> ## Documentation Index > Fetch the complete documentation index at: https://docs.up.telestream.com/llms.txt > Use this file to discover all available pages before exploring further. # Start a recording > Opens a recording on the channel. Capture begins once a worker picks the recording up, so the returned recording is scheduled rather than already recording. The channel must be active with no open recording, and its live source must be recordable: a source that is not answers 409 with the reason as the problem type, and a source that could not be resolved in time answers 503 with Retry-After. Requires the `capture:access` permission. ## OpenAPI ````yaml https://api.up.telestream.com/capture/v1/openapi.json put /{space_id}/channels/{channel_id}/start openapi: 3.1.0 info: contact: email: cloudsupport@telestream.net name: API Support url: https://www.telestream.com description: >- Programmatic access to recording: the channels that record your live sources to storage, and the recording settings they record with. Compatibility. Within a version we only add: new endpoints, new optional request fields and new optional response fields, and new problem types. Clients must ignore response fields and problem types they do not recognise, and fall back to the HTTP status class for an unrecognised problem type. Anything else - removing or renaming a field, narrowing a type, requiring a previously optional field, a new enum value in a response, or changing the status for an existing condition - arrives as a new major version under a new path. A version stays available until it is retired. A retired operation answers 410 Gone with the operation-retired problem type; a retirement is announced when it is decided rather than on a fixed schedule. license: name: Apache 2.0 url: http://www.apache.org/licenses/LICENSE-2.0.html termsOfService: https://www.telestream.net/telestream-cloud/terms.htm title: Telestream Capture API version: 1.0.0 servers: - url: https://api.up.telestream.com/capture/v1 security: - apiKey: [] tags: - description: What the presented API key may do. name: Access - description: Channels and their recording lifecycle. name: Channels - description: How a channel records. name: Recording settings - description: Reusable named recording settings, managed independently of any channel. name: Recording settings templates paths: /{space_id}/channels/{channel_id}/start: parameters: - $ref: '#/components/parameters/SpaceId' - $ref: '#/components/parameters/ChannelId' put: tags: - Channels summary: Start a recording description: >- Opens a recording on the channel. Capture begins once a worker picks the recording up, so the returned recording is scheduled rather than already recording. The channel must be active with no open recording, and its live source must be recordable: a source that is not answers 409 with the reason as the problem type, and a source that could not be resolved in time answers 503 with Retry-After. Requires the `capture:access` permission. operationId: StartChannelRecording responses: '202': content: application/json: schema: $ref: '#/components/schemas/Recording' description: The recording was opened. '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '409': $ref: '#/components/responses/Conflict' '500': $ref: '#/components/responses/InternalError' '503': $ref: '#/components/responses/ServiceUnavailable' components: parameters: SpaceId: description: The space to act in. in: path name: space_id required: true schema: format: uuid type: string ChannelId: description: The channel's id. in: path name: channel_id required: true schema: format: uuid type: string schemas: Recording: description: One attempt of a recording job. properties: aborted: description: >- Whether the recording was asked to stop immediately rather than run on to its end point. type: boolean attempt_number: description: Zero-based position of this attempt within its request. type: integer ended_at: format: date-time type: string id: format: uuid type: string outputs: items: $ref: '#/components/schemas/RecordingOutput' type: array request_id: description: Groups every attempt of one recording job. format: uuid type: string requested_start_at: description: With requested_stop_at, the window the recording was asked to cover. format: date-time type: string requested_stop_at: format: date-time type: string started_at: format: date-time type: string status: $ref: '#/components/schemas/RecordingStatus' required: - id - request_id - attempt_number - aborted - status type: object RecordingOutput: properties: file_name: type: string location_url: description: Where the output is written, as a `tmi://` URL. type: string required: - file_name - location_url type: object RecordingStatus: description: >- `scheduled` is requested but not started; `recording` is in progress; `complete` finished as requested; `failed` hit an error; `aborted` was cut short, so its outputs may be incomplete. enum: - scheduled - recording - complete - failed - aborted type: string Problem: description: An RFC 9457 problem document. properties: detail: description: >- What went wrong this time, in words meant for a person. Branch on `type` rather than parsing it. type: string instance: description: The request path the problem occurred on. type: string status: description: >- The HTTP status code, repeated so a logged payload is self-describing. type: integer title: description: A short, stable summary of the problem type. type: string trace_id: description: Correlates this response with the server-side logs. type: string type: description: >- Identifies the kind of problem. Branch on this rather than on the message. type: string required: - type - title - status type: object responses: BadRequest: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: The request could not be understood. Unauthorized: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: The request carries no usable API key. headers: WWW-Authenticate: description: The scheme to present a key with. schema: type: string Forbidden: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: The caller may not perform this action in this space. NotFound: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: The resource does not exist. Conflict: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: >- The action is refused by the current state of the resource, or of something it depends on. The problem type names the condition to fix. InternalError: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: The request could not be completed. ServiceUnavailable: content: application/problem+json: schema: $ref: '#/components/schemas/Problem' description: A transient condition prevented the request; it is worth retrying. headers: Retry-After: description: Seconds to wait before retrying. schema: type: integer securitySchemes: apiKey: description: >- A platform API key, presented as `Authorization: Bearer `. Each operation says which permission the key needs. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.