M4V → AVI

Sinthani Yanu M4V ku AVI mafayilo mosavuta

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Kukweza

Momwe mungasinthire M4V ku AVI

Gawo 1: Kwezani yanu M4V mafayilo pogwiritsa ntchito batani lomwe lili pamwambapa kapena pokoka ndi kugwetsa.

Gawo 2: Dinani batani la 'Convert' kuti muyambe kusintha.

Gawo 3: Tsitsani pulogalamu yanu yosinthidwa AVI mafayilo

M4V ku AVI Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji M4V kupita ku AVI popanda kuwononga mtundu wa kanema?

Ikani fayilo yanu ya M4V ndipo wosinthira amayendetsa CRF-based re-encode yoyang'anira kutulutsa kwa AVI (CRF 18 mosalekeza, matanthauzo ochepa = fayilo yayikulu / yapamwamba). Codec imasankhidwa kuti igwirizane ndi AVI kontena - H.264 kwa MP4 yokhala ndi kukula kwakukulu, H.265 kwa MKV yokhala ndi kukula kwakukulu, VP9 kwa WebM, AV1 kwa ma pipelines atsopano. Structurally M4V ndi MP4 - H.264 kapena HEVC ndi AAC - ndi osankhika Apple FairPlay DRM ndi iTunes bokosi metadata. AVI owona anayamba m'mbuyomo m'ma codecs m'madera: kuyembekezera MPEG-4 gawo 2 (DivX / Xvid), Motion JPEG kapena raw uncompressed mafano osati H.264.

Kodi chimachitika ndi ma subtitle omwe ali mu fayilo yanga M4V?

Sakupezeka kuti asankhidwe, chifukwa AVI siyimakhala ndi ma subtitle olimba kuti azisunga. Pali njira ziwiri zotuluka: kuchotsa nawo pavidiyo panthawi yosintha, zomwe zimawapangitsa kukhala okhazikika komanso osasinthika, kapena kuwatumiza ngati.srt osiyana ndi AVI kuti wosewerayo azitsitsa. Wosintha akukuwuzani zomwe adachita kuposa kuchotsa nawo mosasamala. AVI alibe native thandizo kwa codecs zamakono, kusinthasintha framerate, softsubs kapena owona kuposa 4 GB popanda hacks, ndi zake per-chunk overhead bloats fayilo.

Nchifukwa chiyani fayilo yanga M4V siyisintha kukhala AVI?

Zina M4V mafayilo amasinthidwa pa level bitstream ndi sitolo kapena pulogalamu yomwe idatulutsa, ndipo kusinthidwa kwa encrypted stream sikungathe kusinthidwa ndi ife kapena ndi chilichonse popanda chida cha lisensi. Fayilo yomwe mwalemba, kutumiza kunja kapena kutsitsa osatetezedwa imasintha bwino; kugula kwa licensed sichidzachitika, ndipo palibe wosintha yemwe anganene mosasamala kanthu. DRM-kuteteza M4V kugula sangakhale anasinthidwa ndi chilichonse; okha unprotected M4V owona ndi convertable, ndi non-Apple osewera nthawi zambiri ayenera kuwonjezeka anasintha dzina.

Kodi AVI idzasewera bwino pafoni kapena pa TV?

Sichingakhale choncho. M4V imasinthidwa ndi silicon yoperekedwa pafoni, ma tablet ndi ma TV, chifukwa chake imasewera popanda kutulutsa batri. AVI nthawi zambiri imabwerera ku decoding ya mapulogalamu pa hardware yomweyo - kulemera kwa CPU, chipangizo chotentha, ndi ma frame osunthika pa 4K. Kwa chipangizo chofunikira, M4V ndi chotetezeka chokhalamo.

Kodi chimachitika ndi 5.1 surround audio pamene M4V ikusinthidwa ku AVI?

Idzalowetsedwa ku stereo, chifukwa AVI siyimakhala ndi njira yodalirika ya multichannel. Kulowetsedwa kumagwiritsa ntchito ITU standard coefficients kuti mauthenga m'malo ozungulira azitha kumvetsedwa bwino ndipo ma surrounds amafika pamalo otsika kuposa kugwa. Chomwecho chilichonse chomwe chimadalirika pa malo osiyana a ma channels chidzatha pambuyo pake.

Nchifukwa chiyani ndingasinthire M4V ku mtundu wachikhalidwe monga AVI?

