Official Blu-ray releases often feature DTS-HD Master Audio 7.1 .
The phrase "Alien Covenant 1080p Dual Audio WORK" appears to be a specific title or file name for a digital copy of the 2017 film Alien: Covenant In this context, the terms break down as follows: : Refers to a high-definition video resolution of Dual Audio Alien Covenant 1080p Dual Audio WORK
The "Dual Audio" request is usually from international fans. Alien: Covenant has incredibly dense dialogue (Michael Fassbender playing two androids, Walter and David) that can be hard to follow in a non-native tongue. Official Blu-ray releases often feature DTS-HD Master Audio