Sinthani AV1 ku MP4

Sinthani Yanu AV1 ku MP4 mafayilo mosavuta

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Kukweza

Momwe mungasinthire AV1 ku MP4

Gawo 1: Kwezani yanu AV1 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

AV1 ku MP4 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji AV1 kupita ku MP4 popanda kubwezeretsa kanema wa kanema?

Ngati ma kontena a AV1 ndi MP4 angagwiritse ntchito codec yomweyo (H.264, H.265, VP9, AV1), wosintha amabwerera ku remuxer: ma streams oyamba amakopedwa ndi byte-by-byte ku MP4 kontena ndipo amasintha kokha. Remux ya 1 GB AV1 ku MP4 nthawi zambiri imatha m'masekondi a 5-15 ndi kuwonongeka kwabwino. AV1 ndi codec, si kontena - bitstream nthawi zambiri amayenda m'ma MP4 kapena WebM, kugwirizana ndi Opus kapena AAC audio. Zikuoneka kuti pafupifupi aliyense MP4 m'munda ndi H.264 kanema ndi AAC audio; chidebenso mwalamulo ali HEVC, AV1 ndi VP9.

My AV1 ili ndi maudindo ambiri - kodi onse amapita ku MP4?

Sizotsimikizika. AV1 imasunga ma audio ambiri monga ma tracks achiwiri, koma MP4 kusewera kuthandizira pambuyo pa gawo loyamba ndilopanda malire, kotero ambiri osewera adzawonetsa imodzi. Sankhani gawo lomwe mukufuna poyamba; ena amaphunzitsidwa bwino ku mafayilo awo oyambirira kuposa kuchoka m'chipinda chokhala ndi ma CD omwe amawateteza. AV1 amabweretsa pafupifupi 30% yabwino kusamvana kuposa H.264 pa ubwino wofanana ndi kunyamula palibe ndalama latsopano, chifukwa chake YouTube ndi Netflix kunyamula izo. MP4 amathandiza okha imodzi yotchuka subtitle mtundu (mov_text), ndi multi-traka audio ndi osati olimba m'malo desiki osewera.

Kodi MP4 ndi chonyamula kapena codec, ndipo kodi izi zimasintha zomwe ndimapeza?

Izi amasintha zimene kuyembekezera kuchokera kutuluka wapamwamba. Mmodzi wa mbali ya izi kusintha dzina encoding kuposa wrapper, kotero zimene zimabweranso ndi kuti bitstream m'matumba ameneyo amafuna bwino — nthawi zambiri MP4 kapena MKV. Kuwonjezeka kusonyeza m'matumba; codec ndi zimene inali kuika kukula kwa fayilo ndi kumene izo adzasewera.

Kodi ma audio ambiri adzapulumuka kusinthidwa kwa AV1 kupita ku MP4?

Ndikoyenera - zonse zolemba za audio mu AV1 (kuwunika kwa woyang'anira, mabungwe osiyanasiyana, mawu ofotokoza) amasungidwa mu MP4 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. MP4 ndi ISO / IEC 14496-14, standardized mu 2001 ndi anachokera pamodzi QuickTime katundu layout MOV ntchito.

Kodi ma subtitle amasunga zosunga pamene AV1 amasinthidwa kuti MP4?

Ma subtitle olimba (ma tracks osankhika) amapulumuka pamene MP4 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 AV1 mpaka MP4 amasunga masamba olemba / kuyendera kwa DVD?

Metadata ya bokosi limasintha pakati pa AV1 ndi MP4 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 MP4 kumabweretsa fayilo yosasinthika ngati simuwonjezera ma markers m'manja.

Kodi ndi chiyani za MKV zowonjezera (fonti, kusindikiza) pamene mukupita AV1 ku MP4?

MKV ndi yokha mainstream yokhala ndi ma fayilo ophatikizidwa (TTF fonts for ASS subs, JPG cover art, fan-translated PDF inserts). Kuchokera ku AV1 kupita ku MP4 kumachotsa ma attachments pamene MP4 si MKV - ma streams elementary amasinthidwa, koma payload ophatikizidwa amakhala m'malo ochokera. Tengani AV1 ngati chitetezo ngati mumatengera ma fonts ophatikizidwa.

Kodi codec yomwe MP4 imagwiritsa ntchito ndi yosasinthika?

Kodiyi ya default imasankhidwa kuti igwirizane ndi MP4 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). MP4 ndi otetezeka zotheka kutumiza zolinga - aliyense foni, browser, console, wolemba ndi Smart TV anamanga mu zaka zapitazi amasewera izo popanda mapulogalamu atsopano.

Kodi HDR (HDR10, Dolby Vision) imatha bwanji AV1 mpaka MP4?

HDR static metadata (HDR10 mastering display values, max content light level) imatha kupita ku MP4 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 AV1 nthawi zambiri amapulumuka okha ku MKV ndi HEVC; kusinthidwa ku MP4 kontena lomwe silitha kunyamula gawo la DV limatha ku HDR10.

Kodi wosinthira AV1 mpaka MP4 adzasunga kusinthasintha kwa framerate (VFR)?

MKV ndi WebM amalemba ma timestamps a real-frame ndi kuwongolera VFR mwanjira yachibadwa, kotero kuti AV1 VFR imatha kukhala ndi MP4 ya mafomuwa popanda kubwezeretsa. MP4 imasunga nthawi yowonjezerapo koma ena osewera amaganiza kuti CFR; wosintha amatulutsa "kulepheretsa CFR" kuti abwezeretse VFR AV1 ku 24 / 30 / 60 fps MP4 kwa zolinga zosatheka.

Nchifukwa chiyani fayilo yanga MP4 ndi yaying'ono / yayikulu kuposa AV1 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 AV1 (Blu-ray rip) kupita ku low-bitrate MP4 (kutsitsa pa intaneti) ndichifukwa chofala kwambiri cha kugwa kwakukulu.

Kodi wosinthira AV1 mpaka MP4 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 AV1 yokulirapo kupita ku MP4 amalepheretsa I / O ya diski, osati CPU - 30 GB AV1 amasinthanso kupita ku MP4 m'miphindi yochepa popanda kuyankhulana. Amasinthanso kukula ndi kuchuluka kwa ma pixel.

AV1

AV1 ndi mawonekedwe otseguka, opanda malipiro a kanema opangidwa kuti aziyenda bwino pa intaneti. Amapereka mphamvu yopondereza kwambiri popanda kusokoneza mawonekedwe.