It could be an asset pack for 3D software (like Blender or Maya) containing 28 different models.

Currently, there are no reputable news reports, widely recognized public stories, or indexed internet content explaining the specific origin, content, or context of a file named "Brima Models (28) mp4".

It could be part of a curated collection of video clips.

To help me find the right information for you, could you please clarify where you heard about this file or what type of "models" (e.g., fashion, 3D, digital) it refers to?