Larix Broadcaster

1.07K reviews
Content rating
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About this app

Larix Broadcaster is freeware, simple and powerful tool for remote contribution.
It allows streaming live content from your mobile device in real-time over WiFi, 3G, LTE, 5G via SRT/RTMP/RTSP/RIST.

~ SRT streaming: Caller (Push), Listen, Rendezvous modes, libsrt version 1.5.0
~ RTMP/RTSP streaming
~ RTMPS/RTSPS streaming over SSL
~ RIST protocol: Push mode with RIST Main and Simple profiles, librist version 0.2.7
~ Multiple simultaneous output connections.
~ Talkback: get audio return feed via SRT/RTMP/Icecast/SLDP. More:
~ Pause streaming: long tap on Start pauses the stream without disconnect; video is black screen, audio is silence
~ Stand-by stream mode: when stream is stopped, long-tap to start a stream in pause mode with separate set of overlays.
~ Audio-only mode: no video capture, works in background; use Setting -> Audio menu
~ AVC/H.264 and HEVC/H.265 encoding with AAC audio
~ HEVC over RTMP as a non-standard feature
~ Landscape and portrait, live rotation, "always horizontal" and "always vertical" modes
~ Front and back cameras hot switch
~ Multi-camera support on supporting Android 10+ devices
~ Concurrent cameras support for Android 11+: side-by-side and picture-in-picture streaming from front & rear cameras simultaneously. Requires devices which support concurrent camera usage, like Google Pixel 5
~ Audio gain control and audio source selection
~ Larix Grove: easy links distribution via deep links and QR codes. More:
~ Saving to MP4, splitting videos into sections, making screenshots.
~ White balance, exposure, anti-flicker, video encoder profiles, FPS selection
~ Video stabilization on supporting devices
~ Input audio gain control
~ Background option: keep streaming with display turned off or while not in focus. Enable it in Settings / Advanced options / Background streaming.
~ 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.

Insert SEI metadata for time sync up, along with specifying NTP server. Enabled in Advanced menu.

Adaptive bitrate (ABR) is available with logarithmic descend, ladder ascend, hybrid approach for SRT and variable FPS. It's disabled by default, check Video menu to use. Learn more in Q11 here:

Overlays and widgets support:
~ Image layers
~ Web widgets
~ HTML layers and custom CSS
~ Text and date/time layers.
~ Assign layers for all mode: streaming, pause and stand-by
~ Enable layers on-the-fly

JOIN BETA program to get new features first!

~ Streams to any media server like Nimble Streamer, Wowza Streaming Engine, Red5, Flussonic or any other.
~ Streams to vMix, OBS Studio and ortther desktop software.
~ Streams to Facebook Live, YouTube Live, Twitch,, Limelight CDN, Akamai, Dacast and other services via supported protocols.

Limited support for UVC via USB OTG, learn more:

Check more docs, tutorials and videos:

Want to create your own app based on Larix Broadcaster? Buy Larix SDK:
Updated on
Nov 25, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted
1.07K reviews
eric klein
August 30, 2022
Very cool app, worked great. I have a question: Via this app is it possible to CAPTURE a RTMP signal from another device (say a GoPro) and then output it as SRT to the internet? This app is amazing for phone streaming, but my phone's stabilization is bad compared to a GoPro, so I'm trying to get the GoPro working as nice as a broadcast straight from Larix. Thanks! Edit: Another really useful feature would be to show the real-time bitrate usage of the app in the notification bar.
5 people found this review helpful
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Softvelum LLC
July 11, 2022
We have that in our roadmap for later versions, but we don't have any ETA for it unfortunately.
David Remelts
June 2, 2020
I've used this now for a few weeks to stream our church service and have gotten positive feedback from people who have tuned in to the livestream. The only thing I would like to see is some indication of whether it is using the external mic or the built-in mic. I am feeding the sound to my phone from an aux port on our sound board and my Pixel 3a does not always detect the line plugged into the headphone jack as a microphone. So, the only way to tell is by monitoring the livestream on a separate device to see what it sounds like. It would be nice if there was some way to indicate which mic was being used for the audio. Or, a setting that forced it to use ONLY the external mic (rather than use external mic if available). Then, if I am not getting any sound level indication on the screen, I would know that it is not detecting the external mic. Thanks for the great app!
22 people found this review helpful
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Softvelum LLC
June 2, 2020
Thank you for the review! Regarding the source - please go to Settings -> Audio menu and play around with Audio source parameter. Some external devices may also need higher Sample rate (like 48000) so that's another thing to try in case of issues.
James Jackson
August 8, 2020
By far the best way to stream out video and audio from the phone via RTMP or any other transport. I have only one wish... I wish it could detect and use my USB HDMI interface. Giving this app the ability to switch between all my cameras including the USB would make it quite possibly the best camera app on the market... Also giving it screen capture abilities would be nice but not as high a priority for me.
11 people found this review helpful
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Softvelum LLC
August 8, 2020
James, thanks for your feedback. The screen capture is available in our Larix Screencaster app, pleas try it. As for USB OTG - we'll be working on further improvements.

What's new

~ Multi-camera capture improvements
~ Handle zoom in/out keys
~ Bypass video resolution validation ("Advanced options" -> "Allow all camera resolutions")

Demo NDI®|HX2 support:
~ Streaming via NDI®|HX2 + preview stream
~ Stream is limited to 5 minutes for trial purposes
~ Discovery Server, config JSON to add params like VendorID
~ Handle zoom from NDI Studio Monitor