--- title: "Get a 'translate-captions' job" method: GET path: "/robots/v1/jobs/translate-captions/{JOB_ID}" tags: ["Translate Captions"] --- # Get a 'translate-captions' job `GET /robots/v1/jobs/translate-captions/{JOB_ID}` ## Request - Base URL: `https://api.mux.com` - URL: `https://api.mux.com/robots/v1/jobs/translate-captions/{JOB_ID}` - Auth: one of: - HTTP basic - HTTP bearer Retrieves the current status and results of a 'translate-captions' job. Jobs are automatically deleted after 30 days. ## Path parameters - `JOB_ID` string, required: Robots job ID returned by job creation or listing (rjob_...). ## Response `200` Current job status and outputs - TranslateCaptionsJobResponse - `data` TranslateCaptionsJob, required - `id` string, required: Unique job identifier. - `passthrough` string: Arbitrary string supplied at creation, returned as-is. - `units_consumed` integer, required: Number of Mux AI units consumed by this job. - `directive` JobDirectiveContext: The directive run that dispatched this job. Absent for jobs created via direct API POST. - `id` string, required: ID of the directive that dispatched this job. - `run_id` string, required: ID of the specific directive run that dispatched this job. - `created_at` integer, required: Unix timestamp (seconds) when the job was created. - `updated_at` integer, required: Unix timestamp (seconds) of the job's last state transition (e.g. when it started processing or reached a terminal state). - `workflow` 'translate-captions', required - `parameters` TranslateCaptionsJobParameters, required - `asset_id` string, required: The Mux asset ID of the video whose captions will be translated. - `track_id` string, required: Mux text track ID of the source captions. Must identify a ready subtitle track, or the single ready legacy text transcript without subtitle metadata on an audio-only asset. A missing or unready source is rejected. - `track_name` string: Name for the translated Mux text track. Defaults to "{Language} (Auto-translated)", e.g. "Spanish (Auto-translated)". Mux requires text track names to be unique on an asset, and an existing track with this name is handled according to `replace_existing_tracks`. - `upload_to_mux` boolean: Whether to upload the translated VTT and attach it as a text track on the Mux asset. Defaults to true. - `never_translate` string[]: Best-effort list of terms (brand names, proper nouns) to preserve verbatim in the translated captions. Does not guarantee exact output. Terms must not contain '<' or '>', invisible characters, or characters altered by Unicode normalization. - `replace_existing_tracks` 'fail' | 'replace_all' | 'replace_generated': What to do when the asset already has a text track in the same language as, or with the same name as, the translated track. Defaults to `fail`, which rejects the request before any translation is billed. `replace_all` deletes every such track first. `replace_generated` deletes only Mux Video auto-generated tracks and rejects if an uploaded track is in the way. Any value other than `fail` requires `upload_to_mux` to be true. Existing tracks are matched by language ignoring region subtags, and by name ignoring case, in any status. - `output_language_code` string, required: BCP 47 language code for the translated output (e.g. "es", "ja"). Unless replace_existing_tracks allows replacement, the asset must not already have a text track for this language. - `status` 'pending' | 'processing' | 'completed' | 'errored' | 'cancelled', required: Current job status. - `errors` JobError[]: Error details. Present when status is 'errored'. - `type` string, required: Stable public error category identifier. - `message` string, required: Human-readable public error message. - `retryable` boolean: Whether retrying this job may resolve the error. - `resources` Resources: Related Mux resources linked to this job. - `assets` SlimlineAsset[], required: Mux assets associated with this job. - `id` string, required: Mux asset ID. - `meta` object: Mux asset metadata, if available. - `title` string: Asset title from Mux metadata. - `creator_id` string: Creator identifier from Mux metadata. - `external_id` string: External identifier from Mux metadata. - `passthrough` string: Passthrough string from the Mux asset. - `_links` object, required: Hypermedia links for the asset. - `self` object, required - `href` string, required: URL to the Mux asset resource. - `outputs` object: Workflow results. Present when status is 'completed'. - `temporary_vtt_url` string: Temporary pre-signed URL to download the translated VTT file, including when upload_to_mux is false. Expires 7 days after the job completes. - `never_translate_terms_preserved` boolean: Present when never_translate terms were supplied. False when at least one term was not preserved verbatim in the translated captions. Preservation is best-effort: verified, not guaranteed. - `track_id` string: Mux text track ID of the newly created translated captions, distinct from the source parameters.track_id. Present when upload_to_mux is true. - `replaced_track_ids` string[]: IDs of tracks deleted during replacement. Omitted when no deletions were recorded; historical jobs may lack this information. ## Other responses - `401`: Missing or invalid Mux credentials - `403`: The access token lacks robots:read (insufficient_scope), or Robots access is inactive or suspended. For insufficient_scope, use credentials with the required permission. If using an API access token, create a replacement token with that permission. Enabling Robots for an organization does not grant token permissions. - `404`: No job exists for the supplied id - `422`: Invalid job ID - `500`: Server error ## Changes - **2026-10-23** `ed6cb570d60c`: 1 info - endpoint added [Operation history](https://skmtc.dev/muxinc/apis/mux-api/changes/robots/v1/jobs/translate-captions/:JOB_ID/get.md) --- [API](https://skmtc.dev/muxinc/apis/mux-api.md) - [All operations](https://skmtc.dev/muxinc/apis/mux-api/llms.txt) - [OpenAPI document](https://skmtc.dev/muxinc/apis/mux-api/revisions/75b4251a1d96?raw)