This one had me stumped, since despite being nearly as bright as Venus appears later in the video, it's traveling from south to north, negating the possibility of a celestial object. However, the object appears on the water, well below the horizon. Chances are, this is the light of a passing boat, of which would be consistant with the object's speed.
Otherwise, this is one damn impressive video, in terms of the weather shots it's captured. CFHT camera site: http://tinyurl.com/4676hyb