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
The format is a "container" that can hold multiple video, audio, and subtitle tracks in a single file. 2023-02-05 17-45-58.mkv
It is the default format for OBS because it is crash-resistant . If your computer loses power or the software crashes during recording, the file remains readable up to the second the crash occurred. (In contrast, MP4 files often become corrupted and unusable if not finished properly). Given the timestamp and format, this is likely