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fal-ai/kling-video/v3/pro/image-to-video

Name: fal-ai/kling-video/v3/pro/image-to-video
Brand: fal
Availability: InStock

fal-ai/kling-video/v3/pro/image-to-video is an image to video tool from fal that runs in the background and returns video. Pay as you go from $0.1456 per second, with one API key.

Try itfrom $0.1456 / second

Pricing

generate_audio: false $0.1456, true (default) $0.2184 per second. Billed on duration, default 5. The final charge comes from usage.

Limits

Runs: In the background
Returns: video
Longest queue wait: 3600s
Run deadline: 3600s
Largest inline input: 1024 KB
Largest input file: 500 MB
Largest output: 4768 MB
Outputs per run: 16

Input

Field	Kind	Default	Description
`prompt`	text	—	Text prompt for video generation. Either prompt or multi_prompt must be provided, but not both.
`multi_prompt`	JSON	—	List of prompts for multi-shot video generation. If provided, divides the video into multiple shots.
`start_image_url` required	URL or file	—	URL of the image to be used for the video
`duration`	one of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15	5	The duration of the generated video in seconds
`generate_audio`	true or false	true	Whether to generate native audio for the video. Supports Chinese and English voice output. Other languages are automatically translated to English. For English speech, use lowercase letters; for acronyms or proper nouns, use uppercase.
`end_image_url`	URL or file	—	URL of the image to be used for the end of the video
`elements`	JSON	—	Elements (characters/objects) to include in the video. Each example can either be an image set (frontal + reference images) or a video. Reference in prompt as @Element1, @Element2, etc.
`shot_type`	one of customize, intelligent	customize	The type of multi-shot video generation. 'intelligent' lets the model automatically determine shot structure.
`negative_prompt`	text	blur, distort, and low quality
`cfg_scale`	number 0 to 1	0.5	The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt.

Same request in code

curl https://api.spiral.ai/v1/runs \
  -H "Authorization: Bearer $SPIRAL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "provider": "fal",
    "model": "fal-ai/kling-video/v3/pro/image-to-video",
    "input": {
      "start_image_url": "https://storage.googleapis.com/falserverless/example_inputs/kling-v3/pro-i2v/start_image.png"
    }
  }'