AV1 ndi royalty-free video codec anapangidwa kuti aphe H.264 ndi HEVC pamodzi bitrate, pa mtengo wa kwambiri slower encoding.
Ntchito Zofala
Modern web video
High-efficiency streaming
Next-gen video
AV1 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndi fayilo ya AV1?
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AV1 (AOMedia Video 1) is a modern royalty-free video codec with excellent compression.
Kodi AV1 ndi codec kapena mtundu wa fayilo?
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Codec, chifukwa chake yankho la "mwanji ndizitsegule" siliyenera kukhala lokha. AV1 limafotokoza mmene chithunzi chimasinthidwa; silimanena chilichonse za momwe bitstream ikugwiritsidwa ntchito pa diski, ndipo iyenera kukhala ndi chosindikizira m'malo mwake kuti chitha kutsegulidwa. Fayilo yotchedwa AV1 m'maphunziro ndi bitstream m'matumba ena amtundu waukulu, ndipo kusintha kumatanthauza kusintha matumba, codec, kapena onse awiri. AV1 ndi royalty-free video codec Alliance for Open Media anatulutsa mu 2018 monga wotsatira wa VP9.
Nchifukwa chiyani zinthu zambiri za webusaiti zimaperekedwa ngati AV1?
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Chifukwa cha izi, imapangidwa kuti ikwaniritse ntchitoyi: mafayilo ang'onoang'ono, kukhazikitsidwa kwamphamvu, palibe plugin ndi lisensi yokhumudwitsa. Izi zimapangitsa kuti zikhale zabwino pakutumiza ndi zosadziwika pazinthu zonse - zosintha, ma galleri a foni ndi zida zakale zimazi ignore. Kusintha kwa mtundu wazofunikira ndi zomwe zimapangitsa kuti zinthu zomwe zatsitsa zitha kugwiritsidwa ntchito pa intaneti. AV1 amabweretsa pafupifupi 30% yabwino kusamvana kuposa H.264 pa ubwino wofanana ndi kunyamula palibe ndalama latsopano, chifukwa chake YouTube ndi Netflix kunyamula izo.
Kodi ndingapeze AV1 mu tabu ya browser popanda kukhazikitsa chilichonse?
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Yes - AV1 ndi imodzi mwamapulogalamu amtundu wa kanema omwe amagwiritsa ntchito masamba, chifukwa chake kuchotsa fayilo ku tab kapena kuyika patsamba limagwira ntchito pa desktop ndi mafoni. Izi zimapangitsa kuti zikhale zoyenera kwa chilichonse chomwe chiyenera kusewera patsamba la webusaiti, ndipo ndichifukwa chake kusintha kwa mtunduwu nthawi zambiri ndi njira yofulumira kwambiri ya "vidiyo siyidzasewera patsamba langa".
Nchifukwa chiyani AV1 kusewera kumathamanga kapena kutuluka pa makina oyambirira?
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Chifukwa chake chimasinthidwa mu software. Ma decoders a hardware video amaphatikizapo mndandanda wokhazikika wa mafomu, ndipo AV1 ndi kunja kwa izi pazinthu zambiri, kotero kuti chilichonse chimapangidwanso ndi CPU. Pa desktop yatsopano yomwe ndi yowononga; pafoni, laptop yakale kapena smart TV imawonekera ngati ma frame osunthira, mpweya wa fan ndi batri. Kusintha kwa mtundu wothandizidwa ndi hardware kumachotsa vuto lonse. AV1 ndi codec, si kontena - bitstream nthawi zambiri amayenda m'ma MP4 kapena WebM, kugwirizana ndi Opus kapena AAC audio.
Kodi ma subtitle m'malo a AV1 amatha kusankhidwa, kapena kuphulika m'zithunzi?
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Chosankha, ngati adawonjezeredwa bwino. AV1 imabweretsa ma subtitle monga ma stream awo okha kudzera pa kanema, kotero woyang'anira angasinthire zinenero, kuzimitsa, kapena kuzisintha m'mpikisano womwe umathandizira. Ma subtitle osungunuka ndi othekanso - ndi pixels okha mu frame - koma ndi okhazikika, ndipo nthawi zina palibe chifukwa chosankha pamene chonyamula chimathandizira chinthu choyenera.
