13742-br1080p-subs-underwraps.mp4 -

: Indicates that the file includes subtitles . These are often "hardcoded" (burned into the image) or "muxed" (selectable) within the MP4 container.

: Short for Blu-ray . This tells the user that the source of the video was a high-quality physical disc rather than a television broadcast (HDTV) or a web stream (WebRip). 13742-BR1080p-SUBS-UNDERWRAPS.mp4

In the world of digital media, a file name acts as a detailed metadata tag. : Indicates that the file includes subtitles