If you found this file on your computer or a shared drive, it is most likely:
OBS Studio defaults to this naming convention ( YYYY-MM-DD HH-MM-SS.mkv ). This specific file would represent a session recorded in the early morning hours of August 7, 2021. 2021-08-07 03-37-54.mkv
Files shared on these platforms often retain their original system-generated filenames if they aren't renamed by the uploader. How to "Develop" the Content If you found this file on your computer
The filename appears to be a default timestamp-based name typically generated by recording software like OBS Studio , ShadowPlay , or security camera systems . or security camera systems .