WebM → AV1

Sinthani Yanu WebM ku AV1 mafayilo mosavuta

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Kukweza

Momwe mungasinthire WebM ku AV1

Gawo 1: Kwezani yanu WebM 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 AV1 mafayilo

WebM ku AV1 Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu

Kodi ndingasinthire bwanji WebM kupita ku AV1 popanda kuwononga mtundu wa kanema?

Ikani fayilo yanu ya WebM ndipo wosinthira amayendetsa CRF-based re-encode yoyang'anira kutulutsa kwa AV1 (CRF 18 mosalekeza, matanthauzo ochepa = fayilo yayikulu / yapamwamba). Codec imasankhidwa kuti igwirizane ndi AV1 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. WebM ndi mwanzeru m'mbali: VP8 kapena VP9 kanema (AV1 zaposachedwapa) ndi Vorbis kapena Opus audio, ndi chilichonse chinachake. AV1 ndi codec, si kontena - bitstream nthawi zambiri amayenda m'ma MP4 kapena WebM, kugwirizana ndi Opus kapena AAC audio.

Kodi AV1 angagwiritse ntchito nyimbo zambiri kuposa imodzi?

Ndikoyenera, ndipo ndi chithandizo choyenera pa WebM. AV1 imachita chilichonse cha audio monga chida chabwino kwambiri, choncho mgwirizano wachilankhulo chachikhalidwe, dub ndi woyang'anira woyang'anira amatha kukhala m'fayilo imodzi ndi wosewera yemwe amasintha pakati pawo pazosowa. 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 AV1 imathandizira masamba olemba omwe WebM sanachite?

Amachita. AV1 amasunga masamba monga metadata ya kontena, kotero kuti kujambula kwanthawi yayitali kungagwiritsidwe ntchito pogwiritsa ntchito gawo lomwe limatha kusinthidwa pogwiritsa ntchito bar ya progress. WebM sichingakhalepo kuti ipereke mfundozi, chifukwa chake ngati chiyambi chidatumizidwa ndi mndandanda wa kapitoli, chidapezeka mu fayilo ya sidecar - bweretsani kuti musinthe ndipo chimalemba mu AV1.

Kodi AV1 idzasewera bwino pafoni kapena pa TV?

Sichingakhale choncho. WebM imasinthidwa ndi silicon yoperekedwa pafoni, ma tablet ndi ma TV, chifukwa chake imasewera popanda kutulutsa batri. AV1 nthawi zambiri imabwerera ku decoding ya mapulogalamu pa hardware yomweyo - kulemera kwa CPU, chipangizo chotentha, ndi ma frame osunthika pa 4K. Kwa chipangizo chofunikira, WebM ndi chotetezeka chokhalamo. Kodi AV1 ndi yochepa, ndipo decoders ya hardware idawonekera pafoni ndi TV kuyambira 2020 mpaka pano - zida zakale zimabwerera ku decoding ya software yokhala ndi mphamvu.

Kodi AV1 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 ndi codec iti ya kanema yomwe AV1 imagwiritsa ntchito?

Izi zimadalira pa AV1 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. AV1 ndi royalty-free video codec Alliance for Open Media anatulutsa mu 2018 monga wotsatira wa VP9.

Kodi nyimbo yanga ya audio idzapulumuka kusinthidwa kwa WebM kupita ku AV1?

Ndiko. Ngati WebM ndi AV1 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 AV1 zimathandizira. Audio yokhala ndi ma track ambiri (mawu ofotokoza, mabungwe osiyanasiyana) imasungidwa.

Kodi ndingapeze bwanji mitengo yazithunzi yoyamba pamene ndisintha WebM kupita ku AV1?

Mwa default yeah - 24fps WebM imakhala 24fps mu AV1; 60fps WebM 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 WebM kupita ku AV1?

Kodikodi yofananayo imasintha (WebM H.264 → AV1 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 AV1 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 AV1 codec / chidebe chazofunikira zanu.

Kodi ndi nthawi yayitali bwanji kusinthira kanema wa 1-hour WebM kuti AV1?

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 WebM → AV1 imatha m'maola 18-40 malinga ndi resolution ndi codec yoyenera.

Kodi ndi chiyani chokwanira chothandizira kwa WebM mpaka AV1?

Kufika pa 8K (7680 × 4320) pa maphunziro a Premium. Kusintha kwaulere kumatha ku 4K (3840 × 2160) pogwiritsa ntchito kukula kwa fayilo. HDR metadata (HDR10, HDR10 +, Dolby Vision pamene pali) imatha kuchitika pomwe ma containers a WebM ndi AV1 amathandizira.

WebM

WebM idapangidwira intaneti, imapereka makanema otsatsira opanda ndalama zambiri okhala ndi ma codec a VP8/VP9.

AV1

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