---
title: "Update a Transcription Vocabulary"
method: PUT
path: "/video/v1/transcription-vocabularies/{TRANSCRIPTION_VOCABULARY_ID}"
tags: ["Transcription Vocabularies"]
---

# Update a Transcription Vocabulary

`PUT /video/v1/transcription-vocabularies/{TRANSCRIPTION_VOCABULARY_ID}`

Updates the details of a previously-created Transcription Vocabulary. Updates to Transcription Vocabularies are allowed while associated live streams are active. However, updates will not be applied to those streams while they are active.

## Path parameters

- `TRANSCRIPTION_VOCABULARY_ID` string, required

## Request body

- UpdateTranscriptionVocabularyRequest
  - `name` string — The user-supplied name of the Transcription Vocabulary.
  - `phrases` TranscriptionVocabularyPhrase[], required — Phrases, individual words, or proper names to include in the Transcription Vocabulary. When the Transcription Vocabulary is attached to a live stream's `generated_subtitles`, the probability of successful speech recognition for these words or phrases is boosted.
  - `passthrough` string — Arbitrary user-supplied metadata set for the Transcription Vocabulary. Max 255 characters.

## Response `200`

OK

- TranscriptionVocabularyResponse
  - `data` TranscriptionVocabulary, required
    - `id` string, required — Unique identifier for the Transcription Vocabulary
    - `name` string — The user-supplied name of the Transcription Vocabulary.
    - `phrases` TranscriptionVocabularyPhrase[] — Phrases, individual words, or proper names to include in the Transcription Vocabulary. When the Transcription Vocabulary is attached to a live stream's `generated_subtitles` configuration, the probability of successful speech recognition for these words or phrases is boosted.
    - `passthrough` string — Arbitrary user-supplied metadata set for the Transcription Vocabulary. Max 255 characters.
    - `created_at` string, int64, required — Time the Transcription Vocabulary was created, defined as a Unix timestamp (seconds since epoch).
    - `updated_at` string, int64, required — Time the Transcription Vocabulary was updated, defined as a Unix timestamp (seconds since epoch).

---

[API](https://skmtc.net/muxinc/apis/mux-api.md) · [All operations](https://skmtc.net/muxinc/apis/mux-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/muxinc/mux-api/revisions/34a65dce0f31/schema)