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: These are likely the names of the "release groups" or the websites that originally uploaded or encoded the file.

The text is a standardized file naming convention typically used for digital media downloads. world4ufree-wiki-tkks-s04-e12-720p-mkv

: This is an abbreviation for the title of the show. In this context, it most likely refers to the Indian television series The Kapil Sharma Show . : These are likely the names of the

: This indicates the High Definition (HD) video resolution ( world4ufree-wiki-tkks-s04-e12-720p-mkv