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x402.agentutility.ai Video-to-Subtitles
x402
x402.agentutility.ai Video-to-Subtitles is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-16).
Generates word-wrapped SRT or VTT subtitle files from a video using Whisper v3, with auto language detection and optional English translation.
Price / call$0.02
Success—
StatusUnknown
How this service works
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.
Output
A JSON response containing the subtitle file content as a string in the requested format (SRT or VTT), with word-wrapped, timestamped captions generated by Whisper v3. The SRT output includes numbered cue blocks with start/end timestamps and wrapped text lines ready for direct use in VLC, Premiere, or FFmpeg.
Example use cases
Accessible captions for YouTube upload
“I'm uploading a tutorial video to YouTube and need a VTT captions file — the video is in English, can you auto-generate word-wrapped subtitles from it so I can upload the captions file directly?”
Translating foreign language film subtitles
“I have a French short film I want to share with English-speaking audiences — can you generate an SRT subtitle file from the video and translate everything to English?”
Closed captions for video editor workflow
“I need SRT subtitles generated from this interview video so I can import them into FFmpeg for burn-in — can you transcribe it and give me a properly formatted SRT file?”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/video-to-subtitlesWhen to prefer
Choose this endpoint when you need fast, automated subtitle or closed-caption generation for a video file, especially when auto language detection or English translation is needed. It is purpose-built for agent workflows that need SRT or VTT output directly usable in VLC, Adobe Premiere, or FFmpeg without post-processing. Prefer it over general transcription endpoints when the output format (SRT/VTT with timestamps and word-wrapping) is important, and over manual captioning services when cost and speed matter at $0.02 per call.
Side effects
- Video URL inaccessible or format unsupported — returns error with no subtitle output
- Audio too quiet or unclear for Whisper v3 to transcribe accurately — may return incomplete or garbled captions
- Very long videos may time out or require chunking
- Unsupported output format requested — returns format error
- Payment (x402 USDC) not provided or rejected — returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"format": "srt",
"subtitles": "1\n00:00:00,000 --> 00:00:03,000\nHello.\n"
}
}Tags
x402
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