Codec tau tshaj tawm hauv 2018 tau txais kev txhawb los ntawm cov players loj hauv kev lag luam streaming. Cov neeg muab khoom kho vajtse tau lees paub kev txhawb nqa rau cov codec tshiab, thiab cov ntsiab lus kawg nrog AV1 kho vajtse txiav txim siab yuav tsum muaj nyob rau thaum xaus ntawm lub xyoo. Tawm tsam qhov keeb kwm yav dhau los no, patent trolls nrog kev thov nyiaj txiag tau ua ntau dua.
Video codec qhib qhov chaw tau tsim los ntawm 2015 los ntawm engineers los ntawm ntau lub tuam txhab, xws li Amazon, BBC, Netflix, Hulu thiab lwm tus, uas tsim lub Alliance rau Qhib Media (AOMedia). Cov thev naus laus zis tshiab yog npaj rau kev tshaj tawm cov yeeb yaj kiab hauv kev daws teeb meem siab (4K thiab siab dua), nrog rau cov xim nthuav dav thiab ntau yam HDR thev naus laus zis. Ntawm cov yam ntxwv tseem ceeb ntawm lub codec, AOMedia taw qhia compression algorithm piv rau cov txheej txheem uas twb muaj lawm, cov kev xav tau ntawm hardware xav tau, thiab qhov yooj yim tshaj plaws thiab scalability.
Cov tuam txhab no nrog lawv tus kheej cov kev pabcuam streaming xav tau codecs zoo li huab cua. Ua ntej, AV1 txo qis kev sib txuas hauv Is Taws Nem bandwidth uas yuav tsum tau ua ob qho tib si ntawm cov ntaub ntawv chaw (DPC) qib thiab qib ntawm cov chaw muab kev pabcuam thiab cov neeg siv kawg. Qhov thib ob, Amazon Studios siv 65mm zaj duab xis thiab IMAX MSM 9802 koob yees duab (uas nyuaj heev rau kev xauj) thiab RED Monstro rau zaj duab xis Aeronafta () qhia tau hais tias lub tuam txhab tab tom npaj rau lub sijhawm tom qab 4K, qhov twg cov codecs tam sim no yuav tsis zoo li ua tau zoo.
Raws li rau software decoders, lawv tam sim no ntau lub tuam txhab suav nrog Cisco, Google, Netflix, Microsoft thiab Mozilla. Nyob rau tib lub sijhawm, software decoding, raws li txoj cai, ib txwm txhais tau tias muaj zog siv zog thiab siv tsawg heev. Yog li ntawd, nws yuav nthuav kom pom kev txhawb nqa rau hardware decoding.
Chips & Media yog ib tus thawj coj los qhia AV1 kho vajtse decoder thaum Lub Kaum Hli xyoo tas los. Video processor yog ib daim ntawv tso cai cov cuab yeej cuab tam (synthesized ntawm RTL theem) uas yuav embedded nyob rau hauv ib tug system-on-chip (SoC) siv lub internal ARM AMBA 3 APB thiab ARM AMBA3 AXI tsheb npav. Qhov no decoder txhawb AV1 codec qib 5.1, qhov siab tshaj plaws bitrate ntawm 50 Mbps, xim tob ntawm 8 los yog 10 khoom, thiab 4: 2: 0 xim subsampling. Lub Wave 510A's single-core 450MHz configuration tuaj yeem siv los txiav txim siab 4K daws teeb meem ntws ntawm 60Hz (4Kp60) thaum lub teeb tsa dual-core tuaj yeem siv los txiav txim siab 4Kp120 lossis 8Kp60 ntws.
Ntxiv nrog rau Chips & Media, ntau lwm lub tuam txhab muab ntawv tso cai video processors nrog AV1 kev txhawb nqa. Piv txwv li, Txhawb ob qho tib si AV1 thiab lwm hom nrov xws li H.264, H.265 (HEVC), VP9 thiab JPEG. Lawv kuj txhawb 4: 2: 0 thiab 4: 2: 2 chroma subsampling rau cov neeg siv khoom thiab cov ntawv thov kev tshaj lij. Nyob rau tib lub sijhawm, Allegro hais tias cov kev daws teeb meem no tau tso cai los ntawm cov khoom siv thib ib thiab yuav siv rau hauv cov khoom siv kawg uas yuav raug tso tawm ua ntej xyoo kawg.
Ntxiv nrog rau cov ntawv tso cai video processors, ntau tus neeg tsim khoom tau tshaj tawm cov txheej txheem npaj ua-on-chip nrog AV1 kev txhawb nqa rau TVs, teeb tsa lub thawv, cov players thiab lwm yam khoom siv zoo sib xws. Amlogic sawv ntawm lwm tus txhawb kev daws teeb meem txog 8Kp60, Broadcom nrog 4Kp60 kev txhawb nqa, Realtek (4Kp60) thiab (8 Kp60). Tsis tas li ntawd, LG's thib peb tiam Ξ±9 SoCs, uas lub zog rau lub tuam txhab 8 2020K TVs, kuj txhawb AV1. Tsis tas li ntawd, MediaTek tshaj tawm Dimensity 1000 mobile system-on-chip nrog AV1 hardware decoder.
Raws li koj tuaj yeem pom, kev txhawb nqa rau kev txiav txim siab kho vajtse ntawm AV1 ntws los ntawm cov neeg tsim khoom ntawm cov ntawv tso cai video processors thiab chips tseem yog me me. Txawm li cas los xij, muab kev txhawb nqa ntawm cov codec tshiab los ntawm ntau lub tuam txhab thev naus laus zis (Apple, Amazon, AMD, ARM, Broadcom, Facebook, Google, Hulu, Intel, IBM, Microsoft, Netflix, NVIDIA, Realtek, Sigma thiab ntau lwm tus), Nws tsim nyog cia siab tias yuav txhawb nqa kho vajtse rau AV1 hauv xyoo tom ntej.
Raws li txoj cai, AV1 video codec tsis tas yuav them cov nqi ntawv tso cai rau kev siv qee cov patents uas muaj los ntawm cov tswv cuab ntawm Alliance for Open Media (AOMedia). Txawm hais tias tus txheej txheem suav nrog patent hauv AV1 xav tau kev xav ntawm ob tus kws tshaj lij uas nws tsis ua txhaum cai rau leej twg, muaj ib txwm muaj patent trolls uas nws txoj cai yeej ib txwm ua txhaum cai los ntawm txhua tus.
Yog li, lub tuam txhab Luxembourg Sisvel tau sau ib lub pas dej ntawm 3000 patents los ntawm ntau lub tuam txhab uas piav qhia txog cov thev naus laus zis zoo ib yam li cov siv hauv AV1 thiab VP9. Pib txij lub Peb Hlis xyoo no, Sisvel cov uas xav tau daim ntawv tso cai no patents rau β¬ 0,32 rau ib lub cuab yeej nrog zaub (TV, smartphone, PC thiab lwm yam) thiab rau β¬ 0,11 rau ib lub cuab yeej tsis muaj zaub (chip, player, motherboard thiab lwm yam). Txawm hais tias Sisvel tsis npaj yuav them cov nqi ntawv tso cai rau cov ntsiab lus, nws pom tias software raug suav tias yog tib yam li kho vajtse, lub ntsiab lus software tsim tawm yuav tsum them rau lub tuam txhab.
Txawm hais tias Sisvel tseem tsis tau pib ua kev cai lij choj nrog cov neeg tsim kho vajtse thiab software (thiab yuav tsis pib kom txog thaum cov thev naus laus zis tau siv dav), nws yog qhov tseeb tias qhov kev xav ntawd muaj nyob. Txawm li cas los xij, AOMedia tiv thaiv cov neeg koom hauv AV1 ecosystem, txawm hais tias nws tsis piav qhia li cas.
AV1 cov neeg tsim khoom cia siab tias nws yuav muaj nyob thoob plaws txhua lub platform, yog li cia siab tias nws yuav tsum tau txais kev txhawb nqa tsis yog los ntawm cov neeg tsim khoom loj, cov tsim software thiab cov chaw muab kev pabcuam, tab sis kuj los ntawm cov neeg siv khoom siv hluav taws xob.
Txawm li cas los xij, tsis yog txhua yam yog rosy rau AV1. Ua ntej, txij li feem ntau cov neeg ua si, TVs thiab cov thawv teeb tsa tsis txhawb qhov codec, kev hloov pauv ntawm tag nrho kev lag luam rau nws yuav qeeb. Tsis tas li ntawd, nws tsim nyog nco ntsoov tias rau lub sijhawm tom qab 8K, cov neeg tsim khoom tab tom npaj AV2 codec. Qhov thib ob, qhov kev thov ntawm patent trolls yuav kom meej meej txo qhov kev txaus siab ntawm cov thev naus laus zis ntawm qee lub tuam txhab.
Tau qhov twg los: 3d xov.ru