android-webcam

Use your Android phone as a high-quality, low-latency webcam for meetings and video recording.

Architecture

┌──────────────────────────────┐        Wi-Fi / USB
│   Android App (Kotlin)       │ ──────────────────────► │   Desktop Client (Go)   │
│   Camera2 / CameraX          │   H.264/H.265 over RTP  │   Virtual Camera (V4L2  │
│   Jetpack Compose UI         │   or WebRTC (SRTP)      │   / OBS VirtualCam)     │
└──────────────────────────────┘                         └─────────────────────────┘

Components

Component	Tech stack	Location
Android app	Kotlin, Jetpack Compose, CameraX, MediaCodec	android/
Desktop client	Go, GStreamer bindings, V4L2 loopback (Linux) / DirectShow (Windows)	desktop/

Goals

• Maximum video quality: up to 4K 30fps or 1080p 60fps, H.265 hardware encoding
• Minimum latency: target < 100 ms glass-to-glass over local network
• Transport: WebRTC (preferred, handles NAT, uses SRTP + RTCP) with fallback to raw RTP over UDP
• Audio: AAC or Opus over the same session

Quick Start

See android/README.md and desktop/README.md.

License

Apache 2.0