The file was likely created on . This naming convention is commonly used by: OBS Studio: Default format for screen recordings.
To guide you with the file , it is first helpful to understand that this name is a standard timestamp ( YYYY-MM-DD HH-MM-SS ) typically generated by recording or ripping software.
The .mkv (Matroska) format is a "container" that can hold high-quality video, multiple audio tracks, and subtitles in one file. It is not natively supported by some default players like QuickTime on Mac.
Often uses this format when ripping titles from a DVD or Blu-ray.