Subtitle Superman.1978.720p.bluray.x264.[yts.ag] -

: The theatrical version runs approximately 2 hours and 23 minutes .

The film is the seminal superhero origin story starring Christopher Reeve. subtitle Superman.1978.720p.BluRay.x264.[YTS.AG]

: This is the "release group" tag. YTS (originally YIFY) is a well-known entity in the peer-to-peer file-sharing community, famous for providing movies in very small file sizes that maintain acceptable HD quality for casual viewing. : The theatrical version runs approximately 2 hours

: Refers to the display resolution (1280 x 720 pixels). It is considered "High Definition," though lower than the 1080p or 4K standards often found on modern Blu-rays. subtitle Superman.1978.720p.BluRay.x264.[YTS.AG]

This specific filename identifies the quality and encoding methods used to compress the movie: