H.266/VVC video encoding standard pom zoo

Tom qab yuav luag tsib xyoos ntawm kev txhim kho pom zoo tus tshiab video encoding standard H.266, tseem hu ua VVC (Versatile Video Coding). H.266 yog touted ua tus successor rau H.265 (HEVC), tsim ua ke los ntawm pab pawg neeg ua hauj lwm MPEG (ISO/IEC JTC 1) thiab V.C.E.G. (ITU-T), nrog kev koom tes ntawm cov tuam txhab xws li Apple, Ericsson, Intel, Huawei, Microsoft, Qualcomm thiab Sony. Kev tshaj tawm txog kev siv cov encoder thiab decoder rau H.266/VVC yuav tsum nyob rau lub caij nplooj zeeg.

H.266/VVC muab kev sib kis tau zoo thiab khaws cia ntawm txhua qhov kev daws teeb meem ntawm lub vijtsam (los ntawm SD thiab HD rau 4K thiab 8K), txhawb nqa cov yeeb yaj kiab nrog txuas ntxiv dynamic ntau yam (HDR, High Dynamic Range) thiab cov yees duab panoramic hauv 360-degree hom. YCbCr xim qhov chaw tau txais kev txhawb nqa nrog 4: 4: 4 thiab 4: 2: 2 chromatic hloov pauv, xim qhov tob ntawm 10 mus rau 16 cov khoom hauv ib lub channel, thiab cov chaw pabcuam rau cov ntaub ntawv xws li qhov tob thiab pob tshab.

Muab piv rau H.265 (HEVC), tus qauv tshiab qhia tau tias muaj kev nce ntxiv hauv qhov sib piv thiab tso cai rau, ntawm cov bitrates zoo sib xws, kom txo tau cov ntaub ntawv xa mus los ntawm kwv yees li 50% yam tsis poob cov duab zoo. Piv txwv li, yog tias rau 90-feeb video hauv UHD zoo hauv H.265 nws yog qhov tsim nyog los hloov 10 GB ntawm cov ntaub ntawv, ces H.266 tso cai rau koj kom ua tau raws li 5 GB thaum tswj cov qib zoo tib yam. Rau kev sib piv, AV1 hom nyob rau hauv cov nqe lus ntawm compression efficiency overtakes HEVC qhov nruab nrab los ntawm 17% (ntawm qhov siab bitrates los ntawm 30-43%).

Tus nqi ntawm kev nce compression efficiency yog ib qho teeb meem tseem ceeb ntawm algorithms, uas ua rau muaj kev xav tau ntau ntxiv rau kev siv cov khoom siv hauv computer (txog 10 zaug rau kev encoding thiab mus txog 2 zaug rau kev txiav txim siab piv rau H.265). Tsis zoo li AV1 video encoding hom, siv H.266/VVC hauv koj cov khoom yuav tsum tau them cov nuj nqis. Txhawm rau daim ntawv tso cai patents uas sib tshooj nrog tus qauv, lub koom haum MC-IF (Media Coding Industry Forum) tau tsim, uas suav nrog ntau tshaj 30 lub tuam txhab thiab cov koom haum uas muaj cov cuab yeej cuab tam siv hauv H.266/VVC.

Tau qhov twg los: opennet.ru