Given the timestamp and format, this is likely a screen recording , a gameplay capture , or a webcam stream saved locally to your computer. How to use this file
If your editing software doesn't accept MKV, you can go to OBS Studio and select File > Remux Recordings to quickly turn it into an MP4 file. 2023-02-05 17-45-58.mkv
The format is a "container" that can hold multiple video, audio, and subtitle tracks in a single file. Given the timestamp and format, this is likely