Just updated this at the Terry talks website.
“We’ve noticed that we’ve had quite a few queries on the video part of the application- i.e. having difficulty getting access to a camera, a little intimidated with the whole video thing, etc. This is just a note to say that the video is primarily requested to give us a sense that you’re reasonably capable of speaking. As well, the video quality achieved using something like a webcam or the camera on your laptop is plenty good. Anyway, note that we’ve extended the deadline a bit so that you still have a chance to do this.”
Anyway, the deadline is now Oct 14th.