How to colorise black and white movies?
Convert movie to pictures (1 second = 24 pictures ; so 1 hour = 86,400 pictures ; average 90 min. movie = 129,600 pictures). Colorize every individual picture using the DeepLearning API which gives decent results comparable to the hand-colorized movies of the late 20th century. The Solomon Society uses this to convert old newsreel footage and other curiosities with impressive results.
It sounds like a lot of work, and it is (actually the work is simple but repetitive &amp; massive), but a modern PC with an upper class video card, maximal RAM and a ton of free disk space should be able to pull it off fine given some time.