ARP is a local GUI app for remastering public-domain or properly licensed film material with ComfyUI-powered AI tools.
It is built around an old-film workflow: choose source material, optionally clean archive damage, outpaint it to a wider aspect ratio, detect shots, generate color reference stills, colorize the video from those references, and finally recomposite the result so the original center footage stays as faithful as possible.
The app is still alpha software, but the goal is simple: you should be able to run the whole remaster from the GUI, then inspect and adjust each stage when the AI needs a little human steering.
ARP AI Remaster Pipeline: Remastering The Hound of the Baskervilles in 4K
The **ARP AI Remaster Pipeline** is a free, open-source GitHub project created by David Addis for applying AI-based restoration techniques to classic movies, including widescreen expansion and colorization.
A practical example of ARP is the experimental **4K remaster of the 1939 film *The Hound of the Baskervilles***, demonstrating how modern AI can transform archival movie footage.
The original movie footage was processed with ARP to expand the visual presentation into a wider format, add color, and upscale the material toward 4K resolution.
Instead of simply enlarging every frame, the pipeline uses AI-based processing to reconstruct and enhance visual information during the remastering process.
The colorization stage gives the black-and-white film a modern appearance while retaining the original scenes, actors, compositions, and cinematic structure.
The widescreen expansion demonstrates how AI outpainting techniques can generate additional visual areas beyond the original frame.
After the visual processing, the project also included a separate audio restoration and stereo redesign, producing a more complete modern presentation of the classic film.
The result shows how freely available AI models and open-source software can now be combined to experiment with restoration workflows that previously required expensive professional equipment.
ARP is particularly interesting because its workflow can be adapted to other public-domain, archival, and historically significant video projects rather than being limited to a single movie.
The *Hound of the Baskervilles* experiment ultimately demonstrates the potential of **AI remastering, colorization, widescreen expansion, and 4K upscaling** when they are combined into a single reproducible pipeline.
Here is the best example of Remastered Movie using ARP
