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Kukweza

Momwe mungasinthire M4V ku WebM

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 WebM mafayilo

M4V ku WebM Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji M4V kupita ku WebM popanda kubwezeretsa kanema wa kanema?

Ngati ma kontena a M4V ndi WebM angagwiritse ntchito codec yomweyo (H.264, H.265, VP9, AV1), wosintha amabwerera ku remuxer: ma streams oyamba amakopedwa ndi byte-by-byte ku WebM kontena ndipo amasintha kokha. Remux ya 1 GB M4V ku WebM nthawi zambiri imatha m'masekondi a 5-15 ndi kuwonongeka kwabwino.

Kodi ma audio ambiri adzapulumuka kusinthidwa kwa M4V kupita ku WebM?

Ndikoyenera - zonse zolemba za audio mu M4V (kuwunika kwa woyang'anira, mabungwe osiyanasiyana, mawu ofotokoza) amasungidwa mu WebM 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.

Kodi ma subtitle amasunga zosunga pamene M4V amasinthidwa kuti WebM?

Ma subtitle olimba (ma tracks osankhika) amapulumuka pamene WebM 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 WebM amasunga masamba olemba / kuyendera kwa DVD?

Metadata ya bokosi limasintha pakati pa M4V ndi WebM 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 WebM kumabweretsa fayilo yosasinthika ngati simuwonjezera ma markers m'manja.

Kodi ndi chiyani za MKV zowonjezera (fonti, kusindikiza) pamene mukupita M4V ku WebM?

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 WebM kumachotsa ma attachments pamene WebM 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 WebM imagwiritsa ntchito ndi yosasinthika?

Kodiyi ya default imasankhidwa kuti igwirizane ndi WebM 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 WebM?

HDR static metadata (HDR10 mastering display values, max content light level) imatha kupita ku WebM 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 WebM kontena lomwe silitha kunyamula gawo la DV limatha ku HDR10.

Kodi wosinthira M4V mpaka WebM adzasunga kusinthasintha kwa framerate (VFR)?

MKV ndi WebM amalemba ma timestamps a real-frame ndi kuwongolera VFR mwanjira yachibadwa, kotero kuti M4V VFR imatha kukhala ndi WebM 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 WebM kwa zolinga zosatheka.

Nchifukwa chiyani fayilo yanga WebM ndi yaying'ono / yayikulu kuposa M4V pambuyo posintha?

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 WebM (kutsitsa pa intaneti) ndichifukwa chofala kwambiri cha kugwa kwakukulu.

Kodi wosinthira M4V mpaka WebM amasamalira 4K / 8K / 60fps?

Ndiyo mpaka 8K (7680x4320) pa Premium. Mlingo wopanda malire umatha 4K (3840x2160) mpaka kumapeto kwa fayilo ya 1 GB. Ma remuxes oyera (kupita kwa codec yofanana) ya M4V yokulirapo kupita ku WebM amalepheretsa I / O ya diski, osati CPU - 30 GB M4V amasinthanso kupita ku WebM m'miphindi yochepa popanda kuyankhulana. Amasinthanso kukula ndi kuchuluka kwa ma pixel.

Kodi fayilo yanga M4V ndi yapadera panthawi ya WebM yosinthira?

Ndikoyenera - mafayilo a M4V omwe adatulutsidwa amachitidwa m'mawu osiyana ndi omwe amagwira ntchito ndipo amasungidwa m'maola angapo a kumaliza. Sitingawone, kusungira, kusungira kapena kugawana zomwe zili. Onani /privacy/ kwa zenera la kusungira deta. Mzere wosintha umagwira ntchito pazinthu zomwe timawongolera kuyambira pachiyambi mpaka pachiyambi; palibe API yachitatu yomwe imalandira fayilo yanu.

Kodi ndingapeze, kuchotsa, kapena kulumikizana ndi M4V mafayilo panthawi ya WebM yosinthira?

Si pa ntchito yomweyo - onetsetsani kuti kusintha kumakonzekera pa chotengera / codec. Pezani /trim/ kuti muchepetse M4V koyamba, kenako mupange mndandanda wa M4V -> WebM. Kuti mugwirizanitse ma clip angapo m'modzi WebM, chida cha /merge/ chimagwirizana nawo pazomwe zimagwirizana (zimasintha ngati ma input amagawana codec, amasinthanso ngati sichoncho) ndipo amatulutsa fayilo imodzi ya WebM pamapeto pake.