WMV → MP4

Sinthani Yanu WMV ku MP4 mafayilo mosavuta

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Kukweza

Momwe mungasinthire WMV ku MP4

Gawo 1: Kwezani yanu WMV 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 MP4 mafayilo

WMV ku MP4 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji WMV kupita ku MP4 popanda kuwononga mtundu wa kanema?

Ikani fayilo yanu ya WMV ndipo wosinthira amayendetsa CRF-based re-encode yoyang'anira kutulutsa kwa MP4 (CRF 18 mosalekeza, matanthauzo ochepa = fayilo yayikulu / yapamwamba). Codec imasankhidwa kuti igwirizane ndi MP4 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. WMV amabweretsa Microsoft yekha VC-1 kapena WMV3 kanema ndi WMA audio - codecs pafupifupi chilichonse kunja kwa Windows decodes mwachilengedwe. Zikuoneka kuti pafupifupi aliyense MP4 m'munda ndi H.264 kanema ndi AAC audio; chidebenso mwalamulo ali HEVC, AV1 ndi VP9.

Mavidiyo anga a WMV amasonyeza ma liwiro a comb pa msewu - kodi izi zidzabweretsa ku MP4?

Idzachitika ngati simukusintha, ndipo WMV zolemba nthawi zambiri zimasinthidwa chifukwa mtunduwo umachokera kunthawi ya mafilimu ndi DVD. Ma frame ophatikizidwa amasunga madera awiri apakati omwe amatenga masentimita asanu ndi awiri; pafoni kapena monitor ya progressive-scan yomwe imawerenga ngati chotchinga chozungulira pa chilichonse chomwe chimayenda. Ikani njira yosinthira ndipo encoder imapanga madera onse m'ma frame opitilira muyeso pambuyo polemba MP4. WMV ndi Windows Media Video, Microsoft's ASF-ogwirizana mtundu kuchokera Windows XP nthawi.

Kodi ndingawonjezera ma subtitle osankhika pamene fayilo ndi MP4?

Ndikofunika. WMV ilibe nyimbo yogwiritsa ntchito zolemba zolimba, chifukwa chake ma subtitle a WMV amayenera kuphulika m'mavidiyo kapena kutumizidwa ngati fayilo ya sidecar yosiyana. MP4 amabweretsa ma subtitle monga ma stream awo osankhidwa, kotero pambuyo posintha mutha kuwonjezera SRT track yomwe woyang'anira angagwiritse ntchito, kuchotsa kapena kubwezeretsa.

Nchifukwa chiyani fayilo yanga WMV siyisintha kukhala MP4?

Zina WMV 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. WMV ndi mwamsanga m'mphepete mwa msewu: macOS, iOS, Android ndi aliyense browser ayenera decoders chitatu, ndi ena WMV owona kunyamula DRM kuti sizingatheke kusintha pa zonse.

Kodi MP4 idzasewera mu browser pamene WMV siyidzachita?

Ndikofunika, ndipo nthawi zambiri ndichifukwa cha kusintha. A WMV wophatikizidwa mu tsamba la webusaiti amasonyeza wosewera wowonongeka kapena kutsitsa, chifukwa masamba a browsers samapereka decoder kwa iye. MP4 amasewera m'masamba mwanjira ya HTML5 video element popanda plugin ndi pulogalamu yakunja. MP4 ndi otetezeka zotheka kutumiza zolinga - aliyense foni, browser, console, wolemba ndi Smart TV anamanga mu zaka zapitazi amasewera izo popanda mapulogalamu atsopano.

Kodi ndi bwino kusintha zolemba zakale za WMV kuti MP4?

Kwa chilichonse chomwe mukufuna kusungira, yeah. WMV ili ndi zaka zakale za video zopanga ndi mapulogalamu omwe amawerenga kuti amawoneka mofulumira kuchokera pafoni, mabrowser ndi maoperating system. Kusintha zithunzi ku MP4 pano, pomwe decoder yoyera imakhalabe, ndi kusiyana pakati pa archive yomwe mungatsegule muzaka makumi awiri ndi imodzi yomwe simungathe.

Kodi ndi codec iti ya kanema yomwe MP4 imagwiritsa ntchito?

Izi zimadalira pa MP4 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. MP4 ndi ISO / IEC 14496-14, standardized mu 2001 ndi anachokera pamodzi QuickTime katundu layout MOV ntchito.

Kodi nyimbo yanga ya audio idzapulumuka kusinthidwa kwa WMV kupita ku MP4?

Ndiko. Ngati WMV ndi MP4 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 MP4 zimathandizira. Audio yokhala ndi ma track ambiri (mawu ofotokoza, mabungwe osiyanasiyana) imasungidwa.

Kodi ndingapeze bwanji mitengo yazithunzi yoyamba pamene ndisintha WMV kupita ku MP4?

Mwa default yeah - 24fps WMV imakhala 24fps mu MP4; 60fps WMV 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 WMV kupita ku MP4?

Kodikodi yofananayo imasintha (WMV H.264 → MP4 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 MP4 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 MP4 codec / chidebe chazofunikira zanu. MP4 amathandiza okha imodzi yotchuka subtitle mtundu (mov_text), ndi multi-traka audio ndi osati olimba m'malo desiki osewera.

Kodi ndi nthawi yayitali bwanji kusinthira kanema wa 1-hour WMV kuti MP4?

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 WMV → MP4 imatha m'maola 18-40 malinga ndi resolution ndi codec yoyenera.