MP4 → AV1

Guqula Eyakho MP4 ukuba AV1 iifayile ngokulula

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Inkqubo ekhululekileyo: 1 IiNguqulelo/iyure · Yiya ngaphandle komda →

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Iyalayisha

Indlela yokuguqula MP4 ukuba AV1

Inyathelo 1: Layisha eyakho MP4 iifayile usebenzisa iqhosha elingasentla okanye ngokutsala nokuwisa.

Inyathelo lesi-2: Cofa iqhosha elithi 'Guqula' ukuze uqalise ukuguqula.

Inyathelo lesi-3: Khuphela i-converted yakho AV1 iifayile

MP4 ukuba AV1 Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndiyiguqula njani i-MP4 ibe yi-AV1 ngaphandle kokubuyisela umbhalo ofihlakeleyo wevidiyo?

Xa i MP4 ne AV1 iziqulatho zingathatha zombini i-codec efanayo (H.264, H.265, VP9, AV1), umguquli ubuyela umva kwi-remux: imijelo ephambili ikhopiwe i-byte-nge-byte kwi AV1 isiqulatho kwaye kutshintsha kuphela umgqomo. I-remux ye-1 GB MP4 kwi AV1 ihlala igqiba kwimizuzu eyi-5-15 ngaphandle kokufumana inzuzo yomgangatho. I-MP4 eninzi eluhlaza yi-H.264 yevidiyo enesandi se-AAC; isiqulathi sigcina ngokusemthethweni i-HEVC, i-AV1 ne-VP9. AV1 yi-codec, hayi isiqulathi-zifayili — i-bitstream ihamba ngaphakathi kwe-MP4 okanye i-WebM, idityaniswe ne-Opus okanye i-AAC yesandi.

Ingaba i AV1 igcina ngaphezulu kwengoma enye yesandi?

Ewe, kwaye yimpumelelo epheleleyo ngaphezulu kwe MP4. AV1 iphatha yonke imijelo yesandi njengento ephambili, ngoko udidi lwesivakalisi sokuqala, i-dub kunye nomlawuli wengxelo ingaphila kwifayile enye nomdlali otshintshela phakathi kwabo kwisicelo. AV1 ibonelela nge-30% yoxinzelelo olungcono kune-H.264 kwinqanaba elifanayo lomgangatho kwaye ayikho iindleko zelayisensi, nto leyo eyenza ukuba iYouTube ne-Netflix iqhubele phambili.

Ingaba i AV1 inkxaso yamachaphaza ophawu anjengoko MP4 ayizange ikwenze?

Iyenza. AV1 igcina izihloko njenge metadata yesiqulathi seefayili, ngoko ushicilelo olude lunokuqhubela phambili ngecandelo endaweni yokucoca ibar yokuqhubekeka. MP4 ayinanto yokubeka loo nkcukacha, ngoko ukuba umthombo uthunyelwe ngoluhlu lwesihloko yayikwifayile ye sidecar - inikezele kuguquleli kwaye ibhalwe kwi AV1.

Ingaba i AV1 iyaqhubeka idlala ngokulula kwifowuni okanye kwiTV?

Ingaba ayikwazi. MP4 ikhowudiwe yisilicon ekhethekileyo kwifowuni, iitablethi kunye neeTV, nto leyo eyenza ukuba idlala ngaphandle kokutyibilika kwebhetri. AV1 ihlala ibuyela umva kwisoftware yokukhowudi kwihardware efanayo - ubunzima be CPU obuphezulu, isixhobo esishushu, kunye neeframes ezikhuphekayo kwi-4K material. Kwisixhobo esimiselweyo, MP4 yindawo ekhuselekileyo yokugcinwa ehlala kuyo. AV1 ukukopela kukhawuleza, kwaye i-hardware yokukopela ivela kuphela kwifowuni kunye neTV ukusukela ngo-2020 kuqala - ii-apparatus ezidala zibuyela kwisoftware enamandla yokukopela.

Ingaba i AV1 iquka isiqulathi seefayili okanye i-codec, kwaye ngaba itshintsha into endiyifumanayo kwakhona?

Itshintsha into elindelekeyo kwifayile yemveliso. Icala elinye loguqulelo libiza ukukhowuda kunokuba ujikeleziso, ngoko oko kubuyela umva kukujikelezo lweebit ngaphakathi komgquba olungeleyo - ngokuqhelekileyo MP4 okanye MKV. Ulwandiso lubonisa umgquba; i codec yiyo eyaziyo ubungakanani befayile kwaye apho izakudlalwa khona.

Ingaba i-audio enezithotho ezininzi izakuhlala iphila ukuguqulwa kwe-MP4 ukuya kwi-AV1?

Ewe - yonke i-audio track kwi MP4 (umbono womlawuli, iilwimi ezitshintshiweyo, i-audio echazayo) igcinwa kwi AV1 xa isiqulathi seefayili esithe nkqo sixhasa i-audio ejikelezayo-eninzi. I-MKV ne-MOV ziphatha ii-audio tracks ezingaqhelekanga; i-MP4 ixhasa ezininzi kodwa abanye abadlali behardware babona kuphela i-track 1; i-WebM icapisiwe kwi-Opus / Vorbis track enye. AV1 yi-codec yevidiyo engenamda we-royalty i-Alliance for Open Media ekhutshwe ngo-2018 njengento elandelayo kwi-VP9.

