Looking for the video roll Riot uses for cosplayers at conventions...

Hello everybody, 1st time posting. I am looking for the background video that riot plays at events, like pax east. I do cosplay but am very shy and awkward out of costume, so I don't actually have any photos for myself of my Nautilus cosplay I did. There is a clip of me, even though its like 1 second, standing in my cosplay and was really hoping to see it. IDK if a riot employee would be able to steer me in the right direction. I think this was in 2015, but they re-used the same video for a couple years they went to pax east. Any help is appreciated. Thank you!