: Short for "Download Mux," meaning the audio and video were taken from different sources and combined.
: Likely the Italian title abbreviation or the network it aired on in that region. ITA : Indicates the audio or subtitles are in Italian . NCIS.Hawaii.1x18.TNT.ITA.DLMux.x264-UBi.mkv.mp4
If you are looking for a "piece" of information regarding the file name you shared: : Refers to Season 1, Episode 18. : Short for "Download Mux," meaning the audio