Researchers GES and S-EB reviewed each video trial (regardless ofcitizen scientists’ reports to the daily survey) using video-viewing soft-ware (e.g., Windows Media Player), indicating at what timestamp theparticipating cat sat on/in or near a stimulus over the course of the trial.Cats were considered “participant” if they sat or stood within the con-tours of a stimulus with all limbs for at least three seconds.
This part of the article is difficult to understand, I think I would need more context about what relevance the type of software used has to see why this detail was included.