Sakin ɗakin karatu na SVT-AV1 1.5 (Scalable Video Technology AV1) an buga shi tare da aiwatar da na'urar rikodin rikodin bidiyo na AV1, don haɓakawa wanda ake amfani da hanyoyin lissafin daidaitattun kayan aikin da ke cikin Intel CPUs na zamani. Intel ne ya kirkiro aikin tare da haɗin gwiwa tare da Netflix tare da burin cimma matakin aiki wanda ya dace da yin rikodin bidiyo akan-da-tashi da kuma amfani da sabis na bidiyo akan buƙatun (VOD). A halin yanzu, ana aiwatar da ci gaba a ƙarƙashin kulawar Open Media Alliance (AOMedia), wanda ke kula da haɓaka tsarin ɓoye bidiyo na AV1. A baya can, an ƙaddamar da aikin a cikin tsarin aikin OpenVisualCloud, wanda kuma ya haɓaka SVT-HEVC da SVT-VP9 encoders. Ana rarraba lambar a ƙarƙashin lasisin BSD.
Don amfani da SVT-AV1, ana buƙatar processor x86_64 tare da goyan bayan umarnin AVX2. Rufe rafukan 10-bit AV1 a ingancin 4K yana buƙatar 48 GB na RAM, 1080p - 16 GB, 720p - 8 GB, 480p - 4 GB. Saboda rikitarwar algorithms da aka yi amfani da su a cikin AV1, sanya wannan tsari yana buƙatar ƙarin albarkatu fiye da sauran nau'ikan, wanda baya ba da damar yin amfani da madaidaicin madaidaicin AV1 don canza rikodin lokaci na gaske. Misali, mai rikodin hannun jari daga aikin AV1 yana buƙatar ƙarin ƙididdigewa sau 5721, 5869 da 658 idan aka kwatanta da x264 (babban bayanin martaba), x264 (“high” profile) da libvpx-vp9 encoders.
Daga cikin canje-canje a cikin sabon sakin SVT-AV1:
- An inganta ingantattun daidaito / saurin daidaitawa, sakamakon abin da aka saita saitattun M1-M5 da 15-30%, kuma saitattun M6-M13 da 1-3%.
- An ƙara sabon saiti na MR (--preset -1) wanda aka ɗauka azaman samar da ingancin tunani.
- An inganta aikin saitattun M8-M13 a cikin yanayin ɓoye mara ƙarancin latency.
- Ƙara goyon baya don zaɓi mai ƙarfi na tsarin hasashen canjin matsayi "miniGOP" (Rukunin Hotuna) don daidaitawa bazuwar damar shiga, wanda aka kunna ta tsohuwa a cikin saitattu har zuwa kuma gami da M9. Hakanan yana yiwuwa a ƙayyade ƙaramin girman miniGOP na farawa don hanzarta ɗaukakawa.
- Ana ba da ikon canza abubuwan sikelin lambda akan layin umarni.
- An sake rubuta plugin ɗin don gstreamer.
- Ƙara ikon tsallake takamaiman adadin firam kafin fara rufawa.
- An gudanar da gagarumin tsaftacewa na masu canji da ba a yi amfani da su ba, kuma an sake yin sharhi a cikin lambar. An rage girman girman sunaye don sauƙaƙa karanta lambar.
source: budenet.ru