ALH Pro

ALH Pro processes images, video and audio on your own computer. It's for people restoring older footage, enlarging photos or illustrations, and preparing media without uploading their files.

• Image and video upscaling: Enlarge media up to 4x or enhance it at its original size, using waifu2x for illustrations, Real-ESRGAN for photos and video, or Real-CUGAN for anime video.
• Smoother video: RIFE generates intermediate frames, while duplicate-frame removal handles repeated animation frames without changing the video's duration.
• Background removal: Process images in batches with U²-Net, ISNet or BiRefNet, refine subject edges, and export transparent PNGs.
• Audio cleanup and separation: Reduce noise, enhance voices, improve low-sample-rate recordings, and use Demucs to extract vocals or create instrumental tracks.

The app is free and open source under MIT, runs on Windows 10/11 x64, and has a Chinese-language interface. Processing works offline without an account. Files stay local; optional network requests fetch updates, advertising assets and interface notices.

NVIDIA GPUs receive priority optimization. AMD and Intel GPUs can work, though some tasks may fall back to CPU. Image and audio processing can run on CPU alone; video processing requires a usable hardware encoder, and Real-CUGAN requires a GPU. Background removal needs a separate model package unless you choose the complete download.