"Girls Forever" is used in various fan-created storylines, such as the Equestria Girls Forever series related to My Little Pony or "Chicken Girls Forever". The suffix "1742" might represent a specific episode number or a frame count in a production archive.
The .mp4 extension indicates the file is a multimedia container. It is the most universal format for video today because it: Compresses high-definition video into small file sizes. Girls Forever (1742) mp4
multiple data streams, including video, audio, subtitles, and still images. "Girls Forever" is used in various fan-created storylines,
Based on common associations with the components of the title, here are the most likely origins for such a file: Girls Forever (1742) mp4