Efficient products for your streaming infrastructure

Documentation reference for Larix Broadcaster

Here you can find links to all documentation related to Larix Broadcaster and Larix Screencaster setup as well as some useful information.

If you're looking for a list of features, please check these pages: Larix for Android and Larix for iOS.

The anatomy of RTMP URL

One of the most frequent questions about streaming from mobile is: how can the connection URL be specified? Since RTMP is the most common protocol used for mobile delivery, here's how it's made.

Every RTMP URL has these parts:

  • Server and application name, e.g. rtmp://yourserver.com:1935/live or rtmps:// It has a protocol prefix, a domain or URL, a port (optionally) and an application name. For YouTube Live it would be "rtmp://a.rtmp.youtube.com/live2"
  • Stream name or Stream key. It's also usually some alphanumeric stream name. E.g. for YouTube Live it's like "abcd-efgh-abcd-efgh".

Combining these parts together will create a URL which you will insert into Connection URL field in Larix Broadcaster settings (see the links to full instructions below).
For example if you see Primary Server URL in YouTube Live as "rtmp://a.rtmp.youtube.com/live2" and Stream Name as "abcd-efgh-abcd-efgh", then your full URL will be "rtmp://a.rtmp.youtube.com/live2/abcd-efgh-abcd-efgh".
Notice that YouTube requires using video+audio mode for streaming and has a number of other recommendations and requriements .
Some services like Facebook Live require using SSL connection. This means the protocol prefix need to be "rtmps://" instead of regular "rtmp://".

Streaming setup

Our instructional videos:

Wowza team created a video covering Engine and Cloud working with Broadcaster and Player:

General setup instructions for Larix apps:

Larix Grove format for deep links and QR codes can be used to distribute your streaming settings.

Larix Talkback allows getting audio return feed into Larix Broadcaster.

Third-party tutorial videos:

We test our products properly before releasing into production. Here are overview pages describing how we test our solutions.

If you use rule-of-thrids and other visual features of Larix, you may want to watch this video by Jan Ozer:
Video Camera and Webcam Framing for Live and VOD video

Mentions and usage

Larix Broadcaster usage is mentioned by a number of industry professionals.

Larix Grove

Larix Grove is a format which allows easily distribute your connection and encoding settings via deep links and QR codes.
Visit Larix Grove page to learn the spec and create your settings import with online wizard.

Screencasting from iOS via Larix Screencaster

Apple requires additional screencasting setup for Larix Screencaster besides the streaming part.
Notice that if you stream your screen, you can only use your microphone. If currently opened application supports ReplayKit, then you'll be able to stream its sound. This is a limitation of iOS.
Install and set up Larix Screencaster streaming and then use these descriptions to perform the setup:

Larix Player

Mobile SDKs

If you find our apps useful and you'd like to create your own applications based on Larix Broadcaster or Larix Player, you may consider subscribing for our mobile SDKs.
The price is 300 USD/m for Larix SDK.
See all terms and prices for mobile SDKs.


You can find many SDK frequently asked questions about Larix Broadcaster and Larix mobile SDK usage.

If you have more questions, please feel free to contact our team.