The Canadian system has an obscure loophole concerning multimedia: if a copyrighted image is modified in any way, shape or form, or is combined with other copyrighted images, it is legally considered a "piece of art" and therefore said artist is not eligible to be sued for copyright infringement.
This was meant to legalize "contemporary" art which sometimes uses copyrighted images to express opinions, and luckily for Canuck TAers, changing ANYTHING in our TA vids (even something like quality or framerate) legally makes the clip a piece of art (albeit a moving piece of art).