How to stream SRT with Blackmagic Web Presenter

In this short tutorial, we’ll demonstrate how you can stream from Blackmagic Web Presenter (or from ATEM Mini Pro) with streamID to Callaba. 

Many users face issues with streamID because devices like Blackmagic don’t support certain characters, like a slash “/”. We'll solve this by using SRT Routing in Callaba. 

We’re going to set up our streaming workflow backwards, meaning that we’ll set up the end receiver first and then we’ll work our way towards the sender (Blackmagic Web Presenter in our case). 

It just makes the most sense; you need to know the destination before you send your package, right?

The workflow we’re going to create looks like this : 

Publisher/Sender [Blackmagic or ATEM] → SRT Route in Callaba → SRT Server in Callaba 

✅ Before you begin

For this tutorial, you'll need Callaba Software.

You have two options for using Callaba: You can either launch it on AWS or install the self-hosted version on any hosting provider of your choice.

• 1 •  Callaba Cloud on AWS

Subscribing to Callaba Cloud will take no more than 5 minutes.

📚 How to launch Callaba on AWS

• 2 • Callaba Cloud Self-Hosted

📚 How to install Callaba Self-Hosted

Let’s begin

1. Create an SRT Server

Go to SRT Servers > click Add New

Name your SRT server, change ports if you want to, then save it.

Once done, click “info” (i) and copy the SRT Publisher URL. 

For now, keep it in your clipboard, we’ll use it in the next step.

Tip: To receive the stream from the SRT Server, use the SRT Receiver URL.

2. Create a Route

Go to SRT Routes > Click Add New

Name your Route

Input type: Listen SRT Port

SRT Port: Specify any port you want.

We’re going to use this port to receive the stream from the sender.

Expand “Advanced Input Settings”

Stream ID (optional): specify your stream ID (the one you’re using in your BlackMagic Web Presenter or ATEM Mini Pro)

Stream destination: SRT Output URL

Output Stream URL: Paste SRT Server’s SRT Publisher URL from your clipboard

Click “Save”

3. Stream to Route

On the SRT Route page, click “info” (i) and copy the Input URL.

Now use this Input URL to send your stream from your device (BlackMagic or ATEM Mini Pro).

Now you're ready to start streaming, using the streamID.

This is the end of this tutorial.

If you have any questions, you can contact us at [email protected]

Happy streaming!

Learn more

• How to launch Callaba on Amazon Web Services
• How to create a playlist of videos with Pay Per View monetization
• Multilingual Web Player
• Set up SRT backup stream in case of main stream interruption

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