Takes a video of up to 3 minutes and returns an MP4 with the subtitles rendered
Takes a video of up to 3 minutes and returns an MP4 with the subtitles rendered into the picture. Subtitles come either from you as SRT or WebVTT text, or, with transcribe=true, from the soundtrack (Deepgram, training opt-out) at 0.03 instead of 0.01 USDC per minute — the price is fixed before payment.
Answeringour last check, 2026-10-31
1 of 1checks answered this week
1368 msmedian answer time
$0.03listed price per call
$0.03price 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://medien.halowerk.com/v1/burn-subtitles
| Category | Image and media |
|---|---|
| Provider host | medien.halowerk.com |
| 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 |
|---|---|---|---|---|
| 2026-10-31 | valid payment request | 402 | $0.03 | 1368 ms |
Example input (from the provider)
{
"body": {
"duration_minutes": 1,
"font_size": 24,
"language": "en",
"source": {
"url": "https://medien.halowerk.com/beispiel/vortrag.mp4"
},
"transcribe": true
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"duration_minutes": {
"description": "Length of the video in started minutes \u2014 this is what you are billed for.",
"maximum": 3,
"minimum": 1,
"type": "integer"
},
"font_size": {
"default": 22,
"maximum": 60,
"minimum": 10,
"type": "integer"
},
"language": {
"description": "Spoken language for transcribe. Omit to detect.",
"maxLength": 12,
"type": "string"
},
"max_width": {
"default": 1280,
"maximum": 1920,
"minimum": 320,
"type": "integer"
},
"position": {
"default": "bottom",
"enum": [
"bottom",
"middle",
"top"
],
"type": "string"
},
"source": {
"additionalProperties": false,
"description": "The recording. Either url or content_base64.",
"properties": {
"content_base64": {
"description": "The file inline, base64. Larger files by url.",
"maxLength": 12000000,
"type": "string"
},
"filename": {
"maxLength": 260,
"type": "string"
},
"url": {
"description": "Public http(s) URL of the file.",
"maxLength": 2048,
"type": "string"
}
},
"type": "object"
},
"srt": {
"description": "Subtitles as SRT text.",
"maxLength": 300000,
"type": "string"
},
"transcribe": {
"default": false,
"description": "Create subtitles from the soundtrack instead (0.03 USDC per minute).",
"type": "boolean"
},
"vtt": {
"description": "Subtitles as WebVTT text.",
"maxLength": 300000,
"type": "string"
}
},
"required": [
"source",
"duration_minutes"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}