Store debug info (motion boxes, etc) for recorded clips?

[ireuben]

Would it be useful to be able to view debug info for any previously recorded clip, so you can play a clip and see what exactly triggered the motion, etc in that clip? Seems like that could potentially be stored in the db, and drawn while playing back the clip.

[blakeblackshear]

This will be done by rerunning recorded footage through processing as described here: #1914