If the video won't play, it may be a "broken" recording (common if OBS crashed during the 3:37 AM session). You can try using Untrunc or FFmpeg to repair the header.
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 2021-08-07 03-37-54.mkv
Are you trying to from this date, or did you find this file in a specific archive or community folder ? If the video won't play, it may be