Long-lost Charlie Chaplin film meticulously restored after 100 years

Breakthroughs, discoveries, and DIY tips sent every weekday. When classic films undergo 4K restorations, the results can divide fans. Look around Hollywood and you'll find numerous examples of movie rereleases featuring controversial uses of digital noise reduction, motion smoothing, and other post-production tools. Meanwhile, the proliferation of AI- and machine learning-based upscaling programs has only complicated the debate. When approached properly, though, the technique has helped revive some of Hollywood's oldest--and for a long time, inaccessible--movies.