{"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\/sk\/blog\/news\/svt-av1-4-3-0-av1-video-encoder-released","title":{"rendered":"Vydanie SVT-AV1 4.3.0, k\u00f3dova\u010da pre form\u00e1t videa AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bol prelo\u017een\u00fd vydanie kni\u017enice SVT-AV1 4.3.0 (Scalable Video Technology AV1) s implement\u00e1ciami kod\u00e9ra a dekod\u00e9ra form\u00e1tu k\u00f3dovania videa AV1, pre ktor\u00e9 s\u00fa vyu\u017eit\u00e9 v procesoroch x86_64 a ARM pr\u00edtomn\u00e9 roz\u0161\u00edrenia na hardv\u00e9rov\u00e9 paralelizovanie v\u00fdpo\u010dtov. Projekt bol vytvoren\u00fd spolo\u010dnos\u0165ou Intel v spolupr\u00e1ci s Netflixom s cie\u013eom dosiahnu\u0165 \u00farove\u0148 v\u00fdkonu vhodn\u00fa na k\u00f3dovanie videa v re\u00e1lnom \u010dase a na aplik\u00e1cie v slu\u017eb\u00e1ch na vy\u017eiadanie (VOD). V s\u00fa\u010dasnosti sa v\u00fdvoj uskuto\u010d\u0148uje pod z\u00e1\u0161titou aliancie Open Media (AOMedia), ktor\u00e1 dohliada na rozvoj form\u00e1tu k\u00f3dovania videa AV1. Predt\u00fdm sa projekt rozv\u00edjal v r\u00e1mci projektu OpenVisualCloud, ktor\u00fd taktie\u017e vyv\u00edja kod\u00e9ry SVT-HEVC a SVT-VP9. K\u00f3d je \u0161\u00edren\u00fd pod licenciou BSD. <\/p>\n<p>SVT-AV1 m\u00f4\u017ee by\u0165 zostaven\u00fd pre syst\u00e9my zalo\u017een\u00e9 na ak\u00fdchko\u013evek architekt\u00farach, pre ktor\u00e9 je k dispoz\u00edcii preklada\u010d s podporou \u0161tandardu C99, ale najlep\u0161ie v\u00fdkony s\u00fa dosahovan\u00e9 na syst\u00e9moch x86_64, kde s\u00fa vyu\u017e\u00edvan\u00e9 optimaliz\u00e1cie assembleru zalo\u017een\u00e9 na in\u0161trukci\u00e1ch SIMD (ide\u00e1lne je, aby CPU podporovalo AVX2, ale minim\u00e1lne sta\u010d\u00ed aj SSE2). Spotreba pam\u00e4te z\u00e1vis\u00ed od po\u010dtu procesorov\u00fdch jadier zapojen\u00fdch do k\u00f3dovania, ktor\u00e9 s\u00fa regulovan\u00e9 vo\u013ebou &#171;&#8212;lp&#187;. Z d\u00f4vodu zlo\u017eitosti aplikovan\u00fdch algoritmov vo form\u00e1te AV1 vy\u017eaduje k\u00f3dovanie tohto form\u00e1tu v\u00fdrazne viac zdrojov ako in\u00e9 form\u00e1ty. <\/p>\n<p>Medzi zmenami v novom vydan\u00ed SVT-AV1:<\/p>\n<ul>\n<li class=\"l\"> Optimaliz\u00e1cia kompromisu kvalita\/r\u00fdchlos\u0165 pre v\u0161etky predvo\u013eby umo\u017enila zn\u00ed\u017ei\u0165 za\u0165a\u017eenie CPU o 5-8% pri zachovan\u00ed rovnak\u00e9ho levelu kvality, ako aj skr\u00e1ti\u0165 \u010das k\u00f3dovania o 10-11% pri viacvl\u00e1knovom re\u017eime. Ur\u00fdchlili sa oper\u00e1cie vyl\u00fa\u010denia neefekt\u00edvnych re\u017eimov k\u00f3dovania (MD &#8212; Rozhodovanie o re\u017eime), v\u00fdpo\u010dtu pohybliv\u00fdch vektorov (MV &#8212; Pohybliv\u00fd vektor) a