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Simulcast (restream) videos

Simulcasting lets you forward your live stream to third-party platforms such as YouTube Live and Facebook Live. To begin simulcasting, select an input and add one or more Outputs.

​​ Add an Output using the API

Add an Output to start retransmitting live video. You can add or remove Outputs at any time during a broadcast to start and stop retransmitting.

curl -X POST \
--data '{"url": "rtmp://","streamKey": "<redacted>"}' \
-H "Authorization: Bearer <API_TOKEN>" \<ACCOUNT_ID>/stream/live_inputs/<INPUT_UID>/outputs
"result": {
"uid": "6f8339ed45fe87daa8e7f0fe4e4ef776",
"url": "rtmp://",
"streamKey": "<redacted>"
"success": true,
"errors": [],
"messages": []

​​ Control when you start and stop simulcasting

You can enable and disable individual live outputs via the API or Stream dashboard, allowing you to:

  • Start a live stream, but wait to start simulcasting to YouTube and Twitch until right before the content begins.
  • Stop simulcasting before the live stream ends, to encourage viewers to transition from a third-party service like YouTube or Twitch to a direct live stream.
  • Give your own users manual control over when they go live to specific simulcasting destinations.

When a live output is disabled, video is not simulcast to the live output, even when actively streaming to the corresponding live input.

By default, all live outputs are enabled.

​​ Enable outputs from the dashboard:

  1. From Live Inputs in the Cloudflare dashboard, select an input from the list.
  2. Under Outputs > Enabled, set the toggle to enabled or disabled.

​​ Manage outputs

List outputsGETaccounts/:account_identifier/stream/live_inputs
Delete outputsDELETEaccounts/:account_identifier/stream/live_inputs/:live_input_identifier

If the associated live input is already retransmitting to this output when you make the DELETE request, that output will be disconnected within 30 seconds.