From answers.com: Post production: A final stage in the production of a film or a television program, occurring after the action has been filmed or videotaped and typically involving editing and the addition of soundtracks.
For RevisionBox post production includes editing, adding graphics, adding sounds where appropriate etc. For the record, it can be surprisingly difficult to get hexagons, dice and triangles to look just right on a video!!! The whole process is extremely time consuming, especially for the initial episodes of each course. It is, however, a necessary ingredient in producing high quality video lessons.
Thankfully we are nearing the end of post production and gearing up for launch. We are in the process of finalising dates for launch and will post them here as soon as possible.