses runtime and visual feedback to revise the relevant actions or story beats. The accepted outcome becomes the starting state for the next scene. Engine reorchestration maps the resulting draft to production assets and engine capabilities while retaining its events, geometry, and timing. Inspection of the assembled sequence and frozen replay carry the accepted performance into the final video. Three complete animations, ranging from approximately 9.9 to 14.3 minutes, demonstrate the framework's effectiveness in producing extended narratives through scene programming and engine execution.