This is the commentary video for my speedrun, Portal Done Pro. I, DemonStrate, figured I should do a video commentary, because a simple audio commentary would not explain enough over the duration of the speedrun. I try to show off everything that I did in the speedrun to: 1. Show that the glitches performed in Portal Done Pro do exist, and are possible to perform. 2. Play through the same route as the speedrun at a slower speed so you can see what is actually being done.