Al'ummomin VideoLAN da FFmpeg sun sanar da kwanan nan bugu na uku version (0.3) daga laburaren dav1d tare da aiwatar da madadin kyautar AV1 tsarin tsara bidiyo mai sauyawa.
Laburaren dav1d yana goyan bayan duk fasalulluka na AV1, gami da nau'ikan ƙaramar juzu'i da sifofi saitin zurfin launi da aka saita a cikin ƙayyadaddun (8, 10 da 12 bit).
An gwada aikin ɗakin ɗakin karatu a kan ɗakunan tarin fayiloli a cikin sigar AV1. Babban fasalin dav1d shine mai da hankali kan cimma nasarar mafi girman aiki dikodi da tabbatar da aiki mai inganci a cikin hanyar da yawa.
An rubuta lambar aikin a cikin C (C99) tare da abubuwan haɗa abubuwa (NASM / GAS) kuma an rarraba ta ƙarƙashin lasisin BSD.
Vide Codeco AV1 ta haɓaka Open Media Alliance. (AOMedia), wanda kamfanoni kamar su Mozilla, Google, Microsoft, Intel, ARM, NVIDIA, IBM, Cisco, Amazon, Netflix, AMD, VideoLAN, CCN da Realtek suke wakilta.
AV1 an sanya shi azaman tsarin samar da damar bidiyo kyauta wanda baya buƙatar biyan kuɗi, wanda yafi fifiko akan H.264 da VP9 dangane da matsi.
Don cikakken kewayon shawarwarin da aka gwada, a kan matsakaita AV1 yana ba da matakin ƙira iri ɗaya yayin rage ƙwanƙwasa da 13% idan aka kwatanta da VP9 kuma da 17% idan aka kwatanta da HEVC.
A farashi mai tsada, ribar tana ƙaruwa zuwa 22-27% na VP9 kuma har zuwa 30-43% don HEVC. A cikin gwaje-gwajen Facebook, AV1 ya zarta babban bayanin H.264 (x264) da kashi 50.3%, babban martanin H.264 da kashi 46.2%, da VP9 (libvpx-vp9) da 34.0%.
Menene sabo a cikin wannan sigar?
Tare da fitowar wannan sabon sigar mai rikodin, an kara daban-daban ƙarin ingantawa don hanzarta dikodi mai na video ta amfani da umarnin SSSE3, SSE4.1 da AVX2.
Tare da shi saurin dikodi akan masu sarrafa SSSE3 ya karu da 24%, kuma a cikin tsarin tare da AVX2 da 4%
Codeara lambar tarawa don hanzari ta amfani da umarnin SSE4.1, wanda yin amfani da shi ya haɓaka aiki da 26% idan aka kwatanta da sigar da ba ta inganta ba (idan aka kwatanta da ingantawa dangane da umarnin SSSE3, ribar 1,5%).
Bugu da kari, aikin dikodi da aka kara akan na'urorin hannu tare da masu sarrafawa bisa tsarin ARM64.
Godiya ga amfani da ayyukan da ke amfani da umarnin NEON, idan aka kwatanta da na baya, aikin ya ƙaru da kusan 12%.
Idan aka kwatanta da decoder aomdec (libaom), amfanin dav1d ana jin shi sosai yayin aiki a yanayin da yawa (a cikin wasu gwaje-gwaje dav1d ya ninka saurin 2-4). A cikin yanayin layi ɗaya, aiki yana da 10-20% daban.
An sami nasara cikin shiga dav1d a cikin wasu ayyukan. Ta tsoho dav1d yanzu ana amfani dashi a cikin Chromium kuma Chrome 74 da Firefox 67 (A baya an kunna dav1d don Windows, amma yanzu an kunna shi don Linux da macOS.)
Ci gaba da amfani dav1d a cikin FFmpeg da VLC, an tsara miƙa mulki zuwa transcoder na Handbrake transcoder.
Yadda zaka girka decoder dav1d akan Linux?
Ga waɗanda ke da sha'awar iya shigar da wannan dikodi mai a cikin tsarin su, za su iya yin hakan ta bin umarnin da muka raba a ƙasa.
Gabaɗaya don mafi yawan rarraba Linux, mutanen daga aikin Lan, suna bayarwa kunshin dikodi mai kwakwalwa ta hanyar amfani da Karfin Snap.
Sabili da haka, don shigar da shi ta wannan hanyar, kawai yana buƙatar cewa rarraba ku yana da goyan bayan wannan nau'in fakitin.
A cikin tashar kawai suna aiwatar da wannan umarnin:
sudo snap install dav1d --edge
para batun wadanda suke amfani da Arch Linux, Manjaro, Antergos ko wani abin kirki Don Arch Linux, za su iya shigarwa kai tsaye daga wuraren ajiye Arch Linux.
solo ya kamata gudu a cikin m umarni mai zuwa
sudo pacman -S dav1d