The popularity of videos is often measured by metrics such as:

Cinema is horizontal (1.85:1 or 2.39:1). Popular video is vertical (9:16). This geometric shift has profound filmographic consequences:

Create two lists:

One cannot discuss popular video without analyzing the "A/B roll" technique prevalent in commentary YouTube (e.g., Hbomberguy, Jenny Nicholson). Here, filmography is split: