---
title: "Start a live DVR rolling-buffer session"
method: POST
path: "/v1/media/dvr"
tags: ["Video"]
---

# Start a live DVR rolling-buffer session

`POST /v1/media/dvr`

## Request

- Base URL: `http://localhost:9998`
- URL: `http://localhost:9998/v1/media/dvr`
- Auth: HTTP bearer

Buffers a live HLS/DASH stream from now and re-publishes a sliding window as a
synthetic HLS playlist for in-page playback + scrubbing. Premium (Video Editing).
Returns 202 with a `playlistUrl` under the capability-gated `/v1/media/dvr/{id}/…`
serve surface (the unguessable `dvr_` id is the credential).

## Request body

- object
  - `manifestUrl` string, required: HTTPS live HLS/DASH manifest URL
  - `kind` 'hls' | 'dash', required: Live stream container
  - `variantBitrate` integer: Optional variant bitrate selector (bits per second)

## Response `202`

DVR session started (buffering)

- object
  - `id` string, required: DVR session id (dvr_-prefixed)
  - `playlistUrl` string, required: Capability-gated synthetic HLS master playlist URL
  - `state` string, required: Session state (buffering)

## Other responses

- `400`: Invalid request
- `422`: DRM-protected, discontinuous, or non-live source
- `429`: Too many active DVR sessions
- `502`: Could not start the live buffer

---

[API](https://skmtc.dev/modelpiper/apis/toolpiper-api.md) · [All operations](https://skmtc.dev/modelpiper/apis/toolpiper-api/llms.txt) · [OpenAPI document](https://skmtc.dev/modelpiper/apis/toolpiper-api/revisions/6722bf56385c?raw)