generated: '2026-09-01'
method: searched
source: >-
  https://docs.tvunetworks.cn/api-414798733 (register webhook), the export surface's callbackUrl
  field (https://docs.tvunetworks.cn/ Export folder) and the object-hold callbackUrl
  (route-object object service), all captured verbatim in openapi/
asyncapi_published: false
asyncapi_note: >-
  TVU publishes no AsyncAPI document. Searched the documentation site index (403 endpoints), the
  github.com/tvunetworks organisation and /asyncapi.yaml on every TVU host — nothing. The event
  surface below is real and documented, but it is described only inside the REST contract, so
  a consumer must read prose and examples to learn the delivered payload shape.
transport: https
delivery: 'HTTP POST to a consumer-supplied URL'
security: 'None documented — TVU publishes no signing secret, HMAC header, or replay/timestamp guard for webhook delivery.'
retry_policy: 'Not published.'
subscriptions:
- name: metadata-uploader
  kind: registration-endpoint
  operationId: register_webhook_414798733
  path: /api/metadataproto/MetadataUploader.RegisterWebhook
  method: post
  host: https://mma.tvunetworks.com
  spec: openapi/tvu-networks-search-api-openapi.yml
  docs: https://docs.tvunetworks.cn/api-414798733
  register_body:
    webhookURL: 'string (required) — the consumer URL TVU will POST to'
    operation: 'string (required) — "register" or "unregister"'
    sourceObject: 'array of string (required) — sourceObject IDs to watch; an empty list means all sourceObjects'
  delivered_payload:
    status: 'string — "start" or "stop"'
    sourceObjectId: string
    mediaObjectId: string
    previewMediaPath: '{path, duration, fileSize, startTimestamp, endTimestamp}'
    highResMediaPath: '{path, duration, fileSize, startTimestamp, endTimestamp}'
    thumbnailPath: string
    mediaFileType: integer
  note: >-
    The delivered body is documented only as a fenced example inside the operation description —
    it is not modelled as a schema, so no generator can produce a typed consumer from this
    contract. Registration is the only lifecycle control: there is no list-subscriptions or
    test-delivery operation.
- name: export-job-completion
  kind: per-request-callback
  field: callbackUrl
  spec: openapi/tvu-networks-export-openapi.yml
  description: 'Webhook URL to notify when the export completes, supplied on the export job request alongside the idempotency uuid.'
  delivered_payload: 'Not published.'
- name: object-hold-state-change
  kind: per-request-callback
  field: callbackUrl
  spec: openapi/tvu-networks-uncategorized-openapi.yml
  operationId: Place_a_hold_on_an_object_to_reserve_it_for_exclusive_use_by_an_application_473290269
  description: 'An optional callback URL is invoked when the hold state of a held object changes.'
  delivered_payload: 'Not published.'
streaming_note: >-
  TVU's actual real-time surface is media transport, not an event bus: SRT, RTMP, RTSP, HLS,
  NDI, RTP/Pro-MPEG-FEC, Zixi and TVU's own ISSP container, each with a published URL grammar
  (https://docs.tvunetworks.cn/doc-5661551). Those are media protocols, not an AsyncAPI-shaped
  message API, and are recorded in conformance/ rather than here.
gaps:
- 'No AsyncAPI document.'
- 'No signature, shared secret or timestamp on delivered webhooks — a consumer cannot verify a delivery came from TVU.'
- 'No published retry, backoff or dead-letter behaviour.'
- 'Two of the three event surfaces publish no payload shape at all.'