{"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\/ro\/blog\/news\/svt-av1-4-3-0-av1-video-encoder-released","title":{"rendered":"Lansarea SVT-AV1 4.3.0, encoder pentru formatul video AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A fost publicat\u0103 versiunea 4.3.0 a bibliotecii SVT-AV1 (Scalable Video Technology AV1) cu implement\u0103ri ale encoder-ului \u0219i decoder-ului pentru formatul de codificare video AV1, care utilizeaz\u0103 extensiile hardware de paralelizare a calculelor disponibile \u00een procesoarele x86_64 \u0219i ARM pentru a accelera procesul. Proiectul a fost creat de compania Intel \u00een parteneriat cu Netflix, cu scopul de a atinge un nivel de performan\u021b\u0103 adecvat pentru re\u00eencodarea video \u00een timp real \u0219i utilizarea \u00een servicii de livrare video la cerere (VOD). \u00cen prezent, dezvoltarea se desf\u0103\u0219oar\u0103 sub egida alian\u021bei Open Media (AOMedia), care coordoneaz\u0103 evolu\u021bia formatului de codificare video AV1. Anterior, proiectul a fost dezvoltat \u00een cadrul proiectului OpenVisualCloud, care dezvolt\u0103 de asemenea encoderele SVT-HEVC \u0219i SVT-VP9. Codul este distribuit sub licen\u021ba BSD. <\/p>\n<p>SVT-AV1 poate fi compilat pentru sisteme bazate pe orice arhitectur\u0103 pentru care exist\u0103 un compilator care suport\u0103 standardul C99, dar cea mai bun\u0103 performan\u021b\u0103 este ob\u021binut\u0103 pe sisteme x86_64, unde sunt aplicate optimiz\u0103ri \u00een limbaj de asamblare bazate pe instruc\u021biunile SIMD (preferabil cu suport CPU pentru AVX2, dar ca minim\u0103 condi\u021bie e suficient \u0219i SSE2). Consumul de memorie depinde de num\u0103rul de nuclee ale procesorului utilizate pentru codificare, reglate prin op\u021biunea &#171;&#8212;lp&#187;. Datorit\u0103 complexit\u0103\u021bii algoritmilor utiliza\u021bi \u00een AV1, pentru codificarea acestui format sunt necesare mult mai multe resurse comparativ cu alte formate. <\/p>\n<p>Printre modific\u0103rile din noua versiune SVT-AV1:<\/p>\n<ul>\n<li class=\"l\"> Au fost optimizate compromisurile calitate\/rapiditate pentru toate preset\u0103rile, ceea ce a permis reducerea \u00eenc\u0103rc\u0103rii CPU cu 5-8% men\u021bin\u00e2nd acela\u0219i nivel de calitate, precum \u0219i scurtarea timpului de codificare cu 10-11% \u00een modul multi-thread. Au fost accelerate opera\u021biile de excludere a modurilor de codificare ineficiente (MD &#8212; Decizia Modului), calculul vectorilor de mi\u0219care (MV &#8212; Vectorul de Mi\u0219care) \u0219i parametrii filtrelor \u00een timpul codific\u0103rii, calculul dimensiunii coeficientilor de frecven\u021b\u0103, c\u0103utarea de deplas\u0103ri sub-pixeli, copierea blocurilor \u0219i eliminarea detaliilor excesive prin algoritmul RDOQ (Quantizarea Optimizat\u0103 \u00een Func\u021bie de Rata \u0219i Distorziune). \u00cen modul multi-thread, pentru economisirea resurselor, algoritmul de determinare a conturului con\u021binutului ecranului se aplic\u0103 acum doar cadrelor I.\n<li class=\"l\"> A fost ad\u0103ugat un steag experimental &#171;&#8212;fast-decode 3&#187; pentru a accelera decodarea imaginilor statice.\n<li class=\"l\"> A fost ad\u0103ugat stilul &#171;&#8212;fgs-table&#187;, care include suportul pentru tabele cu granula\u021bie (film grain), \u0219i API-ul FILM_GRAIN_EVENT pentru setarea parametrilor de granula\u021bie \u00een func\u021bie de cadre.\n<li class=\"l\"> \u00cembun\u0103t\u0103\u021bit\u0103 viteza de codare f\u0103r\u0103 pierderi.\n<li class=\"l\"> \u00cen modul de codare cu laten\u021b\u0103 sc\u0103zut\u0103, s-a implementat procesarea paralel\u0103 a blocurilor (tile).\n<li class=\"l\"> A fost ad\u0103ugat\u0103 op\u021biunea &#171;max_allowed_consecutive_frames_skips&#187; pentru configurarea omisiunilor de cadre \u00een modul de men\u021binere a unui bit rate constant (CBR).\n<li class=\"l\"> A fost ad\u0103ugat parametrul &#171;max_hierarchical_levels&#187; pentru a controla pool-ul de buffere utilizat la redimensionarea grupurilor de cadre intermediare (mini-GOP &#8212; Group of Pictures).\n<li class=\"l\"> A fost ad\u0103ugat\u0103 op\u021biunea de construire &#171;&#8212;mobile-build&#187; (\u00een CMake &#8212; MOBILE_BUILD) pentru formarea unei biblioteci pe 8 bi\u021bi pentru RTC, VOD \u0219i AVIF. Au fost ad\u0103ugate op\u021biunile CONFIG_ENABLE_* pentru a dezactiva construirea instrumentelor de codare neutilizate.\n<li class=\"l\"> Pentru sistemele x86, au fost implementate procesele CDEF pe 8 bi\u021bi bazate pe instruc\u021biuni AVX2 \u0219i SSE4.1, precum \u0219i transform\u0103rile directe pe 16 bi\u021bi bazate pe instruc\u021biuni AVX2 \u0219i AVX-512. A fost ad\u0103ugat un cod optimizat cu instruc\u021biuni SSE4.1 pentru prezicerea intercadrelor, gestionarea paletelor \u0219i transform\u0103ri. Au fost optimizate procesele pentru cuantificare, copierea blocurilor, calculul distorsiunilor \u0219i estimarea diferen\u021belor sub-pixel.\n<li class=\"l\"> Pentru sistemele ARM, s-au ad\u0103ugat variante de procese accelerate prin instruc\u021biunile de procesor Neon.\n<\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66596\">opennet.ro<\/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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