AngelClient

A macOS menu bar app that broadcasts your screen, system audio, and built-in webcam as NDI sources.

Features

• Lives in the macOS menu bar (LSUIElement, no Dock icon)
• Desktop NDI source — full native-resolution screen capture (Retina-aware) + system audio (48 kHz stereo) via ScreenCaptureKit
• Webcam NDI source — built-in camera via AVFoundation
• Start/Stop toggle from the menu bar
• Single-file Objective-C implementation

Requirements

• macOS 13 or newer
• NDI SDK installed with libndi.dylib at /usr/local/lib/
• Xcode command line tools (clang, make)
• On first run, macOS will prompt for Screen Recording, Camera, and Microphone permissions

Build

make

This produces AngelClient.app.

Run

make run
# or:
open AngelClient.app

Click the AC icon in the menu bar and choose Start Broadcasting. Two sources appear on the network: Desktop and Webcam.

Files

• main.m — AppKit menu-bar app, ScreenCaptureKit + AVFoundation capture, NDI send
• ndi_send.h — minimal NDI SDK header (video + audio send)
• Info.plist — bundle metadata + TCC usage descriptions
• Makefile — build rules (compiles binary and assembles .app bundle)