Imiphakathi ye-VideoLAN kanye ne-FFmpeg ishicilele ukukhishwa komtapo wezincwadi we-dav1d 1.0.0 ngokuqalisa enye idekhoda yamahhala yefomethi yombhalo wekhodi we-AV1. Ikhodi yephrojekthi ibhalwe ngo-C (C99) nokufaka okuhlanganisiwe (NASM/GAS) futhi isatshalaliswa ngaphansi kwelayisensi ye-BSD. Ukusekelwa kwezakhiwo ze-x86, x86_64, ARMv7 kanye ne-ARMv8, nezinhlelo zokusebenza i-FreeBSD, Linux, Windows, macOS, Android ne-iOS sekwenziwe.
Umtapo wezincwadi we-dav1d usekela zonke izici ze-AV1, okuhlanganisa izinhlobo ezithuthukisiwe zamasampula amancane nawo wonke amapharamitha okulawula ukujula kombala ashiwo ekucacisweni (8, 10 kanye no-12 bits). Ilabhulali ihlolwe eqoqweni elikhulu lamafayela ngefomethi ye-AV1. Isici esibalulekile se-dav1d ukugxila kwayo ekufinyeleleni ukusebenza kokukhipha amakhodi okuphezulu kakhulu nokuqinisekisa umsebenzi wekhwalithi ephezulu ngemodi enemicu eminingi.
Enguqulweni entsha:
- Inhlangano ye-multithreading iklanywe kabusha, okuhlanganisa nokulawula intambo okuzenzakalelayo.
- Kwengezwe amandla okusheshisa izibalo kusetshenziswa imiyalelo yevekhtha ye-AVX-512. Ukuthuthukisa okungezwe ngaphambilini okuthuthukisiwe ngokusekelwe ku-SSE2 nemiyalelo ye-AVX2.
- Kuphakanyiswe i-API entsha ukuze kube lula ukusebenzisa ama-GPU ukuze kusheshiswe.
- Kwengezwe i-API ukuze kutholwe ulwazi mayelana nozimele abanezinkinga ngokukhipha amakhodi.
Ake sikukhumbuze ukuthi i-codec yevidiyo ye-AV1 yakhiwe yi-Open Media Alliance (AOMedia), emele izinkampani ezifana ne-Mozilla, Google, Microsoft, Intel, ARM, NVIDIA, IBM, Cisco, Amazon, Netflix, AMD, VideoLAN, Apple , CCN kanye ne-Realtek. I-AV1 ibekwe njengefomethi yombhalo wekhodi wevidiyo etholakala esidlangalaleni, engakhokhelwa mahhala edlula i-H.264, H.265 (HEVC) ne-VP9 ngokwezinga lokuminyanisa. Kulo lonke ububanzi besinqumo esihloliwe, ngokwesilinganiso i-AV1 iletha izinga elifanayo lekhwalithi kuyilapho yehlisa ama-bitrate ngo-13% uma kuqhathaniswa ne-VP9 kanye no-17% ngaphansi kune-HEVC. Kuma-bitrate aphezulu, inzuzo ikhuphuka ibe ngu-22-27% ye-VP9 futhi iye ku-30-43% ye-HEVC. Ezivivinyweni ze-Facebook, i-AV1 isebenze kahle kakhulu kunephrofayela eyinhloko H.264 (x264) ngo-50.3%, iphrofayili ephezulu H.264 ngo-46.2%, kanye ne-VP9 (libvpx-vp9) ngo-34%.
Source: opennet.ru