Ncis.los.angeles.s08e08.hdtv.x264-lol[ettv]

: Indicates the source of the recording was a High-Definition television broadcast.

: The name of the "release group" that captured and encoded this specific version. NCIS.Los.Angeles.S08E08.HDTV.x264-LOL[ettv]

: A common tag for a distribution site or uploader where the file was originally hosted. : Indicates the source of the recording was

The specific string in your query is a release "tag" used in digital file sharing. Here is what each part means: : The name of the television series. S08E08 : Denotes Season 8, Episode 8. NCIS.Los.Angeles.S08E08.HDTV.x264-LOL[ettv]