Introduction
The role of Video Designer is to create a video and work with the appropriate people to get that video to reliably play during a show.
Tips
The context of a video varies wildly depending on the show in question, but here is some general advice that may be applicable.
Filming
If the video requires actors in costume, coordinate with the costume designer as soon as possible to figure out when to film those.
Editing
The MIT New Media Center (26-139) has computers with the entire Adobe video suite (Premiere, After Effects, etc.) as well as the entire Final Cut suite. It's accessible any time so long as you're an MIT student.
Controlling Video
Video is generally cued from booth - work with the people who will be in booth to figure out a control system that works for them.
Avoid wireless control if at all possible. HDMI cables can carry a combination video-audio signal reliably up to ~50 feet, and as awkward as it may seem to gaff a cable all the way to booth, it's preferable to the uncertainty of wireless control. Many modern computer monitors include an audio port that outputs the audio channel from the HDMI input, so speakers can be connected directly to those.
If wireless video control is absolutely necessary, it's worth noting that bluetooth has proved more reliable than wifi. The "Unified Remote" app provides a nice free interface for