Veo 3.1 Fast Video Extend: Realistic Video-to-Video Scene Continuation | RunComfy

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/google-deepmind/veo-3-1/fast/extend-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The warrior raises his weapon high, and with a thunderous roar, the troops surge forward. Spears lower in unison as the formation begins to move, footsteps pounding the ground. The camera pulls back into a wide shot, revealing waves of warriors charging across the battlefield. Dust clouds thicken, sunlight cuts through the haze, and the distant enemy lines come into view, heightening the tension just before the clash.",
    "video_url": "https://playgrounds-storage-public.runcomfy.net/tools/7282/media-files/input-1-1.mp4"
  }'

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

{
  "type": "object",
  "title": "modelApiDoc_navInputSchema",
  "required": [
    "prompt",
    "video_url"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "",
      "type": "string",
      "default": "The warrior raises his weapon high, and with a thunderous roar, the troops surge forward. Spears lower in unison as the formation begins to move, footsteps pounding the ground. The camera pulls back into a wide shot, revealing waves of warriors charging across the battlefield. Dust clouds thicken, sunlight cuts through the haze, and the distant enemy lines come into view, heightening the tension just before the clash."
    },
    "aspect_ratio": {
      "title": "Aspect Ratio (W:H)",
      "description": "The aspect ratio of the generated video.",
      "type": "string",
      "enum": [
        "auto",
        "16:9",
        "9:16"
      ],
      "default": "auto"
    },
    "duration": {
      "title": "Duration",
      "description": "The duration of the generated video.",
      "type": "string",
      "enum": [
        "7s"
      ],
      "default": "7s"
    },
    "resolution": {
      "title": "Resolution",
      "description": "The resolution of the generated video.",
      "type": "string",
      "enum": [
        "720p"
      ],
      "default": "720p"
    },
    "generate_audio": {
      "title": "Generate Audio",
      "description": "Whether to generate audio for the video.",
      "type": "boolean",
      "default": true
    },
    "video_url": {
      "title": "Video URL",
      "description": "URL of the video to extend. The video should be 720p or 1080p resolution in 16:9 or 9:16 aspect ratio.",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7282/media-files/input-1-1.mp4"
    }
  }
}