Apaa-396.mp4 -

A localized or internal video file from a course, conference, or private study.

The where you saw this filename (e.g., a university website, YouTube, a research database)? APAA-396.mp4

It is highly likely that is a specific file name for: A localized or internal video file from a

The of the video (e.g., medicine, technology, education)? Any accompanying text ? a university website