: This version includes footage added back in by Ridley Scott in 2003 (though he famously considers the 1979 theatrical version his preferred cut).
This stands for Digital Theater Systems, indicating that the file contains a premium, high-bitrate multi-channel audio track for an immersive home theater experience. alien1979directorscut1080pblurayx264dtswikimkv top
: This specifies the video codec . H.264 is one of the most widely used video compression standards in the world, and x264 is a powerful, open-source software library for encoding video into this format. In practice, using x264 means the video from the Blu-ray has been re-encoded to a much smaller file size while maintaining exceptional visual quality. For a film as dark and visually textured as Alien , a high-quality x264 encode is crucial to preserve the deep blacks and subtle gradients that make H.R. Giger's work so haunting. : This version includes footage added back in