Larix Broadcaster for Android

The core of our tools is Larix streaming library.
Key content streaming features include:

• SRT publishing:
  • Push (Caller), Listen and Rendezvous modes
  • Multipoint listener support
  • latency, maxbw, streamid and other parameters
  • Uses libsrt version 1.5.3.
• RTMP streaming:
  • Publishing to any standard recipient
  • SSL support for RTMPS
  • Enhanced RTMP spec support to deliver HEVC via RTMP (premium)
  • Watch How to stream HEVC to YouTube via RTMP video tutorial
• NDI®|HX2 output (premium feature)
  You can use your device as NDI source, see details below.
• WebRTC output with WHIP signaling. (premium feature)
  See more details below.
• RIST protocol Push mode support: RIST Main and Simple Profile, librist 0.2.7.
  Use “rist://ipaddress:port” for new connection URL.
• RTSP publishing, including SSL support (RTSPS).
• Multiple simultaneous connections to several destinations. (premium feature for 3+ connections)
• Pause and Stand-by modes, see description below.
• Talkback for Larix Broadcaster allows getting audio return feed from studio. (premium feature)
• Adaptive bitrate (ABR) video is supported via logarithmic descend, ladder ascend, hybrid approach and variable FPS.
  Read respective question in Larix FAQ to learn more technical details.
• Insert SEI time metadata and specify NTP server, this allows synchronizing streams on server side.
  (premium feature)
  Use Advanced menu to operate it. Watch video tutorial to see it in action.

NDI®|HX2 output (premium feature)
You can turn your mobile device into NDI source
for just $19.99 per month in-app subscription:

• Output streaming via NDI®|HX2
• AVC/H.264 and HEVC/H.265 codecs are supported
• Preview stream support
• Discovery Server and connection metadata
• Handle zoom from NDI Studio Monitor
• NDI SDK 2023-04-10 r134150 v5.5.4

WebRTC (premium feature)
Larix Broadcaster supports WebRTC output.

• WHIP signaling is used for communication with server side.
• Stream is encoded with H.264/AVC and Opus.
• Multiple simultaneous connections as described above.
• Tested with Nimble Streamer, Cloudflare Stream and Dolby.io.
• Watch Ingesting WebRTC from Larix Broadcaster into Nimble Streamer, video tutorial featuring iPhone low latency output via WHIP.
• Read Broadcasting Mobile Native WebRTC Streams by Dolby.io showing Larix WebRTC usage example.

Larix Grove format allows you easily distribute your connection and encoder settings via deep links and QR codes.

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 device hardware:

• 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.
• Concurrent cameras support for Android 11+: side-by-side and picture-in-picture streaming from front & rear cameras simultaneously. This requires devices which support concurrent camera usage, like Google Pixel 5.
• Video+audio, video only and audio only modes.
• Background streaming when app is not in focus. Watch video tutorial to see it in action.
  (premium feature)
• Pause the stream: when streaming, long tap on Start will pause the stream without disconnecting it.
  Video track will contain a black screen, audio track will contain silence.
  A separate set of overlays can be mapped onto pause.
• Stand-by mode: when stopped, long tap on Start will start stream in pause mode, waiting to start with the camera image.
  A separate set of overlays can be mapped onto stand-by.
• Input audio gain control
• 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.
• 60FPS support: most devices with 60FPS cameras don’t provide this capability to third-party apps. So if your device has that support, we do not guarantee Larix to provide it.
• 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.
• Support for OTG USB devices as video and audio sources.
• Pinch-to-zoom.
• Custom volume key function setup via Settings / Advanced options / Volume keys menu.
• Bluetooth audio.
• Flash light.

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.