M4V → WebM

Guqula Eyakho M4V kuya WebM amafayela kalula

Khetha amafayela akho

noma cindezela bese ususa amafayela akho lapha

I-Free Plan: 1 Ukushintsha/ihora · Iya ngaphandle komkhawulo →

Guqula amafayela afinyelela ku-1 GB mahhala, abasebenzisi be-Pro bangaguqula amafayela afinyelela ku-100 GB; Bhalisa manje

Ukulayisha

Indlela yokuguqula M4V kuya WebM

Isinyathelo 1: Layisha eyakho M4V amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho WebM amafayela

M4V kuya WebM Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiguqula kanjani i-M4V ibe yi-WebM ngaphandle kokubuyisela umbhalo ongezansi wevidiyo?

Uma ama-M4V ne-WebM amabhokisi angaba nesixhumi esifanayo (H.264, H.265, VP9, AV1), umguquli ubuyela emuva ku-remux: ama-streams aphansi akopiwe ngo-byte-by-byte ku-WebM ibhokisi futhi ushintsho lwe-wrapper kuphela. I-remux ye-1 GB M4V ku-WebM ivame ukuqedwa ngamasekondi angama-5-15 ngaphandle kokulahlekelwa umgangatho. Ukuthuthukiswa M4V MP4 - H.264 noma HEVC nge AAC - nge optional Apple FairPlay DRM ne iTunes isiqephu metadata. WebM idinga ukucophelela: VP8 noma VP9 ividiyo (AV1 manje) nge Vorbis noma Opus umsindo, futhi akukho okuthile okuningi.

I M4V yami inezinhlamvu zomsindo eziningi — zingaba zonke zihlala ngaphakathi kwe WebM?

Akunakuthembeka. M4V igcina imisindo eminingi njengezingoma zohlobo lokuqala, kodwa WebM uxhaso lokudlala ngaphezu kwengoma yokuqala akulingani, ngakho abadlali abaningi bazoveza kuphela eyodwa. Khetha ingoma oyifunayo ngaphambi kokuguqula; abanye bakhishwa kahle kumafayela abo ngaphezu kokushiya emgodini ofihlayo. I-M4V igcina izibonisi zesigaba, umsebenzi wobuciko kanye nezingcingo zesihloko esingezansi ngendlela i-Apple TV app elindele ngayo, okujwayelekile MP4 kuvame ukulahlekelwa. WebM ilungile encane noma kuphi ngaphandle kwe-browser - ama-video editors, amafoni 'ama-galleries asekhaya nama-Smart TVs ahlala engaziboni.

Kungani ihele lami M4V lingakwazi ukushintsha ku WebM?

Kuyinto evamile kakhulu i-DRM. Ezinye M4V izithombe zibhalwe ngokufihlakele ku-bitstream level yisitolo noma isofthiwe eyenza, futhi isithombe esibhalwe ngokufihlakele asikwazi ukucinywa yithu noma yinoma yini ngaphandle kwesitshixo selayisense. Izithombe ongazirekhodile, ozenzayo noma ozibhumele ngaphandle azikhuselwanga ziguqulwa ngokuvamile; ukuthenga okusemthethweni akuzokwenza, futhi akukho oguqulelayo angaba nesiqiniseko sokuthi kungashintshwa. DRM-ikhuselwe M4V ukuthenga ngeke kushintshwe yinoma yini; kuphela M4V izithombe ezingakhuselwanga ziguqulwe, futhi abadlali Apple-ayikho njalo kufanele ubanzi kuthiwa.

Ingabe i-WebM izodlala kwi-browser uma i-M4V ingadlalanga?

Yebo, futhi lokho kuyisizathu esiphelele sokuguqulwa. I M4V efakwe kwikhasi lewebhu ibonisa umdlali okhubazekile noma icindezela ukulayisha, ngoba iziphequluli azikho izikhombisi ezizo. WebM idlala ngaphakathi ngengxenye yevidiyo ye-HTML5 engavamile ngaphandle kweplugin noma kusetshenziswa okungaphandle. I-WebM idlala ngokusemthethweni kuwo wonke umsakazi omusha ngaphandle kweplugin, ngaphandle kwelayisense yemali kanye nokungabonisi kwepatent, okuyenza ibe yiphutha levidiyo efakwe kwi-web.

Zonke M4V ne WebM ziyizihlungi ezisha — yiziphi okufanele ngizigcine?

Gcina noma yikuphi okuhambisana lapho ihele lihamba khona, ngoba akukho okungcono ku-abstract. Enye yalezi ezimbili ifakwe ukuhambisana kokudlala futhi enye igcinwa konke ohele angaba nalo, futhi zihweba ngazo zonke ngaleyo ngxenye. Umbuzo ofanele kakhulu wezindawo zokubhukuda eziningi ukufaka ingobo yomlando kwibhokisi eligcwele izici futhi uveze kulowo ohambisanayo uma kudingeka.

