GET

/v1/schemas/fal/video/blackforestlabs/flux-3/first-last-frame-to-video?kind=output

Accept:

kind outputactivity videohash e09826b0…extracted Aug 6, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `86aafcb16f52495263654f4277cd0bc6783ff5ad2e64b14f9c09961f549f48af` { "fetchedAt": 1785992534, "extractorVersion": "1", "verifiedAt": null }

Response body

2 properties · 2 required · 1 $defs

property	type	description	constraints
video*	File	The generated video.
seed*	integer	The seed used for the generation.

Types

1 $defs

Fileobject

file_name	string	The name of the file. It will be auto-generated if not provided.	nullable
content_type	string	The mime type of the file.	nullable
file_size	integer	The size of the file in bytes.	nullable
url*	string	The URL where the file can be downloaded from.

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"blackforestlabs/flux-3/first-last-frame-to-video","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}