ating ▁those ▁additional ▁err ata ▁was ▁approved ▁on ▁October ▁ 1 0 , ▁ 2 0 1 2 . ▁D CI ▁approved ▁D CI ▁Spec ification ▁Version ▁ 1 . 3 ▁on ▁June ▁ 2 7 , ▁ 2 0 1 8 , ▁integr ating ▁the ▁ 4 5 ▁err ata ▁issued ▁to ▁the ▁previous ▁version ▁into ▁a ▁new ▁document . ▁ ▁The ▁previous ▁versions ▁are ▁also ▁arch ived ▁on ▁the ▁D CI ▁web ▁site . ▁ ▁Based ▁on ▁many ▁S MP TE ▁and ▁ISO ▁standards , ▁such ▁as ▁J PE G ▁ 2 0 0 0 - com pressed ▁image ▁and ▁" bro ad cast ▁wave " ▁PC M / W AV ▁sound , ▁it ▁explains ▁the ▁route ▁to ▁create ▁an ▁entire ▁Digital ▁Cinema ▁Package ▁( D CP ) ▁from ▁a ▁raw ▁collection ▁of ▁files ▁known ▁as ▁the ▁Digital ▁Cinema ▁Distribution ▁Master ▁( D CD M ), ▁as ▁well ▁as ▁the ▁specific s ▁of ▁its ▁content ▁protection , ▁encryption , ▁and ▁for ens ic ▁mark ing . ▁ ▁The ▁specification ▁also ▁establish es ▁standards ▁for ▁the ▁dec oder ▁requirements ▁and ▁the ▁presentation ▁environment ▁itself , ▁such ▁as ▁ambient ▁light ▁levels , ▁pixel ▁aspect ▁and ▁shape , ▁image ▁l umin ance , ▁white ▁point ▁chrom atic ity , ▁and ▁those ▁toler ances ▁to ▁be ▁kept . ▁ ▁Even ▁though ▁it ▁spec ifies ▁what ▁kind ▁of ▁information ▁is ▁required , ▁the ▁D CI ▁Spec ification ▁does ▁not ▁include ▁specific ▁information ▁about ▁how ▁data ▁within ▁a ▁distribution ▁package ▁is ▁to ▁be ▁formatted . ▁Form atting