# wl-webrtc

Wayland screen capture and encoding tool.

## Prerequisites

- **Rust toolchain** (1.70+): `rustup default stable`
- **FFmpeg 6.0+** dev libraries with VAAPI support:
  - Arch: `pacman -S ffmpeg`
  - Ubuntu/Debian: `apt install libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libva-dev`
  - Fedora: `dnf install ffmpeg-devel libva-devel`
- **Wayland** dev libraries:
  - Arch: `pacman -S wayland-protocols`
  - Ubuntu/Debian: `apt install libwayland-dev wayland-protocols`
  - Fedora: `dnf install wayland-devel wayland-protocols-devel`
- **DRM** dev libraries:
  - Arch: `pacman -S libdrm`
  - Ubuntu/Debian: `apt install libdrm-dev`
  - Fedora: `dnf install libdrm-devel`

## Build

```bash
cargo build --release
```

## Run

```bash
# Basic capture to file
wl-webrtc --output output.mp4

# With custom FPS and bitrate
wl-webrtc --output output.mp4 --fps 60 --bitrate 8000000

# Specify DRM device for hardware encoding
wl-webrtc --output output.mp4 --drm-device /dev/dri/renderD128

# Verbose mode
wl-webrtc --output output.mp4 -v
```

## CLI Arguments

| Argument | Default | Description |
|---|---|---|
| `-o`, `--output` | (required) | Output file path (e.g., output.mp4) |
| `--output-name` | auto | Wayland output name to capture |
| `--fps` | 30 | Target frames per second |
| `--codec` | h264 | Video codec (h264 only for MVP) |
| `--hw-accel` | vaapi | Hardware acceleration method |
| `--drm-device` | auto | DRM render device path |
| `--bitrate` | auto | Target bitrate in bps |
| `--gop-size` | auto | Group of Pictures size |
| `-v`, `--verbose` | false | Enable verbose logging |
| `--port` | 0 | WebTransport server port (unused in MVP) |