Ingaba iingoma zesicatshulwa zigcinwa xa uguqula MP4 ukuya ku AV1?

Izihloko eziphantsi ezicocekileyo (iingoma ezikhethiweyo) zihlala zikhona xa AV1 zingazithabatha: i-MKV igcina i-SRT, i-ASS, i-SSA, i-PGS, i-VobSub ngokusemthethweni; i-MP4 igcina kuphela i-mov_text (ifomati ethe tyaba). Ukutshintsha i-MKV enezihloko eziphantsi ze-ASS zibe yi-MP4 kuya kuzisa iindidi eziphantsi kwi-mov_text okanye ukutshabalalisa. Iisihloko ezinzima (eziqhutywe kwividiyo) zithatha ngaphezulu nokuba kunjalo.

Ingaba MP4 ukuya ku AV1 igcina abaphawuli besahluko / ulawulo olufana ne-DVD?

I-metadata yesichazi-magama idlulisa phakathi kwe-MP4 ne-AV1 xa zombini iziqulatho zixhasa isichazi-magama se-atomic (MKV, MP4, MOV). I-WebM igcina isichazi-magama kwi-Matroska-compatible block, ngoko ke i-MKV <-> i-WebM isichazi-magama sihamba ngokucocekileyo. I-AVI ayinasichazi-magama esichaziweyo, ngoko ke ukuguqula i-AVI ibe yi-AV1 yenza ifayili engachazi-magama ngaphandle kokuba udibanisa abaphawuli ngesandla.

Yintoni malunga neziqulathi zeefayili ze-MKV (ifonti, umzobo wesiqulathi seefayili) xa usiya kwi MP4 ukuya kwi AV1?

MKV yindawo yokugcina i-mainstream kuphela egcina iifayile ezifakiwe ngokuzithandela (ifonti ze-TTF ze-ASS subs, ubugcisa be-JPG cover, i-fan-translated PDF inserts). Ukusuka kwi MP4 ukuya kwi AV1 ushiya ezi fayili zifakiwe xa i-AV1 ayiyiyo i-MKV — i-elementary streams iguqula, kodwa umthwalo odityanisiweyo uhlala kummthombo. Gcina i-MP4 njengengxelo yangaphambili ukuba uxhomekeke kwifonti ezifakelweyo.

Yeyiphi i-codec esetyenziswa yi-AV1 kwimveliso ngokumiselweyo?

I-codec emiselweyo ikhethiwe ukuhambelana ne AV1 isiqulathi seefayili ngokukhuselekileyo: MKV imiselwe ku-H.265 (HEVC) ukufezekisa ukucinezela okungcono; MP4 imiselwe ku-H.264 ukufezekisa inkxaso yesixhobo esibanzi; WebM imiselwe ku-VP9; AVI isebenzisa i-MPEG-4 ASP (DivX/Xvid lineage). Nciphisa nge-codec ephambili esuka ezantsi — AV1 ifumaneka kwi-MKV / WebM apho ufuna khona ukucinezela okuphezulu kwaye ungalindela ukungenisa ikhowudi.

I-HDR (HDR10, Dolby Vision) ihlala njani MP4 ukuya ku AV1?

I-HDR metadata ehlala njalo (i-HDR10 ibonisa amaxabiso aphezulu, umphakamo ophezulu wokukhanya kwezinto eziquletheyo) ihamba phantsi ukuya kwi-AV1 xa zombini iziqulatho kunye ne-codec ekhethiweyo ixhasa (HEVC, AV1 kwi-MKV / MP4). I-Dolby Vision inamandla ngakumbi — i-DV profile 5 / 7 / 8.1 kwi-MP4 ihlala kuphela kwi-MKV ene-HEVC; ukutshintsha kwi-AV1 isiqulatho esingathwali umbala we-DV ihamba phantsi ukuya kwi-HDR10.

Ingaba i-MP4 ukuya kwi-AV1 igcina i-framerate eguqukayo (VFR)?

MKV ne WebM zirekhoda i-frame nganye yexesha elipheleleyo kunye nokuphatha i-VFR ngokusemthethweni, ngoko ke i-MP4 VFR ihlala kwi-AV1 yale fomati ngaphandle kokuphindaphinda. I-MP4 igcina i-timestamps ngokusemthethweni kodwa abanye abadlali bakholelwa ukuba i-CFR; umguquli ubonisa "ubunzima be-CFR" ukutshintsha okubuyisela i-VFR MP4 ukuya kwi-24 / 30 / 60 fps AV1 kwiinjongo ezinomngcipheko.

MP4

Ifomathi yesikhongozeli seMP4 inokugcina ividiyo, iaudio, imibhalo engezantsi, kunye nemifanekiso kwifayile enye enoxinzelelo oluhle kakhulu.

AV1

I-AV1 yifomathi yocinezelo yevidiyo evulekileyo, esimahla eyenzelwe ukusasazwa kwevidiyo ngokufanelekileyo kwi-intanethi. Ibonelela ngokusebenza kakuhle koxinzelelo ngaphandle kokubeka esichengeni umgangatho wokubonwayo.