nanoStream Webcaster Client Release 5.11.0

We have released the nanoStream Webcaster Client 5.11.0.

Release Notes

This new version adds a new feature to the nanoStream Webcaster live streaming platform. You can now add a new source type based on HTML5 canvas or other stream sources to enable user-generated live sources, separate to live camera or device screens.

To use this feature, a new API call was added. It adds flexibility in terms of what
you can present to your customers and covers a wide range of additional use cases: setMediaStream().

Possible Use Cases

  • Mixing of different video sources into one stream
  • PIP (picture in picture)
  • Mix of different audio sources
  • Preprocessing of video and audio in the browser
  • Video overlays, e.g. rendering animations, drawings, watermarks and logos
  • Use any HTML5 canvas as a live source

General Workflow

1) Acquire different video/image and/or audio sources
2) Mix sources into one MediaStream

  • Video: in a canvas, write your render loop where you mix the sources via HTML canvas drawing
  • Audio: with the WebAudio API

3) Pass the resulting stream to the webcaster API


Samples & Documentation

Please refer to the following, included samples:

  • “webcast_external_mixing_sample.html” or online via this link (please replace XXX with your API key)
  • “webcast_external_stream.html” or online via this link (please replace XXX with your API key)


  • You are in control of the resolution and framerate of the stream, the render loop is in your control.
  • You are responsible to write a render loop that roughly maintains the target framerate.
  • The mixed stream must not change resolution during the webcast (before calling stopBroadcast()).
  • The mixed stream must not be ended or deleted during the webcast.
  • The browser tab has to be in focus while the webcast is running (tab-throttling).



  • Inofficial pre-release version.


  • Improved error handling. Additional server side errors are now visible in the public API, server errors start with 10xxxx.
  • The errors “userinfo” property now optionally contains a metadata object. This object holds additional information for the user, e.g. when logging.


  • Improvement of inner API state, in cases were recovering from a broken broadcast was not possible.


5.11. 0 Release Package Download / Complete Bundle Package
and Demo Page