Subtitle Sync: Align a Transcript to Audio Timestamps

The final charge is based on confirmed usage. Unused reserved credits return to your available balance.

ElevenLabs

Subtitle Sync: Align a Transcript to Audio Timestamps

Paste the transcript as plain text plus one public HTTPS audio link (max 20MB) and get word-level timestamps back to resync or synchronize subtitles. No transcription, no SRT/VTT file, no local upload. Billed for the audio actually aligned, max US$100 a run; one wallet for all tools.

You receive

One plain transcript string plus one audio URL returns word-level timestamps for exactly those words. Billing follows the audio length actually aligned, a single run is capped at US$100, and the same prepaid balance runs every other Toolmu tool.

Start with your task

Sync subtitles by matching [the transcript you already have] to [a public link to the matching audio file, under 20 MB]. It adds a time to each word; it does not transcribe audio.

Inputs & outputs

Inspect the current inputs, availability, and maximum charge before starting.

Input schema

Input schema
Field / Path	Type	Requirement	Meaning
body`body`	`object`	Required	Align a transcript to its audio for word-level timestamps Required fields `audio_url, text`
text`body.text`	`string`	Required	The transcript to align — a PLAIN string (no JSON wrapping, no diarization markup). Minimum length `1` Maximum length `675000`
audio_url`body.audio_url`	`string`	Required	HTTPS URL of the audio file (public or presigned link; max 20MB). Monid fetches it server-side and relays it to ElevenLabs. Format `uri`
expected_duration_minutes`body.expected_duration_minutes`	`number`	Optional	Monid-only billing hint (NOT sent upstream): expected audio length in minutes, used to size the admission hold. Settlement bills the actual aligned duration. Omitted → a 60-minute hold. Maximum `600`

View raw JSON

{
  "type": "object",
  "required": [
    "body"
  ],
  "properties": {
    "body": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "audio_url",
        "text"
      ],
      "~standard": {
        "vendor": "zod",
        "version": 1,
        "jsonSchema": {}
      },
      "properties": {
        "text": {
          "type": "string",
          "maxLength": 675000,
          "minLength": 1,
          "description": "The transcript to align — a PLAIN string (no JSON wrapping, no diarization markup)."
        },
        "audio_url": {
          "type": "string",
          "format": "uri",
          "description": "HTTPS URL of the audio file (public or presigned link; max 20MB). Monid fetches it server-side and relays it to ElevenLabs."
        },
        "expected_duration_minutes": {
          "type": "number",
          "maximum": 600,
          "description": "Monid-only billing hint (NOT sent upstream): expected audio length in minutes, used to size the admission hold. Settlement bills the actual aligned duration. Omitted → a 60-minute hold.",
          "exclusiveMinimum": 0
        }
      },
      "description": "Align a transcript to its audio for word-level timestamps",
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}

Result schema

Output fields have not been documented yet.

Add timing to subtitles
Use [your existing transcript] with [a public audio-file link under 20 MB] to line up each word with the audio.
Get connected
Resync a transcript
Match [the transcript text] to [the matching audio file link that anyone can open].
Sync subtitles by matching [the transcript you already have] to [a public link to the matching audio file, under 20 MB]. It adds a time to each word; it does not transcribe audio.
Prepare word-level timing
Paste [the words you want matched] and [the public link to the matching audio file]. This tool does not transcribe audio.

You receive

Start with your task

Inputs & outputs

Input schema

Result schema

Add timing to subtitles

Resync a transcript

Prepare word-level timing