Efficient products for your streaming infrastructure


Larix Broadcaster for Android

Android apps and SDK for capturing and streaming

Softvelum provides a set of mobile streaming development tools for creating user-generated mobile media on Android.AndroidLarix Broadcaster
Minimum supported Android version is 4.3 (Jelly Bean), API 18+.

Encode and stream content with Larix streaming library

We provide streaming library with the apps framework to use it properly.
Key content streaming features include:

  • SRT in Push (Caller), Listen and Rendezvous modes with errors recovery and encryption, libsrt version 1.4.2.
  • RIST protocol Push mode support: RIST Main and Simple Profile, librist 0.2.0RC2.
    Use "rist://ipaddress:port" for new connection URL.
  • RTMP and RTSP publishing.
  • RTMPS and RTSPS support - RTMP and RTSP over SSL
  • Talkback for Larix Broadcaster allows getting audio return feed from studio.
  • Multiple simultaneous connections to several destinations.
  • Full support for Facebook Live, YouTube Live, Twitch, Wowza Streaming Cloud, Amazon Interactive Video Service, Periscope, Dacast, Akamai, Limelight and other online services. All popular authentication methods are supported.
    Check docs reference for setup instructions.
  • Watch connections setup video tutorial

Codecs. Video is encoded with interleaved H.264/AVC everywhere and H.265/HEVC on supporting devices. Audio is encoded with AAC.
All supported protocols can carry those codecs, with HEVC over RTMP as non-standard feature.

ABR (adaptive bitrate) transmission is available in 3 modes:

  • Logarithmic descend - gracefully descend from max bitrate down step by step. Retries to raise back to previous step every minute. Best fit for good networks.
  • Ladder ascend - first cut bitrate by 2/3 and increase it back to normal as much as possible. Retries to raise back to previous steps in 15 seconds, 1.5 and then 5 minutes. Best fit for networks with big losses.
  • Variable FPS can be used as an option, it will reduce bitrate by decreasing FPS in addition to changing the bitrate value. Notice that it heavily depends on your device' capabilities and may not work on some hardware.
This feature is disabled by default, it's enabled in Video menu. You can read Q6 in Larix FAQ to learn more technical details.

Larix Grove format. Grove allows you easily distribute your connection and encoder settings via deep links and QR codes.
Visit Larix Grove page for more details.

Go to Larix Broadcaster SDK for Android page

Larix Broadcaster free app

You can use streaming capabilities for free using our fully-functional Larix Broadcaster apps.
Besides encoding and streaming features, Larix Broadcaster uses full power of mobile devices:

  • All features of Larix streaming library
  • Landscape and portrait various modes support with device dynamic orientation.
  • "Always vertical" and "Always horizontal" modes.
  • Watch image and stream rotation tutorial.
  • Front and back cameras with hot switch.
  • Multi-camera support for Android 10+: you can choose which physical and logical cameras to flip between.
  • Video+audio, video only and audio only modes.
  • Background streaming when app is not in focus. Watch video tutorial to see it in action.
  • Pause the stream: long tap on Start will pause the stream without disconnecting it.
    Video track will contain a black screen, audio track will contain silence.
  • Audio-only capture mode: disable preview, stream from background, no video in output stream.
  • Both fixed and variable FPS are supported, full list of supported FPS values is created specifically for each user device.
  • Full camera control - focus, exposure, white balance, anti-flicker etc.
  • Recording stream to file, making split files and saving screenshots.
    On Android 8+ it's possible to select any folder, including SD cards.
  • Pinch-to-zoom.
  • Custom volume key function setup via Settings / Advanced options / Volume keys menu.
  • Bluetooth audio.
  • Flash light.

This tutorial shows the setup of outgoing connections in Larix Broadcaster.

Visit documentation reference to learn more about Larix Broadcaster setup and usage.

Get it on Google Play

The APK for Larix Broadcaster can be downloaded here.

Larix Screencaster free app

Android

Android allows capturing the screen of user device, so Larix Screencaster uses streaming capabilities to capture the screen, encode and stream it.

  • All features of Larix streaming library.
  • Encode screen content in H.264/AVC and H.265/HEVC.
  • On Android 10, record audio from apps which support external recording. Choose Audio -> Sound settings -> Media sounds.
  • Select sample rate and stereo/mono for audio.
  • Saving the stream to file.
  • Larix Grove support.

Get it on Google Play

The APK for Larix Screencaster can be downloaded here.

Visit documentation reference to learn more about Larix Screencaster setup.

Larix Broadcaster SDK

You can get Larix library, free apps and other source code examples by subscribing to our SDKs.
This means you can create your own mobile solutions and customize our solutions to your streaming use cases and scenarios.

Go to Larix Broadcaster SDK for Android page

Documentation and FAQ

This product uses SRT library distributed under MPL-2.0 license.
This product uses librist library distributed under BSD 2-clause "Simplified" license.
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit.
This software uses libuvc library and libusb libraries.This software is based in part on the work of the Independent JPEG Group.

Larix Player

If you need not only to produce but to play live stream on your mobile device, check out Larix Player for Android and iOS.