Trivia / Johnny Corncob

• Better Export for You: The 4K remastered Blu-ray version was sold in the United States, United Kingdom and Germany, but not in its home of Hungary, where the film only got a lower quality DVD release. However, the remaster is at least occasionally shown on Hungarian HD television stations.
• Creator Breakdown: The pains of the film's production prompted Jankovics to create his Oscar-nominated short Sisyphus, to vent his frustration and exhaustion.
• No Export for You: Hanna-Barbera actually picked up exclusive distribution rights for the U.S., only to shelve the film indefinitely. The director was convinced that the American studio only bought up the rights to keep the movie out of circulation and so decrease the competition of their own productions. Italy was the only Western market to release the movie, and even the Soviet bloc almost refused to showcase it on account of its heavy nationalism. It was after this fiasco that the director said "screw it" to the notion of appealing to foreign markets. In late 2020, the film's 4K remaster was finally released to American viewers via online video-on-demand services (including The Criterion Channel), followed by a Blu-ray as a bonus film included with Son of the White Horse that came out in the U.S. and Germany in 2021, then in the U.K. in 2022.
• What Could Have Been:
  • The initial candidate for the first ever Hungarian feature animation was, of all things, a compilation of Gustavus shorts. Another idea involved a new movie about Gustav traveling through motion picture history. As progress was slow and the 150th anniversary of 19th century poet Sándor Petőfi's birth was fast approaching, it was decided that his most famous epic would be adapted instead.
  • Graphical designer and animation director Attila Dargay (known among others for Vuk the Little Fox, Lúdas Matyi, Az Erdő Kapitánya, Dragon and Slipper or The Seventh Brother) submitted potential character designs in his more "traditionally cartoony" style, though the filmmakers decided to take notes from Yellow Submarine instead.
  • As mentioned above, an American release was once a possibility, but apparently Hanna-Barbera only ever made use of the film's acquisition to recut it into a couple of music videos as part of their Hanna-Barbera Presents HBTV series.