VideoProperty not working

[benfrancis]

STR:

• Add virtual VideoCamera Thing
• Navigate to detail view
• Try to watch video

Expected:

• Can watch video

Actual:

• Video not playable

I haven't tested this with real video camera hardware recently.

I've noticed that the video property affordance looks wrong in the Thing Description. At least one of the two forms should have a video content type but instead one has sse as a subprotocol (which is not useful for a video stream).

This could potentially be a regression from the implementation of the HTTP SSE Profile, or possibly just a bug in the Virtual Things add-on.