: This is a universal container format that can hold unlimited video, audio, picture, or subtitle tracks in one file. It is commonly used for high-definition video backups because it supports high-quality codecs and multiple language tracks.

: If you need to play it on a device that doesn't support MKV, you can use tools to convert it to MP4.

While "prbackup" isn't a widely recognized official series name, it is frequently used by individuals or automated systems for:

: "Ep 107" generally indicates this is the 107th episode of a show. Common Contexts

: If you have used tools like the NoteBurner Amazon Video Downloader or similar software to save content for offline viewing, the files may be named using these shorthand codes. How to Use This File