YouTube video essays are long-form (relative to many other internet videos) critical videos that make arguments about media and culture. They’re usually meticulously narrated and edited, juxtaposing video footage, images, audio, and text to make an argument much like a writer would do in a traditional essay.
https://ww2.kqed.org/mindshift/2018/02/05/how-to-use-youtube-video-essays-in-the-classroom/