Chifukwa cha zinthu zambiri za hardware zomwe sizikuphunzira chilichonse chokhudzana ndi zinthu zatsopano komanso sizingatheke. DVD osewera, mayunitsi agalimoto, makamera osewera, mawonetsero amakampani ndi zida zambiri zofalitsa zofalitsa zimavomereza AVI ndi chilichonse chokhudzana ndi chilichonse. Kusinthana ndi njira yoyenera yotsika pamlingo, yogulitsidwa m'malo mwa ntchito pa chipangizo chomwe sichingakhale ndi njira ina. AVI ndi trivially yosavuta, amene ndi chifukwa chake kale camcorders, kusonkhana kagawo, DVD ripping zipangizo ndi Windows-era mapulogalamu onsebebe kutulutsa izo.

Kodi ndi codec iti ya kanema yomwe AVI imagwiritsa ntchito?

Izi zimadalira pa AVI kontena. MP4 defaults kuti H.264 kwa kusewera kwamphamvu kwambiri pafoni, masamba, ndi Smart TVs. MKV defaults kuti H.265 / HEVC kwa pafupifupi theka la kukula kwa fayilo pa quality yofanana. WebM defaults kuti VP9. Zosankha zazikulu zimasonyeza kusankha kodek ngati mukufuna kuchotsa. AVI ndi Microsoft Audio Video Interleave, anayambitsa mu 1992 pamwamba pa RIFF chunk mtundu - imodzi mwa zaka zakale zinyalalabe m'madera.

Kodi nyimbo yanga ya audio idzapulumuka kusinthidwa kwa M4V kupita ku AVI?

Ndiko. Ngati M4V ndi AVI amagwiritsa ntchito codec ya audio (mwachitsanzo, onse amagwiritsa ntchito AAC), audio imasinthidwanso popanda kusinthidwanso - bit-identical. Ngati codecs ndi osiyana, audio imasinthidwanso kukhala AAC / Opus / Vorbis malinga ndi zomwe AVI zimathandizira. Audio yokhala ndi ma track ambiri (mawu ofotokoza, mabungwe osiyanasiyana) imasungidwa.

Kodi ndingapeze bwanji mitengo yazithunzi yoyamba pamene ndisintha M4V kupita ku AVI?

Mwa default yeah - 24fps M4V imakhala 24fps mu AVI; 60fps M4V imakhala 60fps. Ngati mukufuna kusintha kuchuluka (mwachitsanzo, kulumikizana 29.97 → kupitilira 30, kapena 60 → 30 kwa kutsitsa), kusankha kwa framerate kumatha kuwongolera 3: 2 kutsitsa, kuchotsa, ndi kuphatikizira ma frame mu gawo limodzi lokha la encoding.

Kodi kukula kwa fayilo idzasintha bwanji kuchokera ku M4V kupita ku AVI?

Kodikodi yofananayo imasintha (M4V H.264 → AVI H.264 yomwe isintha kontena): kukula kwake kuli pafupifupi chimodzimodzi. Kusintha kwa codec kungayambitse kusinthika kwambiri: H.264 → H.265 nthawi zambiri kumadula fayiloyo panthawi yomweyo; VP9 ndi yofanana; AV1 imadula 20-30% koma ndi yocheperako.

Kodi fayilo ya AVI idzasewera pa iPhone, Android, ndi Smart TVs?

MP4 / H.264 imasewera mosalekeza pazogwiritsa ntchito zonse zamakono. MOV / H.264 imasewera pazogwiritsa ntchito za Apple ndi ma TV ambiri koma si nthawi zonse pa Android oyambirira. MKV iyenera VLC pa iOS. WebM ndi msakatuli woyamba. Zosankha zopitilira muyeso zimaphatikizapo "kugwirizana kwa chipangizo" choyamba chomwe chimasankha chotetezeka kwambiri AVI codec / chidebe chazofunikira zanu.

Kodi ndi nthawi yayitali bwanji kusinthira kanema wa 1-hour M4V kuti AVI?

Kusintha kwa codec yomweyo ndi nthawi ya 30 mpaka 60 kwa fayilo ya 1-hour. Kodidi yokhala ndi codec imagwira ntchito panthawi ya 0.3-0.7x yochokera pa GPU yathu, kotero kuti 1-hour M4V → AVI imatha m'maola 18-40 malinga ndi resolution ndi codec yoyenera.