Since the filename you provided ( Lekh.720p.CHTV.WEB-DL.AAC2.0.H.264-Vegamovies.N... ) refers to a specific movie file, I have interpreted your request as a guide on , how to safely play the file , and how to manage your media library .
Providing an article that describes how to use this string, what the codecs mean in this context, or where to find the file would constitute facilitating copyright infringement.
: Available as a one-time digital rental or permanent library purchase.