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).

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 filename is a standard timestamped file generated by recording software, most commonly OBS Studio (Open Broadcaster Software) . It is the default format for OBS because