AV1 Isiguquli

Tshintsha AV1 kuya futhi kusuka kumafomethi ahlukahlukene

Mayelana AV1

I-AV1 iyifomethi yokuminyanisa ividiyo evulekile, engenanzuzo eyenzelwe ukusakazwa kahle kwevidiyo nge-inthanethi. Inikeza ukusebenza kahle kokucindezela okuphezulu ngaphandle kokuyekethisa ikhwalithi yokubukwayo.

Ukusetshenziswa Okuvamile

Modern web video
High-efficiency streaming
Next-gen video

AV1 Imibuzo Evame Ukubuzwa Yokuguqulwa

Yini ihele levidiyo AV1?

AV1 yi-video codec hhayi isiqoqi — ichaza ukuthi ifreyimu ngayinye ikhodwe kanjani. AV1 ivame ukuboshwa ngaphakathi kwesiqoqi njenge MP4 noma MKV uma igcinwa kwidiski.

Ingabe AV1 yi-codec noma ifomethi yehele?

I-codec, ngakho-ke impendulo ku "ungayivula kanjani" ayisoze yashesha. AV1 ichaza ukuthi isithombe sicindezelwe kanjani; ayisho lutho mayelana nokuthi i-bitstream igcinwa kanjani kwidiski, futhi idinga isikhala esingaphansi kwayo ngaphambi kokuba umdlali ayichofoze. Amafayela aphawulwe AV1 ngokuvamile yi-bitstream ngaphakathi kwe-wrapper ejwayelekile, futhi ukushintsha kuvame ukusho ukuguqula i-wrapper, i-codec, noma zombili. AV1 yi-video codec engekho emthethweni ye-Alliance for Open Media ekhishwa ngo-2018 njengengxenye yokulandela i-VP9.

Kungani okuqukethwe kwewebhu kuthunyelwe njenge AV1?

Ngokuba ifakwe ngokukhethekile le misebenzi: amafayela amancane, ukuqala ngokushesha, akukho plug-in futhi akukho layisense lokukhathazeka. Lokhu kwenza kube ngcono ekunikezelweni futhi kungaphawuleka nganoma yini enye - amathuluzi okuhlela, ama-gallery wefoni namadivayisi adala ahlala ekhohlwa. Ukushintsha ifomu elijwayelekile-lomsebenzi yilokho okukwenza okuqukethwe okulayishelwe kusebenziseke ngaphandle kwe-web. AV1 inikeza cishe 30% engcono ucindezelo kuna H.264 esezingeni elifanayo futhi ithatha akukho izinkokhelo izitifiketi, okuyinto kungani YouTube ne Netflix push it.

Ingabe ngidlala AV1 ku-tab yesiphequluli ngaphandle kokufaka noma yini?

Yebo — AV1 yisinye sezifomethi zevidiyo ezincane ezixhunywe ku-browser, ngakho-ke ukushaya ifayela kwi-tab noma ukulifaka kukhasi kusebenza kudesktop neselula. Lokhu kwenza kube ngcono ukukhethwa kwanoma yini edinga ukudlala ngaphakathi kwekhasi lewebhu, futhi kuyisizathu sokuguqulwa kulolu hlobo ngokuvamile kuyindlela ekhawulezayo yokuxazulula "ividiyo ayizodlala kuwebhusayithi yami".

Kungani i AV1 idlala ngokugcizelela noma isebenza ngokufudumele kuma-machines adala?

Ngenxa yokuthi i-software isebenzisa i-decode. Ama-hardware video decoders afaka kuphela uhlu oluqinile lwefomethi, futhi AV1 ungaphandle kwayo kumadivayisi amaningi, ngakho-ke yonke ifreyimu ivuselelwa kabusha yi-CPU endaweni. Kudesktop yamanje elahlekile; ku-smartphone, i-laptop edala noma i-smart TV ivela njengefreyimu elahlekile, umsindo we-fan ne-battery drain. Ukushintsha ku-hardware-supported format kususa izinkinga zonke. AV1 yi-codec, hhayi isiqoqi — i-bitstream ihamba ngaphakathi MP4 noma WebM, ixhunywe ne-Opus noma i-AAC umsindo.

Ingabe izihloko ezingezansi ngaphakathi kwe AV1 zingakhethwa, noma ziboshwe kwisithombe?

Kukhethwa, uma kufakwe kahle. AV1 ifaka izihloko ezingezansi njengemithombo yabo ehlukile engezansi kwevidiyo, ngakho-ke umbukeli angashintsha ulwimi, azicishe, noma aphinde aphinde asebenzise izihloko ezingezansi kumdlali oxhasa lokhu. Izihloko ezingezansi ezibomvu zingasetshenziswa — ziyi-pixels kuphela kwifreyimu — kodwa zihlala njalo, futhi akuyona isizathu sokukhetha uma isiqulatho sixhasa into engokoqobo.

Ingabe AV1 ikhona futhi ikhona ukuxhaswa okubanzi?

Kuncane njalo ngonyaka, kodwa ibanga liyiqiniso. Usizo lwesofthiwe lwafika ngokushesha; usizo lwehardware luvela kuphela ngezinto ezintsha, futhi ifoni, i-TV noma umdlali phambi kwakho ungase uqale ngokulula. lapho kuxhaswa khona kungcono kakhulu kunalokho okuhlobene nefomethi eshintshanayo, ngakho-ke kufanelekile ukushintshana ukuze kuthunyelwe futhi kufanelekile ukushintshana ngaphandle kokusebenza.

Ingabe ihele AV1 ligcina ama-tracks omsindo amaningi?

Yebo - imixholo yesiNgisi, i-dub ne-comment ingahlala yonke kwifayela elilodwa ne-player eshintsha phakathi kwazo. Izinqumo ezimbili: amafoni amaningi nama-television adlalayo abonisa kuphela umculo wokuqala kodwa amanye akhona, futhi ukuguqulwa kufomethi ngaphandle kosizo olukhulu lwe-tracks agcina umculo owodwa futhi akhuphula okunye. Khetha umculo ofuna ngaphambi kokuguqula, ngaphezu kokubheka emuva ukuthi iyiphi ehlala.

Kungani uguqula i-AV1 ibe yifomethi yevidiyo ehlukile?

Gcina i-AV1 ku-MP4 uma ufuna ukusakazwa kwe-universal - ama-web browsers, amadivayisi eselula, ama-TV ahlakaniphile kanye nokuhlela ama-apps wonke adlala MP4 ngokusemthethweni. Gcina ku-WebM ukufakelwa kwe-web lapho i-file size encane ibalulekile. Gcina ku-MOV uma usebenza ku-Final Cut noma kwezinye i-Apple-native pipelines. AV1 encoding ihamba kancane, futhi amathuluzi decoders kuphela wavela kumafoni namahlaya kusukela mayelana 2020 kuqala - amadivayisi adala buyela amandla-ukudla isofthiwe decoding.

Ingabe ukuguqulwa kwe-AV1 kuphinde kuhlanganise ividiyo?

Uma umsuka we-codec ngaphakathi kwe-AV1 uhambisana ne-target container sizoyi-remux ngaphandle kokuphindeka kokufaka ikhowudi (ngokukhawulela, ngaphandle kokulimala). Uma i-codec idinga ukuguqulwa (umzekelo, HEVC ukuya ku-H.264) ividiyo iphindeka ukufakwa ikhowudi — ngokucophelela, ngezindleko ezincane zekhwalithi yeminyaka.