MOBILE SUIT GUNDAM series are still favored by various generations [and] passed its 35th anniversary. The animators who played the core roles in the memorable first series MOBILE SUIT GUNDAM are Yoshikazu Yasuhiko [and] Ichiro Itano. We would like to leave the key animations [of] the film production to posterity to praise their achievements, which influenced not only the audience but also the current anime industry.
Source: Japan Animator Expo
This short was part of a project named Japan Animator Expo (in Japanese: 日本アニメ（ーター）見本市 or Nihon Animētā Mihon'ichi). The project featured different short films by various directors, which were then released online. This one actually isn't really a short movie, but more of a slide show. It is showing scenes from the first Gundam series', Mobile Suit Gundam, on one side, while you see the corresponding Animation Key Frame on the other. The frames were drawn by Yasukiho Yoshikazu, who was the character designer of the series, and Ichirō Itano, who did animation work (and was / is a very influential figure regarding animation in Anime). The idea was to honor their work with the short, since Gundam itself changed and influenced the Anime industry tremendously. I don't know if it really succeeds with this, since it is only 8-minutes long. Still, I found it interesting to see some of the keyframes and the later conversion into the final product. It remains an average slide-show though. The product itself is by no means a real short movie, for there is no movie; you could probably sort it into the category "interesting-to-see-but-you-don't-have-to". At the end of the day, it'll only really appeal to people who either watched (and liked) the first Gundam series or those, who are intrigued by animation and the process behind it.