GET

/v1/schemas/fal/video/fal-ai%2Fkling-video%2Fv2.6%2Fpro%2Fimage-to-video

Accept:

kind inputactivity videohash 4e42c5f9…extracted Jul 6, 2026version currentsource upstream spec ↗

Request body

7 properties · 2 required · 0 $defs

property	type	description	constraints
start_image_url*	string	URL of the image to be used for the video
prompt*	string		length ≤ 2500
generate_audio	boolean	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.	default: true
end_image_url	string	URL of the image to be used for the end of the video	nullable
duration	enum	The duration of the generated video in seconds	5 \| 10 · default: "5"
voice_ids	string[]	Optional Voice IDs for video generation. Reference voices in your prompt with <<<voice_1>>> and <<<voice_2>>> (maximum 2 voices per task). Get voice IDs from the kling video create-voice endpoint: https://fal.ai/models/fal-ai/kling-video/create-voice	nullable
negative_prompt	string		length ≤ 2500 · default: "blur, distort, and low quality"

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/kling-video/v2.6/pro/image-to-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}