![Larix Broadcaster Larix Broadcaster](https://softvelum.com/img/larix_broadcaster_logo.png)
Larix provides the best set of capabilities for remote contribution
New product! Larix Tuner web service allows enabling Premium feature set, back up your app settings, track streaming stats with more features coming soon.
Live encoding and streaming
Larix mobile streaming library enables live transmission from mobile:
- 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
- New: Zixi output (iOS only)
Use Larix to deliver live streams via Zixi protocol.
See more details below. - NDI®|HX2 output
You can use your device as NDI source.
See more details below. - WebRTC output with WHIP signaling.
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).
- Talkback for Larix Broadcaster allows getting audio return feed from studio.
(premium feature) - Multiple simultaneous connections to several destinations.
(premium feature for 3+ connections) - Pause and Stand-by modes, see description below.
- 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)
![SRT is supported in Larix Broadcaster SRT Ready](https://softvelum.com/img/SRT_ready.png)
You can stream to services like Facebook Live, YouTube Live, Twitch, Amazon Interactive Video Service, Dacast, Limelight, Akamai. Check docs reference below for more.
Codecs for SRT, RTMP, RTSP and RIST:
- Video is encoded with interleaved H.264/AVC everywhere.
- H.265/HEVC is available on supporting devices.
This includes transmission over Enhanced RTMP which allows publishing HEVC into YouTube, with HDR on supported devices.
HEVC is a premium feature - Audio is encoded with AAC.
Zixi live streaming (premium feature)
Larix supports live streaming via Zixi protocol from iPhone, iPad and macOS.
- AVC/H.264 and HEVC/H.265 codecs are supported
- SEI timestamps
- Change bitrate according to network conditions
- Use WiFi + Cellular bonding
- FEC control and other specific parameters
- iOS/macOS only
Take a look at Larix joint solutions brief from Zixi Enabled Network web page.
![](https://softvelum.com/img/zixi_logo.png)
NDI®|HX2 output (premium feature)
You can turn your mobile device into NDI source:
- 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
![](https://softvelum.com/img/ndi-logo.png)
WebRTC (premium feature)
Larix Broadcaster supports WebRTC output.
- WHIP signaling is used for communication with server side.
- Video is encoded with H.264/AVC.
- VP8 and VP9 video encoding is supported on Android but depends on your hardware capabilities.
- Audio is encoded with 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 Broadcaster uses Pion implementation of WebRTC API. Special thanks to Sean DuBois and all Pion contributors.
![](https://softvelum.com/img/webrtc-logo-vert-retro-255x305.png)
Larix Grove
Larix Grove format allows you easily distribute your connection and encoder settings via deep links and QR codes.
Image, audio and other features
Larix Broadcaster uses full power of mobile devices cameras to stream live content, basic features include:
- Larix streaming library capabilities.
- Landscape/portrait orientation.
- Live rotation support.
- Front/back cameras hot switch.
- “Always vertical” and “Always horizontal” modes support.
- Content recording and screenshots saving support.
- 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. - 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.
- Overlays support:
- Image layers with external URL and local images;
- Web widgets;
- Text and HTML widgets;
- GPS-based data like coordinates, speed and more
- Timestamp support as defined on unicode.org, e.g. <%date(‘MMM dd, HH:mm:ss’, en_US) %>
- Assign layers for all mode: streaming, pause and stand-by;
Other platform-specific features are listed on Android and iOS pages.
For example, those are UVC OTG USB and background streaming on Android or HDR streaming on iOS.
![](https://softvelum.com/img/larix_broadcaster_logo.png)
Larix Tuner web control service
You can effortlessly manage multiple Larix Broadcaster app instances from Larix Tuner web service to simplify remote production and enhance your streaming workflow.
You can enable Larix Premium features via web service on any number of devices. Larix Tuner also allows creating backups and restore settings of Larix Broadcaster. Coming up: steaming sessions’ stats.
Visit Larix Tuner page for more details and sign up to simply your REMI.
Mentions
You can see Larix Broadcaster usage in a number of use cases.
- YouTube recommends Larix as one of the approved mobile encoders for YouTube streaming.
- NFL Draft of 2020: Sports Video Group News magazine has two articles regarding that virtual Draft. Both have Larix Broadcaster mentioned as part of streaming setup:
“NFL Draft 2020: NFL Media Deploys iPhone Production Kits…” and “NFL Draft Reflections …” - SVG News also covered MLB Draft of 2020 in MLB Draft 2020: MLB Network Embraces Virtual Event… article mentioning Larix Broadcaster usage.
- The Ultimate Guide To DJ Livestreaming In 2020 gives full overview of DJ tool set including Larix Broadcaster.
- AT&T, Media Links Go to Extremes (and Embrace CBRS) To Help ARA Racing Go Live From Remote Locations featuring Larix.
- Ride for Dad: SRT stream from Larix Broadcaster was part of multi-camera motorcycle event stream organized by Epiphan team. Read more about the setup and also watch the resulting video.
Try documentation below to find out more.
Documentation and videos
- Documentation reference shows a lot of examples of Larix setup and usage.
- Best practices for Larix Broadcaster production deployment for live streaming from mobile devices.
- Watch our YouTube playlist with various video tutorials.
- Larix Broadcaster FAQ answers most popular questions about our mobile streaming technologies.
- Contact our helpdesk regarding our mobile technologies.
Larix Screencaster app
Both Android and iOS allow capturing the screen of user device, so Larix Screencaster captures it and uses streaming capabilities of Larix library to encode and stream it.
All protocols and codecs of Larix Broadcaster are available for Larix Screencaster.
Read Larix iOS page and docs reference for iOS Screencaster setup details.
![](https://softvelum.com/img/larix_screencaster_logo.png)
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.