You tried going to https://www.dentistry.ubc.ca/research/researchers/Richman/Celltracking.highpower.windowsmedia_000.avi, and it doesn't exist. All is not lost! You can search for what you're looking for.
https://www.dentistry.ubc.ca/research/researchers/Richman/Celltracking.highpower.windowsmedia_000.avi