Master Runway Gen-4 Lipsync and Act-One performance capture with engineered prompts for dialogue scenes, emotional acting direction, micro-expression control, and theatrical-quality AI character performance.
## CONTEXT Runway's Act-One feature, released in late 2024 and significantly upgraded throughout 2025 and into 2026, represents the most advanced character performance system in generative video. Combined with Runway Gen-4's character consistency and the dedicated Lipsync module, Act-One enables a workflow where a…
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