{"id":184097,"date":"2026-11-02T23:40:40","date_gmt":"2026-11-02T21:40:40","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/vypusk-svt-av1-4-3-0-kodirovshhika-dlya-formata-video-av1"},"modified":"2026-11-02T23:40:47","modified_gmt":"2026-11-02T21:40:47","slug":"svt-av1-4-3-0-av1-video-encoder-released","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/svt-av1-4-3-0-av1-video-encoder-released","title":{"rendered":"Izdaja SVT-AV1 4.3.0, kodirnika za format videa AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Objavljeno je izdanje SVT-AV1 biblioteke 4.3.0 (Scalable Video Technology AV1) sa implementacijama enkodera i dekodera za AV1 video format, za \u010diju je akceleraciju iskori\u0161\u0107ena hardverska paralelizacija prisutna na x86_64 i ARM procesorima. Projekat je stvoren od strane Intela u partnerstvu sa Netflix-om s ciljem postizanja nivoa performansi pogodnog za dekodiranje videa u realnom vremenu i apliciranje u servisima za video na zahtev (VOD). Razvoj se trenutno sprovodi pod okriljem Open Media alijanse (AOMedia), koja nadgleda razvoj AV1 video formata. Prethodni razvoj se odvijao u okviru OpenVisualCloud projekta, koji tako\u0111e razvija SVT-HEVC i SVT-VP9 enkodere. Kod se distribuira pod BSD licencom. <\/p>\n<p>SVT-AV1 je mo\u017eno sestaviti za sisteme, ki temeljijo na vseh arhitekturah, za katere je na voljo prevajalnik, ki podpira standard C99, vendar se najbolj\u0161a zmogljivost dose\u017ee na sistemih x86_64, kjer so uporabljene optimizacije v assemblerju na osnovi SIMD navodil (za\u017eeleno je, da CPU podpira AVX2, vendar je za minimum zadostna tudi SSE2). Poraba pomnilnika je odvisna od \u0161tevila procesorskih jeder, ki jih lahko uporabimo pri kodiranju, kar je mogo\u010de regulirati z opcijo &#171;&#8212;lp&#187;. Zaradi zapletenosti algoritmov, uporabljenih v AV1, kodiranje tega formata zahteva bistveno ve\u010d virov kot drugi formati. <\/p>\n<p>Me\u0111u promenama u novom izdanju SVT-AV1:<\/p>\n<ul>\n<li class=\"l\"> Izvedena je bila optimizacija kompromisov med kakovostjo in hitrostjo za vse prednastavitve, kar je omogo\u010dilo zni\u017eanje obremenitve CPU za 5-8% pri ohranjanju iste ravni kakovosti, pa tudi skraj\u0161anje \u010dasa kodiranja za 10-11% v ve\u010dnitnem na\u010dinu. Pospe\u0161eni so bili postopki izklju\u010ditve neu\u010dinkovitih na\u010dinov kodiranja (MD &#8212; Odlo\u010ditev o na\u010dinu), izra\u010duna premikov (MV &#8212; Premik predstave) in parametrov filtrov med kodiranjem, izra\u010dun velikosti frekven\u010dnih koeficientov, iskanje subpikselnih premikov, kopiranje blokov ter zavra\u010danje odve\u010dnih podrobnosti z algoritmom RDOQ (Kvantizacija optimizirana s hitrostjo-in-izkrivljenjem). V ve\u010dnitnem na\u010dinu se za var\u010devanje z viri algoritem za dolo\u010danje pretvorbe vsebine zaslona zdaj uporablja le za I-okvire.\n<li class=\"l\"> Dodana je bila eksperimentalna zastavica &#171;&#8212;fast-decode 3&#187; za pospe\u0161itev dekodiranja stati\u010dnih slik.\n<li class=\"l\"> Dodana je bila zastavica &#171;&#8212;fgs-table&#187;, ki omogo\u010da podporo za tabele zrnastosti (film grain), in API FILM_GRAIN_EVENT za dolo\u010danje parametrov zrnastosti v povezavi s kadri.\n<li class=\"l\"> Pove\u0107ana je brzina kodiranja bez gubitaka.\n<li class=\"l\"> U na\u010dinu kodiranja s niskim ka\u0161njenjem implementirano je paralelno procesiranje blokova (tile).\n<li class=\"l\"> Dodana je bila mo\u017enost &#171;max_allowed_consecutive_frames_skips&#187; za nastavitev preskakovanja kadrov v na\u010dinu ohranjanja konstantne bitne hitrosti (CBR).\n<li class=\"l\"> Dodan je parameter &#171;max_hierarchical_levels&#187; za upravljanje s skladi\u0161\u010dem predpomnilnikov, ki se uporablja pri spreminjanju velikosti skupin vmesnih kadrov (mini-GOP &#8212; Skupina slik).\n<li class=\"l\"> Dodana je bila opcija za sestavljanje &#171;&#8212;mobile-build&#187; (v CMake &#8212; MOBILE_BUILD) za ustvarjanje 8-bitne knji\u017enice za RTC, VOD in AVIF. Dodane so opcije CONFIG_ENABLE_*, da se onemogo\u010di sestavljanje neuporabljalih orodij za kodiranje.\n<li class=\"l\"> Za x86 sisteme implementirani su 8-bitni procesori CDEF bazirani na AVX2 i SSE4.1 instrukcijama, kao i 16-bitne direktne transformacije bazirane na AVX2 i AVX-512 instrukcijama. Dodan je optimizovani kod za me\u0111ufrejmsko predvi\u0111anje, rad s paletama i transformacije, koriste\u0107i SSE4.1 instrukcije. Optimizovani su procesori za kvantizaciju, kopiranje blokova, izra\u010dunavanje izobli\u010denja i procjenu subpikselnih razlika.\n<li class=\"l\"> Za ARM sisteme dodate su varijante procesora, ubrzane uz pomo\u0107 procesorskih instrukcija Neon.\n<\/ul>\n<p>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66596\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 SVT-AV1 4.3.0 (Scalable Video Technology AV1) c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1, \u0434\u043b\u044f \u0443\u0441\u043a\u043e\u0440\u0435\u043d\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u044b \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 x86_64 \u0438 ARM \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0440\u0430\u0441\u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u0438\u0432\u0430\u043d\u0438\u044f \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439. \u041f\u0440\u043e\u0435\u043a\u0442 \u0441\u043e\u0437\u0434\u0430\u043d \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Intel \u0432 \u043f\u0430\u0440\u0442\u043d\u0451\u0440\u0441\u0442\u0432\u0435 \u0441 Netflix \u0441 \u0446\u0435\u043b\u044c\u044e \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u044f \u0443\u0440\u043e\u0432\u043d\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e \u043d\u0430 \u043b\u0435\u0442\u0443 \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184097","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 SVT-AV1 4.3.0 (Scalable Video Technology AV1) c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 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\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 SVT-AV1 4.3.0 (Scalable Video Technology AV1) c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1, \u0434\u043b\u044f \u0443\u0441\u043a\u043e\u0440\u0435\u043d\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u044b \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0432 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