Finish a short source video (<=60s, <=1080p, <=64MB, fetched by URL) into up to
Finish a short source video (<=60s, <=1080p, <=64MB, fetched by URL) into up to two platform-preset deliverables: caller-guided crop reframing between declared subject regions (never automatic detection), sidecar or burned-in subtitles with reflow, and EBU R128 loudness normalised to the preset target and measured, never claimed compliant. Includes a contact sheet. No rights clearance performed.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
612 msmedian answer time
$0.5listed price per call
$0.5price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://video.api.williamrobinson.dev/v1/video/finish
| Category | Image and media |
|---|---|
| Provider host | video.api.williamrobinson.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.5 | 612 ms |
Example input (from the provider)
{
"body": {
"brand": null,
"deliverables": [
{
"captions": "burned",
"language": "en",
"preset": "youtube-16x9",
"sidecar": true
},
{
"captions": "none",
"language": null,
"preset": "shorts-9x16",
"sidecar": false
}
],
"options": {
"captionFontSizeFraction": 0.045,
"captionMaxCharsPerLine": 42,
"captionMaxLines": 2,
"normalizeLoudness": true
},
"sourceUrl": "https://interactive-examples.mdn.mozilla.net/media/cc0-videos/friday.mp4",
"subjects": [
{
"box": {
"h": 0.6,
"w": 0.35,
"x": 0.325,
"y": 0.2
},
"fromS": 0,
"toS": 6
}
],
"subtitles": [
{
"content": "1\n00:00:00,000 --> 00:00:02,000\nFriday afternoon at the switchboard\n\n2\n00:00:02,000 --> 00:00:04,000\nThe operators keep the calls moving\n\n3\n00:00:04,000 --> 00:00:06,000\nA vintage office comedy short\n",
"format": "srt",
"language": "en"
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"brand": {
"additionalProperties": false,
"properties": {
"logoPng": {
"contentEncoding": "base64",
"description": "Base64 PNG (<= 262144 bytes decoded), or null.",
"maxLength": 349528,
"type": [
"string",
"null"
]
},
"position": {
"enum": [
"top-left",
"top-right",
"bottom-left",
"bottom-right"
],
"type": "string"
},
"widthFraction": {
"description": "Logo width as a fraction of output width.",
"maximum": 0.3,
"minimum": 0.05,
"type": "number"
}
},
"required": [
"logoPng",
"position",
"widthFraction"
],
"type": [
"object",
"null"
]
},
"deliverables": {
"items": {
"additionalProperties": false,
"properties": {
"captions": {
"enum": [
"burned",
"sidecar",
"none"
],
"type": "string"
},
"language": {
"description": "Must reference a subtitles[] language when captions is not \"none\"; must be null when captions is \"none\".",
"type": [
"string",
"null"
]
},
"preset": {
"enum": [
"youtube-16x9",
"shorts-9x16",
"reels-9x16",
"tiktok-9x16",
"square-1x1",
"feed-4x5"
],
"type": "string"
},
"sidecar": {
"description": "Also produce the sidecar .vtt when captions is \"burned\".",
"type": "boolean"
}
},
"required": [
"preset",
"language",
"captions",
"sidecar"
],
"type": "object"
},
"maxItems": 2,
"minItems": 1,
"type": "array"
},
"options": {
"additionalProperties": false,
"properties": {
"captionFontSizeFraction": {
"default": 0.045,
"maximum": 0.12,
"minimum": 0.02,
"type": "number"
},
"captionMaxCharsPerLine": {
"default": 42,
"maximum": 80,
"minimum": 10,
"type": "integer"
},
"captionMaxLines": {
"default": 2,
"maximum": 4,
"minimum": 1,
"type": "integer"
},
"normalizeLoudness": {
"default": true,
"type": "boolean"
}
},
"type": "object"
},
"sourceUrl": {
"description": "Public HTTPS URL of the source video (mp4/mov/webm/mkv, <= 67108864 bytes, <= 60s, <= 1080p). Fetched by the service before processing.",
"format": "uri",
"maxLength": 2048,
"type": "string"
},
"subjects": {
"description": "Regions of interest the reframer must keep in view; empty means centre-crop.",
"items": {
"additionalProperties": false,
"properties": {
"box": {
"additionalProperties": false,
"description": "Region of interest in source-pixel fractions.",
"properties": {
"h": {
"exclusiveMinimum": 0,
"maximum": 1,
"type": "number"
},
"w": {
"exclusiveMinimum": 0,
"maximum": 1,
"type": "number"
},
"x": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"y": {
"maximum": 1,
"minimum": 0,
"type": "number"
}
},
"required": [
"x",
"y",
"w",
"h"
],
"type": "object"
},
"fromS": {
"maximum": 60,
"minimum": 0,
"type": "number"
},
"toS": {
"description": "Must be greater than fromS.",
"maximum": 60,
"minimum": 0,
"type": "number"
}