: A lightweight alternative often used for high-quality playback, available via GitHub . 2. How to Edit or Trim It

It looks like is a specific filename, likely generated by a screen recording or streaming software like OBS Studio or ShadowPlay , which use date and time stamps (Year-Month-Day Hour-Minute-Second) for names.

If this is a long recording and you only need a specific clip:

: This is the most reliable tool for opening .mkv files. You can download it at VideoLAN .

: A professional-grade free editor if you want to add effects or color grading, available at Blackmagic Design . 3. How to Convert It