This is typically a "release group" or encoder tag. These groups are the architects behind the file, responsible for taking raw or high-definition footage and compressing it into a shareable size while maintaining the best possible quality.
This signifies Dual Audio . These files usually contain two separate audio tracks—for example, the original language (like Japanese or English) and a dubbed version (like Hindi or Spanish). You can toggle between these in your player's settings. dshft-480p-dual-mkv
Every part of a filename like "dshft-480p-dual-mkv" provides a specific detail about the media: This is typically a "release group" or encoder tag