Screenshots are compressed and tonemapped for web viewing. Actual video quality is higher.

Important: This is an HDR release. An HDR display is recommended for viewing, alternatively it can be watched on SDR displays with video players that support HDR to SDR tonemapping. The video player MPV is recommended for either case.

Release Name:
Alien.Theatrical.Cut.1979.2160p.UHD.HDR.AV1.Opus.Multi6-dAV1nci

Title: Alien
IMDB: https://www.imdb.com/title/tt0078748/
Runtime: 01:56:37
Size: 8679 MB

Alien - Theatrical Cut (1979) [8.5 GB]

Video:
~8700 kbps AV1 - 3840x1600

Audio:
~255 kbps Opus - English 5.1
~255 kbps Opus - Spanish 5.1
~240 kbps Opus - Spanish 5.1
~240 kbps Opus - French 5.1
~245 kbps Opus - German 5.1
~280 kbps Opus - Italian 5.1

Subtitles:
19x PGS - English (SDH), English (Commentary - Director, Producer, Cast), English (Commentary - Ridley Scott), Spanish 1, Spanish 2, Spanish (Forced), French, French (Forced), German, German (Forced), Italian, Italian (Forced), Finnish, Danish, Dutch, Norwegian, Swedish, Korean, Polish

Source: UHD BD
Compatibility: 4K AV1 and Opus 7.1 playback. Recommended players for Windows/Android: VLC or MPV.
Note: The two Spanish tracks are probably Castilian and Latin American respectively, but as I don't speak the language I don't know which one is which.

About AV1: AV1 is a free modern video format developed by the Alliance for Open Media (AOM). It delivers high quality video at lower bitrates than h264 or even h265/HEVC. Unlike HEVC, it can be streamed in common web browsers. It is being adopted by YouTube and Netflix, amongst others.