The Dreckly Fish boys were there in force - hardy souls that they are!
As a reminder for all you videographers out there using mobile phones to shoot video - always hold the phone on its side ('landscape format') so as to avoid the above effect which is know in the trade as 'letterboxing'! Some apps like Google's 'Capture' will by default automatically film in landscape to prevent those black boxes appearing either side of the video on playback.