GET

/v1/schemas/fal/video/heygen/heygen-video/image-to-video

Accept:

kind inputactivity videohash 982efc69…extracted Nov 10, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `cb99da56f808c99ab01d032c9dea198b89f2fc37dadb3ebd28a62ca741ce638a` { "fetchedAt": 1794286801, "extractorVersion": "2", "verifiedAt": null }

Request body

7 properties · 2 required · 0 $defs

property	type	description	constraints
prompt*	string		length ≥ 1 · length ≤ 32000
image_url*	string	Image to use as the first frame
resolution	enum		480p \| 768p \| 1080p \| 2k · default: "768p"
seed	integer		0 ≤ n ≤ 4294967295 · nullable
enable_safety_checker	boolean	Authorized callers may set false to request relaxed screening.	default: true
duration	integer		5 ≤ n ≤ 15 · default: 5
prompt_enhancement	enum		turbo \| quality \| ultraquality \| disabled · default: "turbo"

Validate a payload

before you spend tokens

shell

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