HyperFrames open-sources beat-sync workflow

By enabling AI agents to programmatically align visuals with audio tempo and rhythm, HeyGen is bringing "vibe-first" editing workflows to code-generated video.

• –**Rhythm-Driven Generation**: Allows AI agents to design the pacing, transitions, and animations based on the soundtrack first, mirroring how professional human creators plan their videos.
• –**Audio-Reactive Assets**: Simplifies the creation of dynamic, beat-responsive UI elements (like pulsing cards or glows) directly through HTML, CSS, and GSAP.
• –**Agent-First Editing**: Replaces manual timeline editing in tools like After Effects or Premiere with deterministic, LLM-generated layouts rendered via headless Chrome and FFmpeg.
• –**Consistent Visual Pacing**: Solves a major pain point in AI video generation where transitions feel disconnected from background audio, leading to more engaging short-form content.