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".
Some services like Facebook Live now require using SSL connection. This means the protocol prefix need to be "rtmps://" instead of regular "rtmp://".

Streaming setup

Take a look at general setup instructions for Larix apps:

Screencasting from iOS via Larix Screencaster

Apple requires additional screencasting setup for Larix Screencaster besides the streaming part.
Use these sources to perform the setup:

SLDP Player

Mobile SDKs

If you find our apps useful and you'd like to create your own applications based on Larix Broadcaster or SLDP 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.

Mobile solution usage example

Take a look at Mobile solutions snapshot where we show how you can use mobile streaming with other Softvelum products.

Glass-to-Glass Delivery with SRT: the Softvelum way - a post in SRT Alliance blog shows how Softvelum products can be used for building delivery from source to viewer.
Larix Broadcaster and SLDP Player mobile solutions are shown as part of that concept.


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

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