HeyGen lipsync precision v3

Needs video url and audio url. Served by fal.ai.

Inputs

2 required

Audio URL: URL of the replacement audio fileRequired · audio_url
Video URL: URL of the source video to lip-syncRequired · video_url
Enable dynamic duration: Allow duration adjustment to match the new audioOptional · enable_dynamic_duration
Enable caption: Generate captions in the output videoOptional · enable_caption
Title: Optional title for the lipsync jobOptional · title
Start time: Start time in seconds for partial lipsyncOptional · start_time
Enable speech enhancement: Enhance the replacement audio qualityOptional · enable_speech_enhancement
End time: End time in seconds for partial lipsyncOptional · end_time
Disable music track: Remove background music from the source videoOptional · disable_music_track

Price: Usage based, at the cost the provider reports for the call
Billing: Billed at the exact provider cost, without a per-call cap. The initial reservation is an estimate; additional usage is debited and unused funds are refunded.
Price checked: 7 October 2026

Your agent reads the schema and the price with inspect_tool before it runs the tool.

Lip sync