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How to stream on Twitch and Facebook at the same time

Twitch is built for people who come looking for live streams; Facebook reaches the friends, family and groups who already follow you. Streaming to both from one OBS means nobody has to switch apps to watch.

Here are two ways to do it with Multistream: Multistream Cloud, where OBS uploads once and the cloud sends the stream to Twitch and Facebook, and the free Multistream app, where your PC sends both copies.

Method 1: Multistream Cloud (one upload for every platform)

Multistream Cloud takes one stream from OBS and sends a copy to Twitch and Facebook, and to up to 12 platforms in all. Your internet only uploads that one stream, so adding a platform doesn't need a faster connection. It comes with Pro, $10/mo.

  1. Create your Multistream account, then get Pro on your Account page.
  2. In the Studio, step 1 (Pick platforms), click Add a platform and add each one:
    • Twitch: click Sign in with Twitch, then Authorize in the Twitch window. Multistream reads your stream key for you.
    • Facebook: paste the stream key from Live Producer → Streaming software, and turn on Use a persistent stream key there so it stays the same.
  3. Install Multistream for OBS (Windows 10 or 11, OBS 31 or newer) and open OBS. The Multistream dock opens on the right.
  4. In the dock, click Sign in with your browser and approve it.
  5. The dock's pre-flight check looks at your OBS settings, Multistream Cloud, your platforms and where OBS sends. If OBS isn't sending to Multistream yet, click Point OBS at Multistream.
  6. Click Go live on 2. After a 3, 2, 1 countdown, OBS starts streaming and Twitch and Facebook go live.

If OBS or your internet drops, Pro keeps your platforms live on your BRB clip for up to 30 minutes, and when OBS is back you carry on in the same broadcast, with the same chat. Turn it on under Disconnect protection.

Method 2: the free Multistream app (from your own PC)

The free Multistream app for Windows can send the copies from your own PC instead. Your upload then carries one copy for each platform, and if your PC's internet drops, your platforms drop with it. Run the app's Speed test first to see what your connection can carry, or work it out with the free upload calculator.

  1. Download the Multistream app for Windows 10 or 11 and open it.
  2. Go to Multistream → Go live and set Where the relay runs to This PC.
  3. Open Setup guide and click Add a platform for Twitch and Facebook. Twitch, YouTube and Kick accounts you've connected in the app add in a click; the others take their stream key.
  4. Install Multistream for OBS and open OBS. Without Pro, the Multistream dock sends your stream through the app on this PC, so keep the app open.
  5. Click Go live on 2 in the dock. Your PC uploads one copy for each platform.

Good to know for Twitch and Facebook

Make Facebook's stream key stay the same. In Facebook's Live Producer, under Streaming software, turn on Use a persistent stream key. Without it, Facebook can give you a new key for each stream and you'd paste it into Multistream every time.

Who can go live from streaming software. Facebook asks for an account at least 60 days old, and a Page or professional-mode profile with at least 100 followers.

Twitch's simulcasting rules. Twitch lets you stream the same thing on Facebook, as long as you don't point Twitch viewers to your Facebook stream (no links, titles or chat commands sending them there), Twitch's stream isn't worse than Facebook's, and you don't show Facebook chat on your Twitch stream. Multistream's pre-stream check reminds you when Twitch is on your list.

One picture for both. Twitch and Facebook both show a 16:9 picture, so the stream OBS already sends works for both. There's nothing to change in OBS.

Check your upload before going free. With the free app, your upload carries a full copy for each platform. Run the app's Speed test or the free upload calculator first; with Pro, OBS uploads one stream however many platforms you add.

Questions, answered

Can you stream on Twitch and Facebook at the same time?

Yes. Twitch allows simulcasting under its simulcast rules: keep Twitch's stream at least as good, don't send Twitch viewers to Facebook, and don't show Facebook chat on your Twitch stream.

Where do I find my Facebook stream key?

In Facebook's Live Producer, under Streaming software. Turn on Use a persistent stream key there so it stays the same between streams.

Do I need two copies of OBS?

No. OBS sends one stream to Multistream, and Multistream sends it to Twitch and Facebook.

Can I do Twitch and Facebook for free?

Yes, with the free Multistream app, which sends both copies from your PC, so your upload carries both. With Pro ($10/mo), Multistream Cloud takes one upload and sends both copies for you.

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