LM-Monitor
NDI® & SRT video monitor
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
LM-Monitor is a live video monitor for iPhone that receives two professional broadcast protocols: NDI® and SRT.
Use it to confirm video and audio arrival on set, in the control room, or during streaming rehearsals — without firing up a laptop or a dedicated monitor.
Highlights:
- Automatic discovery of NDI® sources on the local network, one tap to full-screen preview
- Distraction-free black-background monitoring with a toggleable source-name overlay
- SRT receive in Caller, Listener, and Rendezvous mode
- Passphrase, Stream ID, latency, and I-frame interval are all configurable
- Simultaneous AAC audio with mute toggle
- Protocol picker on launch — pick NDI® or SRT for the current job
- Built-in "Licenses" screen that lists every third-party component (HaishinKit.swift, libsrt, NDI® SDK) and its attribution
Use cases:
- Verifying that a camera or switcher feed has actually reached the venue or the cloud
- Mixed NDI® + SRT environments where one device should cover both
- Validating NDI® Bridge or contribution feeds traveling over the public internet
- Multi-camera rehearsal checks before doors open
LM-Monitor is an NDI® compatible application. NDI® is a registered trademark of Vizrt NDI AB. SRT is a protocol created, open-sourced, and maintained by Haivision Systems Inc. SRT support is implemented using HaishinKit.swift (BSD-3-Clause) and libsrt (Mozilla Public License 2.0). See the in-app "Licenses" screen for full attribution and source links.
Ratings & Reviews
- Video keeps the correct aspect ratio when the device is rotated
- Fixed a crash that could occur when going back from the NDI source list
- Fixed audio continuing to play after leaving the SRT player while connecting
- Receiving now pauses in the background and resumes automatically when you return
- Fixed memory growth after repeated reconnections
- Music from other apps is no longer stopped while the monitor's audio is muted
The developer, LiveMedia Corporation, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LiveMedia Corporation
- Size
- 7.5 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 LiveMedia Corporation All rights reserved.