MPEG Izixhobo

Guqula MPEG ukuya nokubuya kwiifomathi ezahlukeneyo

Malunga MPEG

I-MPEG (iQela leeNgcali zeMifanekiso eshukumayo) lusapho lwevidiyo kunye neefomati zokucinezela iaudio ezisetyenziswa ngokubanzi ukugcinwa kwevidiyo kunye nokudlala kwakhona.

Iindlela Ezisetyenziswa Ngazo Eziqhelekileyo

Video distribution
Broadcast media
DVD video

MPEG Imibuzo Ebuzwa Rhoqo Ngokuguqula

Yintoni ifayili yevidiyo ye-MPEG?

I-MPEG yindawo yokugcina ividiyo egcina enye okanye ngaphezulu i-video streams, iingoma zesandi, kunye nesihloko esikhethiweyo. Iindawo zokugcina ezahlukeneyo zixhasa ii-codecs ezahlukeneyo, ngoko ukulungelelanisa kuxhomekeke kumqolo ONokubakho ngaphakathi.

Yintoni inkqubo ye-MPEG yokuhamba, kwaye kutheni ifayili yam injalo?

I-multiplex eyenziwe ukuba ikhowudiwe yi-hardware esebenzayo eqinileyo ngexesha elibonakalayo, ayikwazi ukuhlela kwikhompyutha. Iipakethi zesandi nevidiyo zidityanisiwe namaphawu okulinganisa ixesha ukuze ibhokisi esetiweyo ephezulu ingaqala ukudlala ukusuka naphi na kwi-stream, ngaphandle kwesikhokelo kunye nokungagcini phantsi ifayile yonke. Lo yilo luthetha ukuba MPEG imixholo idlala kwizixhobo ezidala ngaphandle kwengxaki kwaye ingqubana nesoftware yakudala rhoqo. Ividiyo yi-MPEG-1 okanye i-MPEG-2 ene MP2 okanye AC-3 yesandi, ephindaphindwa kwi-stream eyenziwe ukuba ikhowudiwe yi-hardware esebenza ngokusisigxina.

Kutheni inkqubo yokusebenza yokusasaza nokubhala ifuna MPEG?

Kuba umbhobho wonke wakhiwa kuwo. Abancedisi abadlalayo, i DVD ebhaliweyo isixhobo kunye nenkqubo yokuthatha inkqubo yacaciswa malunga nale fomati xa yayikhona, nezixhobo ezineminyaka emibini yobomi benkonzo ayikwazi ukucaciswa kwakhona. Iifayile eziphumayo ezinkqubo zifomati yenkqubo eyenziweyo ukuvelisa, hayi ukhetho olunokwenziwa kutsha nje. Iinkqubo ze MPEG ziguqulwa kolunye ulwimi zisebenzisa wonke umdlali we DVD, ibhokisi ebekwe phezulu kunye nomjelo wosasazo owenziwe ngaphambili, kwaye zithobela iimpazamo zebithi ngokulula.

Ingaba i-MPEG ifana nefomati yesinye isiqalelo?

Ewe. Eli xhulumaniso negama elide okanye elifutshane obona ngaphaya kwayo lichaza ifomati enye ephantsi, kwaye nantoni na efunda okanye ifunda zombini. Amagama amabini akwimbali: umda wegama lefayile leimpawu ezisibhozo ukusuka kwi DOS yexesha, umboneleli onika igama lodweliso lwenkqubo endaweni yefomati yefayile, okanye iinkqubo ezimbini eziqhelekileyo ezihlukileyo. Uguqulelo lwesibini luvelisa iziphumo ezifanayo, ngoko sebenzisa naluphi na uxhulumaniso isoftware kwinye icala ilindele.

Kutheni i-browser yam ingadlala ifayili MPEG?

Iibrawuzeri zithutha abacoci boluhlu olufutshane lweefomati, kwaye MPEG ayikho kuyo - ilayisensi, udidi lwe codec ivumela, okanye ubudala bayo bugcina ngaphandle. Ifayile ayilahli kwaye umdlali we desktop uya kuyivula, kodwa akukho nto oyenzayo kwiphepha izakwenza umkhangeli zincwadi uyenze. Ukutshintsha kwi web- native container yindlela ethembekileyo kuphela yokudlala ngaphakathi. I-MPEG-2 ifuna iindidi ezine ukuya kwezisithandathu ze-bitrate ye-H.264 yomfanekiso ofanayo, kwaye imixholo yayo ihlala idityaniswa, ebonakala icocekile kwi-displays yakudala.

Kutheni le nto i-MPEG yevidiyo yam ibonisa imigca ye-comb nantoni na ehambayo?

Kuba idityaniswe. Imixholo kule fomati ihlala ivela kwixesha le-DVD, apho iframe nganye igcinwa njengemihlaba emibini ephakathi- ubude ethathwe njengeshumi elinesixhenxe lemizuzu. Ikhusi eliqhubekekayo libonisa zombini ngaxeshanye, ngoko intshukumo phakathi kweemboniselo ezimbini ibonakala njenge combing ethe tyaba. Ukususa udityaniswe kuguqulelo ludibanisa imihlaba kwiframes ezipheleleyo kwaye i-artefact iphela. I-MPEG apha ithetha i-MPEG-1 okanye i-MPEG-2 inkqubo yokuhamba, ifomati emiselweyo ye Video CD kwaye emva koko ye DVD kunye nokusasazwa kweTV.

Ingaba i MPEG iyadlala kwifowuni okanye kwiTV ngaphandle kokutywina ibhetri?

Iinkqubo zekhompyutha

Ingaba ndimele ndigcine iifayile ezintsha njenge MPEG?

Ukuba into ephantsi kwendlela ifuna oku. Ifomati iyaqhubeka ivula, kwaye akukho mcimbi wokuguqula uvimba ongazibangela iingxaki, kodwa ayikwazi ukuqhubeka apho isixhobo okanye usebenziso luya khona. Kwanoma iyiphi into entsha, ifomati yangoku ayihlawuli nto engaphezulu kwaye ikhusela umjikelo olandelayo wombuzo kwiminyaka emininzi ezayo.

Kutheni uguqula i-MPEG ibe yifomati yevidiyo enye?

Gcina i-MPEG kwi-MP4 xa ufuna ukudlala ngokubanzi - iiseva ze-web, ii-smart TVs kunye nezixhobo zokulungisa iinkqubo zonke zidlala i-MP4 ngokusemthethweni. Gcina kwi-WebM ukufaka kwi-web apho ubungakanani befayili encinci bubalulekile. Gcina kwi-MOV xa usebenza kwi-Final Cut okanye ezinye ii-Apple-native pipelines.

Ingaba ukuguqulwa kwe-MPEG kubuyisela ikhowudi yevidiyo?

Xa umbhali wekhowudi yomthombo ngaphakathi kwe-MPEG uhambelana nomgcini wenjongo siyi-remux ngaphandle kokuphinda siyikhowudi (ikhawulezayo, engenakulahleka). Xa umbhali wekhowudi kufuneka utshintshe (umzekelo, i-HEVC ukuya kwi-H.264) ividiyo iphinde ikhowudiwe — ihamba phantsi, ngexabiso elincinci lomgangatho wohlobo.