Read Aloud Video
Read Aloud Video uses explainer_video and creates page-by-page narrated visuals.
{ "type": "explainer_video", "prompt": "Explain MCP step by step in six pages", "language": "en", "aspect_ratio": "16:9", "scene_count": 6}
Use only catalog-supported page counts. The detail may include PPT or PDF artifacts in addition to the video. Do not send duration_seconds, and never describe Read Aloud Video as a Lite mode.
