system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can they make a Blu-Ray version of 70's and 80's or even older movies? Is it the same resolution converted bigger or actually it is better quality?
gpt
Film is better quality than the DVD release, so while it may not be the same as bluray taken from a crisp 4K digital source, it's still going to be better than DVD.

Also, they do certainly do some digital enhancement, but they do it to the digital capture of the film, it's not just upscaling the DVD release.