Quality issues aside, there are also content differences between official releases.

The GOUT is the only official home video release with the original theatrical crawl and flyover for Star Wars. All other releases feature the revised 1981 crawl and flyover, the one where the musical cue for Tatooine’s arrival is about two seconds off.

Each home video release also uses the latest audio revision, which at least for Star Wars and Empire, includes content differences. A sound effect is missing on all Empire releases using the 1993 audio, and pre-1985 Star Wars releases are the only ones with theatrical audio.