AVI Izixhobo

Kuba ingaphambili kwabo ngeminyaka emininzi. AVI yifayile ye RIFF yesiqendu: ukulandelana okuthe tyaba kwesandi esidityanisiweyo kunye nevidiyo yesiqendu kunye nesalathisi esibophelelayo kwisiphelo. Akukho mbono we frame rate etshintshayo, akukho ndawo yokubeka umbhobho wesihloko esingaphantsi, kwaye isalathisi sisizathu sokuba ifayile ecutiweyo ayizukukhangela nanini na. Yonke into ebuhlungu malunga nefomati ilandelela kwakhona kuyilo. AVI yiMicrosoft's Audio Video Interleave, enikezelwe ngowe-1992 phezulu kwe RIFF chunk format - enye yezinto ezidala ezigcinwe zihlala zijikeleza. I-AVI ayinakuxhaswa kwe-codecs ekutsha, i-frame rate etshintshayo, izihloko ezimfutshane ezicocekileyo okanye iifayile ezingaphezulu kwe-4 GB ngaphandle kwe-hacks, kwaye i-chunk nganye i-overhead ikhupha ifayili.

Kuba ifomati ilula ngokwaneleyo ukubhala ngexesha elibonakalayo kwizixhobo zekhompyutha ezincinci, kwaye kuba udidi lwezixhobo zokufumana imifanekiso zakhiwa ngaphaya kwayo kwaye azikho zihlaziyiwe. Isixhobo asiyenzanga umgangatho wokuziphatha, sibhala into eyaziyo ifirmware yayo. Oku kubangela ukuba ezifayile zikhulu kuba ziquka kwaye kutheni ukuguqula kuzo kukuqala into oyenzayo umntu.

Iibrawuzeri zithutha abacoci boluhlu olufutshane lweefomati, kwaye AVI 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.

Umgangatho wefomati ye-cage, hayi ingxaki kwi-recorder. AVI inemida esebenzayo yefayili enye ehamba phambili kwizinto ezide okanye eziphezulu ze-bitrate, ngoko usetyenziso lokuthatha luhlula ushicilelo ngaphezu kokwenza ifayile engakhange ikhoyo. Ukutshintsha kwi-container engenalo umda onjalo kuvumela iinxalenye ukuba ziphinde zidityaniswe kwividiyo eqhubekayo enye, ehlala ibangela eyiyo abantu ukutshintsha le fomati.

Kuba ikhowudi iguqulwa kwinkqubo yekhompyutha. Izixhobo zokufaka ikhowudi zevidiyo ziquka kuphela uluhlu oluqinileyo lweefomati, kwaye AVI ingaphandle kwayo kwizixhobo ezininzi, ngoko ke iframe nganye ibuyiselwa kwakhona yi-CPU endaweni yayo. Kwidesktop yangoku elahlekile; kwifowuni, ilaptop edala okanye i-smart TV ibonisa njengee-frames ezilahlekileyo, intshukumo ye-fan kunye nokutshaya kwebhetri. Ukuguqula kwifomati exhaswe yi-hardware isusa ingxaki ngokupheleleyo. Iifayili ze-AVI zingaphambili kunee-codecs eziphambili: lindele i-MPEG-4 Inxalenye ye-2 (DivX/Xvid), i-Motion JPEG okanye iifayili ezingenakucothayo ezingenakucothayo kunokuba i-H.264.

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.

Ecaleni kwayo, okanye kwimifanekiso. AVI ayinalo unikezelo lwesicatshulwa esingaphantsi sayo, ngoko ke iinketho ezimbini ziyi-sidecar.srt ifayile umdlali ulayisha phantsi kwevidiyo, okanye ukutshaya umbhalo kwiframes ngexesha lokubuyisela ukukhowuda. I-sidecar igcina isicatshulwa esingaphantsi esihleli kwaye sitshintshela kodwa ihamba njengefayili yesibini elula ukulahleka; ukufakela kuqhubeka nakweyiphi na i-transfer kodwa akufuneki kuvalwa emva koko.

Ubudala ngokwalo alukuyingxaki - iifomati ezininzi ezivela kulo nyaka zihlala zilungile, ngokucacileyo ngenxa yokuba konke kwakuba neminyaka emininzi yokuzisebenzisa. Okubalulekileyo kulapho ixesha licinga khona: iifayile ezincinci, abaqhubi abancinci, akukho msebenzi womnatha, kunye neempawu ezingafunekiyo. apho ezi zinto zicinga khona, ifomati ilungile. apho azisebenzi, le yisizathu sokuguqula.

Kuba isiqulathi seefayili sikwingxenye elula. AVI yacaciswa malunga ne Microsoft' s codecs, kwaye akukho nto ngaphandle kwe Windows ithumela i decoder yazo - ngoko ifayile ivula, ixela ixesha layo, kwaye emva koko ivelisa akukho mfanekiso okanye akukho lizwi naphi na. Ukufakela i codec pack yi impendulo edala kwaye incinci; ukuguqula umthwalo kwinto yonke inkqubo sele i decoded yi enye eqinileyo.

Ayikuko kuwe. Ii codecs ezibandakanyiweyo ziquka iindidi zepateni, kwaye ilayisensi ibekwe ngabantu abathutha ii decoders - ifowuni, umkhangeli zincwadi, indlela yokusebenza - ixesha elide phambi kokuba ifayile ifike kuwe. Yiyo loo nto ifomati ikho kuyo yonke ihardware kwaye kutheni i royalty- free efana nayo ikhona, kwaye ayitshintshanga nto malunga nokuguqula ifayile oyinayo.

Ukwenza oku kunjalo. Ifomati yacaciswa malunga nesinye okanye ii canals ezimbini, ngoko ke umxube ojikelezayo kufuneka ujikelezwe ezantsi kwi stereo ukufakela - elungileyo kwi headphones kunye nefowuni yomvakalisi kwaye engalunganga nantoni na ehambayo kwi home cinema umxhasi. Ukuba umxholo unemixholo emininzi efanele ugcinwe, guqula kwicontainer ehambisa ngaphezu kokushiya umxube ophantsi ukwenzeka ngokulula.