▁all ▁data ▁for ▁the ▁DVD - Video ; ▁it ▁is ▁also ▁known ▁as ▁a ▁Video ▁Title ▁S ets ▁directory . ▁This ▁directory ▁is ▁required ▁to ▁be ▁present ▁on ▁a ▁DVD - comp li ant ▁disc . ▁ ▁Video ▁Manager ▁( VM G ) ▁files : ▁ ▁V IDE O _ TS . I FO ▁file : ▁the ▁Video ▁Manager ▁( VM G ) ▁information ▁file — st ores ▁control ▁and ▁play back ▁information ▁for ▁the ▁entire ▁DVD — e . g . ▁the ▁First ▁Play ▁P GC ▁( Program ▁Ch ain ), ▁locations ▁of ▁all ▁Video ▁Title ▁S ets ▁( V TS ), ▁table ▁of ▁titles , ▁number ▁of ▁volumes , ▁domains ▁for ▁multiple ▁languages ▁and ▁regional ▁and ▁parent al ▁control ▁settings , ▁information ▁about ▁subt it les , ▁audio ▁tracks , ▁etc . ▁This ▁file ▁is ▁required ▁to ▁be ▁present ▁on ▁a ▁DVD - comp li ant ▁disc . ▁ ▁V IDE O _ TS . B UP ▁file : ▁the ▁backup ▁copy ▁of ▁the ▁V IDE O _ TS . I FO ▁file . ▁It ▁is ▁part ▁of ▁Video ▁Manager ▁( VM G ). ▁ ▁V IDE O _ TS . V OB ▁file : ▁the ▁first - play ▁Video ▁Object ▁of ▁the ▁DVD - Video ▁disc , ▁usually ▁a ▁copy right ▁notice ▁or ▁a ▁menu . ▁It ▁is ▁part ▁of ▁Video ▁Manager ▁( VM G ). ▁This ▁file ▁is ▁not ▁required ▁to ▁be ▁present ▁on ▁a ▁DVD - comp li ant ▁disc . ▁ ▁Video ▁Title ▁Set ▁( V TS