The name suggests a , likely originating from one of the following scenarios:
: Some media management tools generate temporary .mkv files during library scans or "Deep Analysis" tasks to determine bitrates or chapter markers. prbackup 132.mkv
The Matroska Video ( .mkv ) container is an open-standard format that can hold unlimited tracks of video, audio, and subtitles. If you have this file on your drive, you can use a tool like MediaInfo to see the metadata (codec, date created, and encoding software), which would reveal exactly which program produced it. The name suggests a , likely originating from