The Hobbit Trilogy -2012 2014- Extended 720p Bluray X264 Dual Audio -eng Dd 5 - 1 Hindi Dd 5 1- 13

The 13 at the end likely refers to a (or part of a release group’s naming convention).

This appears to be a filename for The Hobbit trilogy (2012–2014), specifically the Extended Editions in 720p with dual audio (English + Hindi 5.1 surround). The 13 at the end likely refers to