B-Roll and Motion Graphics Composer

Insert contextual B-roll cutaways, animated data charts, lower thirds, and callout overlays on video timelines.

When to use

• Adding contextual B-roll cutaways timed to spoken topics on the primary video track.
• Generating animated data visualizations, stat callouts, and lower-third titles.
• Composing split-screen or picture-in-picture visual overlays.

Tool interface

Use the registered ai-video-editor (OpenClaw plugin) or autonomous_edit (MCP server) tool to run edits against a project timeline.

Tool parameters

• prompt (string, required): Description of the video edit to perform.
• project_id (string, optional): Project identifier returned by a prior call for multi-turn continuity.
• video_url (string, optional): Source video URL when starting a new project.
• captionTemplatePreset (string, optional): Built-in caption style slug (for example hormozi, viral-pop, karaoke, minimal-pro).
• captionTemplateMode (string, optional): One of add, recreate, style, translate, clear, remove_fillers.
• requirePlanApproval (boolean, optional): When true, pauses after planning and returns workingMemory for user confirmation.
• workingMemory (object, optional): State object from a paused plan-approval call.

Example tool input

{
  "prompt": "Add lower-third speaker titles at 0:03 and insert animated stat callout cards when metrics are mentioned.",
  "project_id": "project_example_01"
}

Capabilities

• Contextual B-roll placement aligned to transcript timestamps.
• Animated charts, stat counters, and lower-third title cards.
• Picture-in-picture and split-screen layout composition.
• Safe-zone aware positioning for landscape and vertical canvases.

Response fields

• success (boolean): True when the edit and verification passed.
• status (string): One of completed, waiting, awaiting_approval, or failed.
• projectId (string): Active project identifier for subsequent edits.
• projectRevision (number): Committed project revision number.
• videoUrl (string, optional): Rendered MP4 download URL when export completes.
• jobId (string, optional): Async render job identifier for status polling via check_job_status.