Ingabe umsindo ogcwele uzoqhubeka nokuguqulwa M4V kuya ku WebM?

Yebo — wonke umculo ohambayo ku M4V (umbono womqondisi, izilimi ezihlukile, umculo ochazayo) ugcinwa ku WebM lapho isiqoqi esizosiza umsindo ohambayo oningi. MKV ne MOV ziphatha umculo ohambayo ongenasiphelo; MP4 isekela abaningi kodwa abanye abadlali behardware babona umculo 1 kuphela; WebM iphele ku-Opus / Vorbis umculo owodwa. I-WebM iyingxenye eqinile ye-Matroska eshicilelwe yi-Google ngo-2010 ekhethekile ekubeni yividiyo ye-HTML5 equkethwe ngaphandle kwe-royalty.

Ingabe amabhayisikobho esihloko esingezansi agcinwa uma kuguqulwa M4V kuya ku WebM?

Izihloko ezincane ezilula (izihloko ezikhethiwe) zihlala lapho WebM zingazithwala: MKV igcina i-SRT, ASS, SSA, PGS, VobSub ngokusemthethweni; MP4 igcina kuphela i-mov_text (ifomethi ephukile). Ukushintsha MKV nge-ASS styled subs ku-MP4 kuzozikhuphula zibe yi-mov_text noma zizicwebezele. Izihloko ezinzima (zicwebezelelwe kwividiyo) zithwale ngaphandle kokungabaza.

Ingabe M4V kuya ku WebM igcina iziphawuli zesiga-nyezi / ukuzula kwe-DVD-style?

Isigaba se-metadata sidlulisa phakathi kuka M4V no WebM lapho izihlungi zombili zixhasa isiqephu se-atomi (MKV, MP4, MOV). I-WebM igcina iziqephu kwi-Matroska-compatible block, ngakho-ke i-MKV <-> isigaba se-WebM sihamba ngokuhlanzekile. I-AVI ayinasiqephu esicacisiwe, ngakho-ke ukushintsha i-AVI ibe yi-WebM kwenza ifayela elingahlukanisiwe ngaphandle kokuthi uhlanganise iziphawuli ngesandla.

Yini mayelana nezifakiwe ze-MKV (izifomethi, isigqoko somsebenzi) uma usuka ku M4V usuka ku WebM?

MKV yindawo yokugcina eyinhloko kuphela egcina amafayela axhunywe ngokuzenzakalela (izifomethi ze-TTF ze-ASS subs, isithombe sokuzivikela se-JPG, izingeniso ze-PDF eziguqulwe nge-fan). Ukusuka ku-M4V kuya ku-WebM ushiya lezi zifomethi lapho i-WebM ingakho MKV — ama-streams aphansi aguqulwa, kodwa umthwalo oxhunywe uhlala emsuka. Gcina i-M4V njenge-backup uma uhlala ubheke izifomethi ezixhunywe.

Yini i-codec esetshenziswa yi-WebM ngokuzenzakalela?

I-codec ejwayelekile ikhethiwe ukufana ne WebM isitoreji ngokuzithandela: MKV ikhetha i-H.265 (HEVC) ukucindezela okuhle; MP4 ikhetha i-H.264 ukuxhasa isisetshenziswa esibanzi; WebM ikhetha i-VP9; AVI isebenzisa i-MPEG-4 ASP (DivX/Xvid lineage). Nciphisa nge-codec ethuthukisiwe engezansi — AV1 itholakala ku-MKV / WebM lapho ufuna khona ukucindezela okuphezulu futhi ungalindela ukucindezela.

Ingabe i-HDR (HDR10, Dolby Vision) ihlala isikhathi eside M4V kuya ku-WebM?

I-HDR metadata ehlala njalo (i-HDR10 mastering display values, max content light level) ihamba phambili ku-WebM uma izihlungi zombili ne-codec ekhethiwe ziyixhasa (HEVC, AV1 ku-MKV / MP4). I-Dolby Vision inamandla kakhulu — i-DV profile 5 / 7 / 8.1 ku-M4V ihlala kuphela ku-MKV nge-HEVC; ukushintsha ku-WebM isihlungi esingathwala i-DV layer ihamba phambili ku-HDR10.

Ingabe i M4V kuya ku WebM igcina ifreyimu eshintshayo (VFR)?

MKV ne WebM zirekhoda ama-timestamps we-frame ngayinye futhi ziphatha i-VFR ngokusemthethweni, ngakho-ke i-M4V VFR ihlala i WebM yalezi fomu ngaphandle kokuphindeka kokuhlolwa. I-MP4 igcina ama-timestamps futhi kodwa abanye abadlali bakholelwa ukuthi i-CFR; umguquli ubonisa "u forza CFR" ukushintsha okuphinda ukuhlolwa kwe-VFR M4V kuya ku-24 / 30 / 60 fps WebM ngezinhloso ezinomthelela.