M4V ku MKV Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndingasinthire bwanji M4V kupita ku MKV popanda kubwezeretsa kanema wa kanema?
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Ngati ma kontena a M4V ndi MKV angagwiritse ntchito codec yomweyo (H.264, H.265, VP9, AV1), wosintha amabwerera ku remuxer: ma streams oyamba amakopedwa ndi byte-by-byte ku MKV kontena ndipo amasintha kokha. Remux ya 1 GB M4V ku MKV nthawi zambiri imatha m'masekondi a 5-15 ndi kuwonongeka kwabwino. Structurally M4V ndi MP4 - H.264 kapena HEVC ndi AAC - ndi osankhika Apple FairPlay DRM ndi iTunes bokosi metadata. MKV ndi codec-agnostic: H.264, HEVC, VP9 ndi AV1 kanema kulowa bwino mbali AAC, FLAC, Opus, DTS kapena Dolby Audio mu imodzi wapamwamba.
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 MKV idzasewera bwino pafoni kapena pa TV?
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Sichingakhale choncho. M4V imasinthidwa ndi silicon yoperekedwa pafoni, ma tablet ndi ma TV, chifukwa chake imasewera popanda kutulutsa batri. MKV 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. MKV ali pafupifupi palibe native hardware thandizo - foni, mawebusayiti ndi TVs nthawi zambiri ayenera VLC kapena remux pamaso iwo adzasewera.
Malinga ndi M4V ndi MKV ndi ma kontena oyambirira - omwe ndiyenera kusamalira?
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Kusunga zomwe zimagwirizana ndi komwe fayilo ikuyenda, chifukwa palibe chomwe chimayenda bwino. Mmodzi mwa iwo awiri amapangidwa kuti azigwirizana ndi kusewera, ndipo wina amapangidwa kuti azisunga zonse zomwe fayilo ingakhale nayo, ndipo amagulitsana motsutsana ndi wina ndi mnzake molingana ndi liwiroli. Funso lothandiza kwa mabuku ambiri ndi kusungira m'mabokosi okhala ndi zinthu zambiri ndipo kutumiza kumodzi wogwirizana ndi zosowa. M4V amasunga Chapter olemba, ntchito zojambulajambula ndi subtitle nyimbo mu mawonekedwe a Apple TV app amayembekezera, amene MP4 mosavuta nthawi zambiri amawononga. MKV ndi archived chidebe cha kusankha chifukwa amasunga unlimited audio nyimbo, softsubs, mfundo ofotokoza ndi kukhudza zojambulajambula mu imodzi wapamwamba.
Kodi ma audio ambiri adzapulumuka kusinthidwa kwa M4V kupita ku MKV?
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Ndikoyenera - zonse zolemba za audio mu M4V (kuwunika kwa woyang'anira, mabungwe osiyanasiyana, mawu ofotokoza) amasungidwa mu MKV pamene chikwama chofunikira chimathandizira ma audio ambiri. MKV ndi MOV amayendetsa ma audio osatha; MP4 amathandizira ambiri koma ena osewera a hardware amawona kokha track 1; WebM imatha pa Opus / Vorbis track. MKV ndi Matroska, otsegulira chidebe anapanga mu 2002 ndi palibe kuvomereza zoletsa ndi palibe malire pa zimene angachite.
Kodi ma subtitle amasunga zosunga pamene M4V amasinthidwa kuti MKV?
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Ma subtitle olimba (ma tracks osankhika) amapulumuka pamene MKV angawagwiritse ntchito: MKV amagwiritsa ntchito SRT, ASS, SSA, PGS, VobSub mwachilengedwe; MP4 amagwiritsa ntchito mov_text (format yosasinthasintha). Kusintha MKV ndi subs a ASS ku MP4 kumawawononga kuti akhale mov_text kapena kuwalemba. Hardsubs (olembana mu kanema) amagwiritsa ntchito ngakhale.
Kodi M4V mpaka MKV amasunga masamba olemba / kuyendera kwa DVD?
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Metadata ya bokosi limasintha pakati pa M4V ndi MKV pamenepo onse awiri amapereka bokosi la atomu (MKV, MP4, MOV). WebM imasunga bokosi m'ma block ogwirizana ndi Matroska, choncho MKV <-> WebM bokosi limayenda molimba. AVI sichimakhala ndi bokosi la spec, choncho kusintha kwa AVI ku MKV kumabweretsa fayilo yosasinthika ngati simuwonjezera ma markers m'manja.
Kodi ndi chiyani za MKV zowonjezera (fonti, kusindikiza) pamene mukupita M4V ku MKV?
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MKV ndi yokha mainstream yokhala ndi ma fayilo ophatikizidwa (TTF fonts for ASS subs, JPG cover art, fan-translated PDF inserts). Kuchokera ku M4V kupita ku MKV kumachotsa ma attachments pamene MKV si MKV - ma streams elementary amasinthidwa, koma payload ophatikizidwa amakhala m'malo ochokera. Tengani M4V ngati chitetezo ngati mumatengera ma fonts ophatikizidwa.
Kodi codec yomwe MKV imagwiritsa ntchito ndi yosasinthika?
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Kodiyi ya default imasankhidwa kuti igwirizane ndi MKV yokhala ndi katundu: MKV imasinthidwa kukhala H.265 (HEVC) kuti ikhale yolimba kwambiri; MP4 imasinthidwa kukhala H.264 kuti ikhale yolimba kwambiri; WebM imasinthidwa kukhala VP9; AVI imagwiritsa ntchito MPEG-4 ASP (DivX / Xvid linage).
Kodi HDR (HDR10, Dolby Vision) imatha bwanji M4V mpaka MKV?
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HDR static metadata (HDR10 mastering display values, max content light level) imatha kupita ku MKV pamene ma kontena awiri ndi codec osankhidwa amathandizira (HEVC, AV1 mu MKV / MP4). Dolby Vision ndi wolimba kwambiri - DV profile 5 / 7 / 8.1 mu M4V nthawi zambiri amapulumuka okha ku MKV ndi HEVC; kusinthidwa ku MKV kontena lomwe silitha kunyamula gawo la DV limatha ku HDR10.
Kodi wosinthira M4V mpaka MKV adzasunga kusinthasintha kwa framerate (VFR)?
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MKV ndi WebM amalemba ma timestamps a real-frame ndi kuwongolera VFR mwanjira yachibadwa, kotero kuti M4V VFR imatha kukhala ndi MKV ya mafomuwa popanda kubwezeretsa. MP4 imasunga nthawi yowonjezerapo koma ena osewera amaganiza kuti CFR; wosintha amatulutsa "kulepheretsa CFR" kuti abwezeretse VFR M4V ku 24 / 30 / 60 fps MKV kwa zolinga zosatheka.
Remux ya codec yomweyo imatulutsa kukula kwakukulu (kuphatikiza kwa kontena kumasiyana ndi 0.1-2%). Kusintha kwa codec kungapangitse kukula kwa 50% kapena kuposa: H.264 kupita ku H.265 kumatha kuchepetsa fayilo pazomwe zimawoneka bwino; H.264 kupita ku AV1 kumatha kuchepetsanso panthawi ya slow.Kuchokera ku high-bitrate M4V (Blu-ray rip) kupita ku low-bitrate MKV (kutsitsa pa intaneti) ndichifukwa chofala kwambiri cha kugwa kwakukulu.
