Larix Broadcaster

Apps and SDKs for capturing and streaming from mobile devices

Softvelum provides a set of tools for creating user-generated mobile media.

Larix streaming library

Mobile streaming library provides transmission from mobile.

• 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.
• 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 allow streaming to several destinations at the same time.
• You can stream to services like Facebook Live, YouTube Live, Twitch, Wowza Streaming Cloud, Amazon Interactive Video Service, Limelight, Akamai, Dacast as well as media servers like Wowza, Nimble Streamer, Red5 and others. All popular authentication methods are supported. Check docs reference for more examples.

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.

Adaptive video bitrate (ABR) is supported 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.
• Hybrid approach - decrease the bitrate by the ratio of lost packets and try to get back every 60 seconds by 500Kbps.
• Variable FPS can be used as an option, it will reduce bitrate by decreasing FPS in addition to changing the bitrate value.

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.

Larix Broadcaster free app

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.
• Audio-only capture mode: disable preview, stream from background, no video in output stream.
• Other platform-specific features are listed on Android and iOS pages.

Larix Broadcaster sources are included in Larix Broadcaster SDK which is described later on this page.

Mentions

Larix Broadcaster usage is mentioned by a number of industry professionals.

• Sports Video Group News has two articles regarding NFL Draft of 2020. 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.
• Guide to RTMP live streaming apps for iOS post in Mux.com blog describes Larix as the best free option to go live from iOS.
• Visit documentation reference to find out more.

Larix Screencaster free 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.

Larix Screencaster sources are included in Larix Broadcaster SDK.

Larix Broadcaster SDK

For those who need to add live streaming functionality into their mobile apps, we provide Larix Broadcaster SDK. You can create your own mobile apps or just customize our apps to your use cases.

All Larix SDKs include

• Larix streaming library.
• Source code of Larix Broadcaster and Larix Screencaster.
• Sample apps sources.

Visit SDKs pages to find out more.

Go to Larix Broadcaster SDK for iOS Go to Larix Broadcaster SDK for Android

Documentation, FAQ and videos

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

Check Larix Broadcaster FAQ with most popular questions about mobile streaming technologies.

Watch our YouTube playlist with various video tutorials.

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.