Ukukhishwa kwe-dav1d 0.6, idekhoda ye-AV1 evela kumaphrojekthi we-VideoLAN kanye ne-FFmpeg

Imiphakathi ye-VideoLAN ne-FFmpeg eshicilelwe ukukhishwa komtapo wezincwadi we-dav1d 0.6.0 ngokusetshenziswa kwesinye isiqophi sefomethi yamahhala yokufaka ikhodi yevidiyo AV1. Ikhodi yephrojekthi ibhalwe ngolimi C (C99) ngokufaka okuhlanganisiwe (NASM/GAS) kanye isatshalaliswa ngu ngaphansi kwelayisensi ye-BSD. Usekelo lwezakhiwo ze-x86, x86_64, ARMv7 kanye ne-ARMv8, kanye ne-Linux, Windows, macOS, Android kanye nezinhlelo zokusebenza ze-iOS ziyasetshenziswa.

Umtapo wezincwadi we-dav1d usekela zonke izici ze-AV1, kuhlanganise nokubukwa okuthuthukile amasampula amancane kanye nawo wonke amapharamitha okulawula ukujula kombala ashiwo ekucacisweni (8, 10 kanye no-12 bits). Ilabhulali ihlolwe eqoqweni elikhulu lamafayela ngefomethi ye-AV1. Isici esiyinhloko se-dav1d ukugxila kwayo ekufinyeleleni ukusebenza kokukhipha amakhodi okuphezulu kakhulu nokuqinisekisa umsebenzi wekhwalithi ephezulu ngemodi enezintambo eziningi.

Enguqulweni entsha:

• Ukuthuthukiswa okuqondene nezakhiwo ezithile ze-ARM64 sekusetshenzisiwe okumboza imisebenzi eminingi lapho kusebenza ngokujula kombala okungu-10- no-12-bit.
• Ukulungiselelwa okungeziwe okusekelwe kumiyalo ye-AVX-512 ye-prep_bilin, prep_8tap, cdef_filter kanye nemisebenzi ye-mc_avg/w_avg/mask.
• Ukulungiselelwa okwengeziwe okusekelwe emiyalweni ye-SSSE3 yokucindezela umsindo wedijithali.
• Ukulungiselelwa okungeziwe okusekelwe kumiyalo ye-AVX2 yomsebenzi we-msac_adapt16.
• Kulungiswe ukungezwani okungajwayelekile ekuziphatheni ngesiqophi serekhodi esingu-AV1;
• Ukulungiselelwa okuthuthukisiwe kwemisebenzi ye-msac, cdef kanye ne-looprestoration ye-ARM64;
• Ukuthuthukiswa kwe-AVX2 okuthuthukisiwe kwe-cdef_filter;
• Ukwenziwa kwemisebenzi ye-itxfm kanye ne-cdef_filter ngolimi C kuthuthukisiwe.

Khumbula ukuthi ikhodekhi yevidiyo AV1 ithuthukiswe umbimbi Vula imidiya (AOMedia), ehlanganisa 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 ne-VP9 ngokwezinga lokuminyanisa. Kulo lonke ububanzi bezinqumo ezihloliwe, 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 yedlule iphrofayili eyinhloko engu-H.264 (x264) ngo-50.3% ngokwezinga lokuminyanisa, iphrofayili ephezulu engu-H.264 ngo-46.2%, kanye ne-VP9 (libvpx-vp9) ngo-34.0%.

Source: opennet.ru