June 11, 2019

Streaming from Larix Broadcaster to YouTube Live

YouTube Live became extremely popular lately and many users of Larix Broadcaster for Android and iOS and Larix Screencaster for Android also started publishing live video there. We get questions about correct setup of Larix products so this brief instruction explains this process.

Larix Broadcaster supports AVC/H.264 and HEVC/H.265 codecs for ingesting into YouTube.
Read more about Enhanced RTMP spec adoption for more information.

To proceed with YouTube Live you need to get familiar with service setup using this support page. When you set up YouTube Live transmission, you get these settings:

Primary Server URL: rtmp://a.rtmp.youtube.com/live2
Stream Name: 1234-5678-abcd-efgh
Larix uses single line for target URL setup so just need to use URL+Key as your connection URL, like this one:

From Larix UI perspective the setup is performed with the following steps. We assume you've installed Larix using links from this web page.

Open the app and click on gear icon to see the main menu. Go to Connections list.

Now click on New connection menu. It will open a new connection dialog. Enter any descriptive name for a new connection and then insert your connection URL.

One more tip specific for YouTube:
YouTube requires both video and audio in the incoming stream, so make sure you have Mode set to Audio + Video.

Once you save changes, a new connection will appear in connections list. To use this new connection for further streaming, just click on its respective checkbox.

Once you get on the main video preview screen, you can tap on big red circle to start streaming.

This setup is applicable to Larix Broadcaster for both Android and iOS, as well as to Larix Screencaster for Android.

Notice that if you need to send the ready-to-go setup instructions to your operator, you can use Larix Grove format for that.

Visit our documentation reference page for more setup information.

If you have questions regarding Larix Broadcaster or other mobile products, please contact us via our helpdesk.

Related documentation

Softvelum mobile solutionsLarix documentation reference pagePublish from Nimble Streamer to YouTube Live,


  1. This doesn't seem to work. "can't connect to YouTube" is the error message I get. I've tried with the username.streamkey and only streamkey (after rmtp address) What am I missing?

    1. There seem to be an error on the screenshot, we'll fix this today.
      Please use this kind of URL: rtmp://a.rtmp.youtube.com/live2/abcd-efgh-abcd-efgh or take a look at this page for explanation: https://softvelum.com/larix/docs/

  2. I m getting Youtube live unknown failure msg.. pls help

    1. Make sure you've added URL correctly and use video+audio. Also try frame rate at 30fps.


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