2021-08-07 03-37-54.mkv -

If the video won't play, it may be a "broken" recording (common if OBS crashed during the 3:37 AM session). You can try using Untrunc or FFmpeg to repair the header.

.mkv (Matroska Video), a container often used for high-quality recordings, multiple audio tracks, or subtitle streams. Likely Origins 2021-08-07 03-37-54.mkv

Use a tool like MediaInfo to see the technical metadata (resolution, frame rate, and what software encoded it). If the video won't play, it may be