The Ultimate Guide to Hassle-Free Castr Live Streaming

How to Live Stream to YouTube, Facebook, Twitter and Other Platforms with Castr

Castr is a professional streaming platform that includes all the elements for live video streaming, including hosting videos, scheduling and monetization. It's not a live streaming studio in the classic sense (like StreamYard, Restream, etc.) - for that you will need an encoder software, like OBS.

Castr connects to your encoder through the dashboard and broadcasts the signal that you send. It provides a stream key and URL like the ones you collected from your social platforms. Castr needs to be set as a custom 'RTMP' link for the encoders that provide this option.

This article is a step-by-step guide on Castr live streaming to multiple platforms. It also presents a way to make sure you don't run into any live streaming issues, especially those related to Internet connectivity.

Fast and Stable Internet Connectivity - Must Have for Successful Live Streams with Castr

Internet is what makes or breaks a successful live broadcast, no matter what live streaming software you're using, be it Castr, OBS or another one. That's why you should definitely think this through.

Having an extra Internet source while live streaming helps, but you have to think how long it takes for you and/or your streaming device (camera, computer, mobile device) to switch between the 2 connections. It's usually a minimum of 10-20 seconds - and that's an optimistic estimate.

That's why you need to use all available Internet connections at once instead of keeping them as a backup and switching between them. That is called Internet bonding (a.k.a. channel bonding, link aggregation, etc.). Speedify is the only app that can combine multiple internet sources into one bonded super-connection for more stable and secure live streaming, video calling, online gaming and web browsing.

Live Streaming to Multiple Platforms with Castr - Requirements

As explained before, Castr is not a full live streaming studio type solution. That's why, alongside Castr, you'll also need an encoder for your live stream, like OBS.

Here's what you need in order to engage in Castr live streaming on your computer (Windows, MacOS or Linux):

If you'll be live streaming with Castr from your iPhone, iPad or Android mobile device, you'll need the following:

For all the above setups, the idea with Speedify is to use two or more connections together at once, in order to hit your target bitrate and avoid flaky Internet problems while simulcasting with Castr.

    Additional accessories - such as an external battery pack, dedicated microphones, extra lighting, etc. - may be required especially if you're doing IRL streaming.

    4 Steps for Castr Live Streaming to Multiple Platforms while Avoiding Issues


    Use one or multiple of the following on the computer you'll be live streaming using Castr and OBS Studio from:

    • wired Ethernet connection
    • external USB 5G / 4G LTE cellular adapter
    • Wi-Fi network / additional USB Wi-Fi adapters
    • tethered smartphone

    If you're live streaming using a mobile device with Larix, the easiest way is to carry two cellular phones. One can be your streaming device running Larix and the other one would just be used for its cellular data - you would create a Wi-Fi hotspot to connect the streaming device to it. That way you would combine cellular data with Wi-Fi from the second phone on the streaming device.


    If you don't have a Speedify subscription yet, you can get it from our website store, the Apple App Store or the Google Play Store.

    Run Speedify and log into your account. All the active Internet sources you connected at step 1 should be recognized by Speedify. All you have to do now is choose a server to connect to - the fastest server options usually works best.


    If streaming from a computer, you'll need to:

    1. Get started with Castr.
    2. Set up OBS with Castr.
    3. Configure Castr for simulcasting (multiple platform streaming) - link to the platforms you wish to live stream to.

    If streaming from a mobile device, things are simpler:


    Before going live with your stream, make sure:

    • you are able to see the video you want to broadcast in the preview window
    • audio is working
    • Speedify is running, and it combines the Internet sources you're connected to.

    Ready to go? Just hit the button and make it big!

    The good thing about Speedify is that it prioritizes your live streams over other Internet traffic. Thus,  you are avoiding issues such as low quality, choppy and laggy videos, buffering and even disconnects from the streaming server.

    Download Speedify

    Speedify is the only app that combines your wifi, cellular, wired, and even your friend’s phone signals – into one ultra-fast and super secure link that keeps you all connected for the best possible live streaming, video calling, or just posting to your favorite app.


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