Use a versatile player like VLC Media Player or Elmedia Player , which natively handle MKV headers and multiple tracks.
backup : Indicates this is a redundant copy of a primary file, used for data safety or version control. prbackup ep 160.mkv
If this is a printer configuration backup (less likely for an .mkv, but possible in IT environments using the "prbackup" prefix), it would typically be managed via command-line tools like PrintBRM . Use a versatile player like VLC Media Player
It can store multiple audio streams (e.g., Director's commentary, raw audio, and a final mix) and subtitle tracks in a single file. Premiere (Adobe Premiere project files)
pr : Often shorthand for , Premiere (Adobe Premiere project files), or Public Relations .