Siideynta maktabadda SVT-AV1 1.5 (Scalable Video Technology AV1) ayaa lagu daabacay hirgelinta codeer iyo decoder ee qaabka codeynta fiidiyoowga AV1, si loo dardargeliyo taas oo macnaheedu yahay xisaabinta isbarbardhigga hardware ee hadda ku jirta Intel CPUs casriga ah. Mashruuca waxaa abuuray Intel iyada oo la kaashanaysa Netflix iyada oo ujeedadu tahay in la gaaro heer wax qabad oo ku habboon transcoding fiidiyooga-fly iyo isticmaalka adeegyada fiidiyooga-dalbashada (VOD). Hadda, horumarinta ayaa lagu fulinayaa iyada oo ay hoos imanayso Isbahaysiga Warbaahinta Furan (AOMedia), kaas oo kormeera horumarinta qaabka codaynta fiidyowga AV1. Markii hore, mashruuca waxaa lagu sameeyay qaabka mashruuca OpenVisualCloud, kaas oo sidoo kale horumariya SVT-HEVC iyo SVT-VP9. Koodhka waxa lagu qaybiyaa shatiga BSD.
Si loo isticmaalo SVT-AV1, processor x86_64 oo taageero u ah tilmaamaha AVX2 ayaa loo baahan yahay. Codaynta 10-bit AV1 durdurrada tayada 4K waxay u baahan tahay 48 GB RAM, 1080p - 16 GB, 720p - 8 GB, 480p - 4 GB. Sababtoo ah kakanaanta algorithms-yada loo isticmaalo AV1, codaynta qaabkani waxay u baahan tahay ilo aad uga badan qaababka kale, taas oo aan u oggolaan isticmaalka heerka AV1 code-ka beddelka waqtiga-dhabta ah. Tusaale ahaan, kaydiyaha kaydka ee mashruuca AV1 wuxuu u baahan yahay 5721, 5869 iyo 658 jeer xisaabin ka badan marka la barbar dhigo x264 ("profile" ugu weyn), x264 ("sare" profile) iyo libvpx-vp9 encoders.
Waxaa ka mid ah isbeddelada sii deynta cusub ee SVT-AV1:
- Waxyeellada tayada/xawaaraha ayaa la hagaajiyay, taas oo keentay in presets M1-M5 lagu dedejiyo 15-30%, iyo presets M6-M13 1-3%.
- Waxaa lagu daray preset MR cusub (--preset -1) kaas oo lagu tiriyo inuu bixiyo tayada tixraaca.
- Hawlgalka presets M8-M13 ee qaabka codaynta daahsoon ee hooseeya waa la hagaajiyay.
- Taageero lagu daray xulashada firfircoon ee qaab-dhismeedka saadaasha isbeddelka kala sareynta "miniGOP" (Kooxda Sawirrada) ee qaabaynta gelitaanka random, oo si toos ah ugu suurtagelinaya hor-u-samaynta ilaa iyo ay ku jirto M9. Waxa kale oo suurtogal ah in la cayimo cabbir yar oo miniGOP ah oo bilaw ah si loo dedejiyo rarista hore.
- Awoodda lagu beddelayo qodobbada cabbiraadda lambda ee khadka taliska ayaa la bixiyaa.
- Plugin-ka gstreamer dib ayaa loo qoray
- Lagu daray awoodda lagu dhaafi karo tiro go'an oo fiimyada ka hor inta aan la bilaabin codaynta.
- Nadiifin mug leh oo doorsoomayaal aan la isticmaalin iyo hawlo taagan ayaa la fuliyay, faallooyinka koodka ayaa dib loo habeeyey. Baaxadda magacyada doorsoomayaasha waa la dhimay si koodhka loogu fududeeyo akhrinta.
Source: opennet.ru