soundtrack

Turns a song or a script into a video's soundtrack plus the timing data the picture syncs to: beats, downbeats, sections and word timings as JSON, narration and music generated with ElevenLabs (asking before spending credits), sound effects, and the video's mix of voice, music and effects. Use it whenever a video or animation needs its music analyzed, a voiceover made, lyrics or words timed, background music or effects created, or its audio mixed, even if the user only says "make it sync" or "add a voiceover". Not for podcasts, voice cloning, noise removal, mastering a song for streaming, or app code that calls a speech API.