# LM-Monitor — NDI® & SRT video monitor

> Live video monitor for NDI® and SRT protocols on iPhone. (iPhone/iPad app by LiveMedia Corporation.)

- Source: https://appshunter.io/ios/app/lm-monitor/id6773993805 (this page in markdown: same URL + `.md`)
- Developer: [LiveMedia Corporation](https://appshunter.io/developer/1541086070)
- Category: Photo & Video, Business
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 16.0 · 7 MB
- Languages: English
- Released: 2026-06-01
- Data updated: 2026-08-23
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/lm-monitor/id6773993805/reviews.md

## What is LM?

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.

## Key features

- NDI® source discovery
- Full-screen preview
- SRT receive modes (Caller, Listener, Rendezvous)
- Configurable SRT parameters
- Simultaneous AAC audio
- Protocol picker on launch


## Frequently asked questions about LM

### What is LM-Monitor?

LM-Monitor is a live video monitoring application for iPhone that supports professional broadcast protocols such as NDI® and SRT. It allows users to confirm video and audio arrival on set or in control rooms.

### Does LM-Monitor support NDI® sources?

Yes, LM-Monitor features automatic discovery of NDI® sources on your local network, allowing for a one-tap transition to a full-screen preview.

### What SRT modes does LM-Monitor support?

LM-Monitor supports SRT receive in Caller, Listener, and Rendezvous modes. It also allows for configuration of passphrase, Stream ID, latency, and I-frame interval.

### Can I monitor audio with LM-Monitor?

Yes, LM-Monitor supports simultaneous AAC audio with a convenient mute toggle. You can ensure your audio is arriving correctly along with your video feed.

### How does LM-Monitor handle different protocols?

Upon launch, LM-Monitor presents a protocol picker, allowing you to select either NDI® or SRT for your current job. This ensures you are set up for the correct feed.

### Is LM-Monitor free to use?

Yes, LM-Monitor is available for free. There are no in-app purchases or subscription fees required to use its core monitoring features.

### Does LM-Monitor have ads?

No, LM-Monitor does not contain advertisements. As a free application, it provides an uninterrupted monitoring experience without any ad interruptions.

### What devices is LM-Monitor compatible with?

LM-Monitor is designed for iPhone devices. It leverages the capabilities of the iPhone to provide a portable and powerful video monitoring solution.

## Version history (last 4 releases)

### 1.3 — 2026-08-12

- 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

### 1.2 — 2026-07-08

Automatic reconnection
If the stream drops, the app now reconnects automatically and resumes playback. An orange "Reconnecting…" indicator is shown while restoring the connection.

Picture in Picture (PiP) support
Keep watching in a floating window while using other apps. You can also start PiP manually from the button on the player screen.

Screen stays awake during playback
The display no longer auto-locks while you are watching a stream, regardless of your device's Auto-Lock setting.

Improved SRT settings screen
Added a "Done" button to dismiss the numeric keyboard, fixing the issue where the Connect button could not be tapped.

### 1.1 — 2026-06-02

What's new in version 1.1:

- SRT receive in Caller, Listener, and Rendezvous mode
- Simultaneous AAC audio with mute toggle
- Protocol picker on the launch screen for NDI® or SRT
- Saved SRT settings (passphrase, Stream ID, latency, I-frame interval)
- New in-app "Licenses" screen consolidating HaishinKit.swift, libsrt, NDI®, and SRT attribution
- Internal audio pipeline stabilization for cleaner live playback

### 1.0 — 2026-06-02

No release notes.

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## More apps by LiveMedia Corporation

- [LM-Cam for OBS studio](https://appshunter.io/ios/app/lm-cam-for-obs-studio/id1541086068)
- [CaME App](https://appshunter.io/ios/app/came-app/id1670304677)

All apps by LiveMedia Corporation: https://appshunter.io/developer/1541086070

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*