Generates subtitles from video with Whisper v3, word-wrapped and ready for VLC /
Generates subtitles from video with Whisper v3, word-wrapped and ready for VLC / Premiere / FFmpeg. Auto-detects language and can translate to English. Use it as a video subtitle generator, auto-subtitle and closed captions tool, SRT generator, VTT generator, video CC endpoint, or accessibility captions source.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
23 msmedian answer time
$0.02listed price per call
$0.02price 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://x402.agentutility.ai/video-to-subtitles
| Category | Image and media |
|---|---|
| Provider host | x402.agentutility.ai |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| 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 | $0.02 | 23 ms |
Example input (from the provider)
{
"body": {
"format": "srt",
"media_url": "https://samplelib.com/mp4/sample-5s.mp4"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"format": {
"description": "Subtitle format: 'srt' (default) or 'vtt'.",
"enum": [
"srt",
"vtt"
],
"type": "string"
},
"language": {
"description": "Source language hint (ISO code). Optional; auto-detected if omitted.",
"type": "string"
},
"max_chars_per_line": {
"description": "Max characters per subtitle line, 16-120. Default 42.",
"type": "number"
},
"media_url": {
"description": "URL of the video or audio file to generate subtitles from. Max 60 minutes.",
"type": "string"
},
"task": {
"description": "'transcribe' (default) keeps original language, or 'translate' to English.",
"enum": [
"transcribe",
"translate"
],
"type": "string"
}
},
"required": [
"media_url"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"format": {
"type": "string"
},
"subtitles": {
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}