In the context of the internet, strings like this are frequently found in:

This is the primary identifier of the content series or specific video.

Often used by automated systems or collectors to denote the sequence in a series or a specific entry within a larger database (such as a CMS or gallery system).

"Girls Forever (1079) mp4" serves as a digital fingerprint for a specific piece of media. While the exact visual content depends on the source library, the nomenclature suggests it is part of a large, serialized collection.

Technical entries used by web crawlers to index media content across various servers.