1_5044358395306443431mp4

: The file is brought in as one unified layer rather than multiple editable components.

: The .mp4 extension confirms this is a compressed video container, which by nature is a single, non-layered file. 1_5044358395306443431mp4

Are you trying to this specific file into an editing program, or did you receive it as a final export ? After Effects Tutorial - Importing Basics : The file is brought in as one