parametrov filtrov po\u010das k\u00f3dovania, v\u00fdpo\u010dtu ve\u013ekosti frekven\u010dn\u00fdch koeficientov, h\u013eadania subpixelov\u00fdch posunov, kop\u00edrovania blokov a odstra\u0148ovania zbyto\u010dn\u00fdch detailov pomocou algoritmu RDOQ (Optimizovan\u00e1 kvantiz\u00e1cia na z\u00e1klade miery a de\u0161trukcie). V viacvl\u00e1knovom re\u017eime sa teraz na \u00fasporu zdrojov algoritmus ur\u010dovania transl\u00e1cie obsahu obrazovky aplikuje iba na I-sn\u00edmky.\n<li class=\"l\"> Pridan\u00e1 experiment\u00e1lna vo\u013eba &#171;&#8212;fast-decode 3&#187; na zr\u00fdchlenie dek\u00f3dovania statick\u00fdch obr\u00e1zkov.\n<li class=\"l\"> Pridan\u00e1 vo\u013eba &#171;&#8212;fgs-table&#187;, ktor\u00e1 umo\u017e\u0148uje podporu tabuliek zrnitosti (film grain), a API FILM_GRAIN_EVENT na nastavenie parametrov zrnitosti viazan\u00fdch na sn\u00edmky.\n<li class=\"l\"> Zv\u00fd\u0161en\u00e1 r\u00fdchlos\u0165 k\u00f3dovania bez straty kvality.\n<li class=\"l\"> V re\u017eime k\u00f3dovania s n\u00edzkou latenciou bola implementovan\u00e1 paraleliz\u00e1cia spracovania blokov (tile).\n<li class=\"l\"> Pridan\u00e1 mo\u017enos\u0165 &#171;max_allowed_consecutive_frames_skips&#187; na nastavenie preskakovania sn\u00edmok v re\u017eime udr\u017eiavania kon\u0161tantn\u00e9ho bitrate (CBR).\n<li class=\"l\"> Pridan\u00fd parameter &#171;max_hierarchical_levels&#187; na riadenie z\u00e1sobn\u00edka bufferov pou\u017e\u00edvan\u00e9ho pri zmene ve\u013ekosti skup\u00edn medziobr\u00e1zkov (mini-GOP &#8212; Skupina obr\u00e1zkov).\n<li class=\"l\"> Pridan\u00e1 kon\u0161truk\u010dn\u00e1 vo\u013eba &#171;&#8212;mobile-build&#187; (v CMake &#8212; MOBILE_BUILD) na vytvorenie 8-bitovej kni\u017enice pre RTC, VOD a AVIF. Pridan\u00e9 mo\u017enosti CONFIG_ENABLE_* na vypnutie zostavovania nepou\u017e\u00edvan\u00fdch k\u00f3dovac\u00edch n\u00e1strojov.\n<li class=\"l\"> Pre syst\u00e9my x86 s\u00fa implementovan\u00e9 8-bitov\u00e9 spracovate\u013esk\u00e9 moduly CDEF zalo\u017een\u00e9 na pokynoch AVX2 a SSE4.1, ako aj 16-bitov\u00e9 priam\u00e9 transform\u00e1cie zalo\u017een\u00e9 na pokynoch AVX2 a AVX-512. Bol pridan\u00fd optimalizovan\u00fd k\u00f3d pomocou pokynov SSE4.1 pre predikciu medzi r\u00e1mcami, pr\u00e1cu s paletami a transform\u00e1cie. Optimalizovali sa spracovatelia pre kvantiz\u00e1ciu, kop\u00edrovanie blokov, v\u00fdpo\u010dty deform\u00e1ci\u00ed a hodnotenie subpixelov\u00fdch rozdielov.\n<li class=\"l\"> Pre syst\u00e9my ARM boli pridan\u00e9 varianty spracovate\u013eov zr\u00fdchlen\u00e9 pomocou procesorov\u00fdch pokynov Neon.\n<\/ul>\n<p>Zdroj: <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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