Kodi AV1 ndi yatsopano kwambiri kuti ithandizidwe mokwanira?
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Kuchepetsa choncho chaka chilichonse, koma kusiyana ndi lakuti. Software thandizo anafika mofulumira; hardware thandizo akubwera ndi zipangizo zatsopano, ndipo foni, TV kapena wosewera mpira m'mbuyomu inu angathe kungokhala preeminent izo. pamene ali ovomerezeka ndi kuyerekeza bwino kuposa mtundu amasintha, chifukwa chake ndi bwino kusintha kwa kutumiza ndi kusinthidwa kwa kugwirizana.
Kodi fayilo ya AV1 ingagwiritsidwe ntchito ndi ma audio angapo?
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Yes — a original-language mix, a dub ndi nkhani ya nkhani zonse zikhoza kukhala mu fayilo imodzi ndi wosewera mpira kusinthidwa pakati pawo. Malamulo awiri: ambiri foni ndi TV osewera kusonyeza kokha koyamba track ngakhale ambiri ndi opezeka, ndi kusintha kwa mtundu popanda multi-track chithandizo chabwino amasunga track imodzi ndi kuchotsa ena. Sankhani track mukufuna pamaso kusinthidwa, kuposa kuzindikira pambuyo amene mmodzi anapulumuka.
Kodi AV1 imasunga masamba olemba?
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Ndikofunika — masamba ali m'ma metadata a kontena, kotero kujambula kwa nthawi yayitali kungagwiritsidwe ntchito ndi gawo, osati ponyamula mbale ya progress. Amatha kupulumutsidwa ndi kusinthidwa ku mtundu wina wodziwa masamba ndipo amatulutsidwa, mopanda mawu, ndi wina amene alibe malo oti aziika. Ngati masamba ndi ofunika, ndi bwino kuonetsetsa kuti mudzasankha mtundu wa kutulutsa, osati pambuyo pake.
Kodi ndi ndani amene amayendetsa mtundu wa AV1?
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Palibe munthu, m'njira imeneyi: zofunikira ndi za anthu, kukhazikitsa ndi ufulu kulemba, ndipo palibe kampani ikhoza kusintha mfundo za pambuyo pake. Izi ndi chifukwa chake zimawonekera m'mapulogalamu otsegulira ndi m'malamulo a archiving, komwe mtundu woyang'anira ndi wogulitsa mmodzi ndi vuto. Kugulitsa ndi kuthandizira kwachuma - nthawi zambiri ndi mtundu ndi zofunikira zabwino kwambiri ndi kugwirizana kwa chipangizo cha patchiest.
Kodi ndingasinthe dzina la chidacho popeza AV1 sichisintha?
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Kwambiri nthawi zonse, ndipo ndi bwino kumvetsa chifukwa chake: kuwonjezeka ndi label, pamene bytes m'maganizo ndi zopangidwa kwa mtundu wina mfundo. Kusintha dzina amapanga fayilo amene dzina lake amalonjeza chinachake za zinthu zake sikuti kubweretsa, ndi zimene amatsegula izo kapena amakana fayilo kapena misreads izo. Mmodzi waukulu kulephera ndi awiri mtundu amene ndi weniweni wofanana wonyamula pansi pa dzina losiyana - ndi ngakhale pamenepo bwino rewrap ndi chitetezo kuposa kusintha dzina.
Kodi ndingasinthe fayilo yonse ya AV1 mafayilo m'modzimmodzi?
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Ndi akaunti, yeah - kugwa iwo limodzi ndipo iwo ali mu mnda monga ntchito imodzi kuposa kusamalira mmodzi pa nthawi, ndi zosankha zofanana zogwiritsira ntchito m'magulu ndi zotsatira zobwerera limodzi. Free conversions kuyendetsa imodzi wapamwamba pa nthawi (kuphatikiza zida zimatenga awiri); a ndalama malire ndi zimene zimatsegula processing gulu ndi zikuluzikulu per-fayilo malire, amene ndi zimene amachititsa kusintha archive lonse zothandiza.
