: Refers to the video resolution (Standard Definition). It means the video has 480 horizontal lines of vertical resolution.
This naming convention breaks down into the following technical specifications: : Refers to the video resolution (Standard Definition)
Based on the year and acronym, the file most likely refers to the horror film : Release Date: February 3, 2017. Director: F. Javier Gutiérrez. Genre: Supernatural Horror. : Refers to the video resolution (Standard Definition)