Turn your favorite videos into beautiful animated desktop wallpapers.
- 🎬 Video wallpapers — use your own videos as animated wallpapers
- 🖥️ Automatic screen adaptation — videos are transcoded to the current screen resolution
- ⚡ Hardware decoding — uses D3D11VA when supported by the video codec/GPU
- 🔄 Seamless looping — wallpapers automatically restart when the video reaches the end
- 🗂️ Wallpaper library — keep multiple wallpapers and switch between them
- ➕ Easy importing — add videos directly from the GUI
- ❌ Wallpaper management — remove wallpapers you no longer need
- 🖱️ System tray support — close the window without actually stopping the application
- 🚀 Autostart support — restore the last selected wallpaper on application startup
- 🔒 Single-instance protection — launching the application twice brings the existing instance to the foreground
- 🧵 Multithreaded playback — video decoding and wallpaper playback run independently from the UI
- 🎯 Frame timing — frames are rendered according to their presentation timestamps for smoother playback
LWallpaper combines several technologies to provide smooth video playback directly on the Windows desktop.
| Technology | Purpose |
|---|---|
| C++ | Core application logic |
| Qt Widgets | Graphical user interface |
| SDL3 | Rendering video frames |
| FFmpeg | Video decoding and transcoding |
| Win32 API | Windows desktop integration |
| D3D11VA | Optional hardware-accelerated video decoding |
The application uses FFmpeg's format, codec and scaling APIs for decoding and pixel-format conversion.
SDL3 is used to create the rendering window and display YUV video frames.
The GUI currently allows importing:
.mp4.mkv.webm.avi
The selected video is processed before being added to the wallpaper library. :contentReference[oaicite:4]{index=4}
During processing, the video is converted to the current physical screen resolution and encoded using H.264 with YUV420P output.