The FFmpeg binaries are not included in the repository due to size constraints.

resources/ffmpeg/
├── NOTICE.txt
├── SOURCE_OFFER.txt
├── ffmpeg_license.txt
├── README.md
├── win/
│   ├── x64/
│   │   └── ffmpeg.exe
│   └── arm64/
│       └── ffmpeg.exe
├── mac/
│   ├── x64/
│   │   └── ffmpeg
│   └── arm64/
│       └── ffmpeg
└── linux/
    ├── x64/
    │   └── ffmpeg
    └── arm64/
        └── ffmpeg

• Use GPL builds (not LGPL) if you need x264/x265 support
• Use static builds (not shared) for easier bundling
• Ensure binaries have execute permissions on macOS/Linux (chmod +x)
• ffprobe is NOT required — ROSI only uses ffmpeg
• Verify binaries before a build with npm run ffmpeg:check:all