{"id":144783,"date":"2025-10-11T11:12:05","date_gmt":"2025-10-11T09:12:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kodek-av2-prodemonstriroval-snizhenie-bitrejta-na-30-pri-urovne-kachestva-av1"},"modified":"2025-10-11T11:12:05","modified_gmt":"2025-10-11T09:12:07","slug":"kodek-av2-prodemonstriroval-snizhenie-bitrejta-na-30-pri-urovne-kachestva-av1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/kodek-av2-prodemonstriroval-snizhenie-bitrejta-na-30-pri-urovne-kachestva-av1","title":{"rendered":"Codecul AV2 a demonstrat o reducere a bitrate-ului de 30% la nivelul de calitate AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

La conferin\u021ba QoMEX (Calitatea Experien\u021bei Multimedia), unul dintre prezent\u0103ri a fost dedicat rezultatelor test\u0103rii formatului de codificare video AV2, dezvoltat de alian\u021ba Open Media (AOMedia) \u0219i menit s\u0103 \u00eenlocuiasc\u0103 formatul AV1. Folosind metricile de evaluare a calit\u0103\u021bii VMAF (Video Multi-Method Assessment Fusion), dezvoltate de Netflix, utilizarea codec-ului AV2 a permis o reducere a bitrate-ului cu 32,59% comparativ cu codec-ul AV1 la un nivel similar de calitate. Prin utilizarea metricilor PSRN-YUV (Peak-Signal-to-Noise Ratio 14:1:1), s-a reu\u0219it reducerea bitrate-ului cu 28,63%. Testarea a fost realizat\u0103 cu versiunea AVM 11.0 folosind implementarea de referin\u021b\u0103 AV2.

\"Codecul<\/center> <\/p>\n

Formatul de codificare video AV2 nu necesit\u0103 pl\u0103\u021bi de licen\u021b\u0103 \u0219i permite utilizarea gratuit\u0103 a tehnologiilor, brevetelor \u0219i propriet\u0103\u021bii intelectuale asociate. Caracteristicile AV2 includ: optimizarea pentru utilizarea \u00een streaming; \u00eembun\u0103t\u0103\u021biri semnificative \u00een compara\u021bie cu AV1 \u00een ceea ce prive\u0219te performan\u021ba compresiei; suport extins pentru realitatea virtual\u0103 \u0219i augmentat\u0103; suport pentru un interval mai larg de calitate vizual\u0103; capacitatea de a livra simultan mai multe videoclipuri \u00een cadrul unui singur flux video cu suport pentru afi\u0219area lor separat\u0103 pe ecran.

\"Codecul<\/center> <\/p>\n

AV2 continu\u0103 s\u0103 utilizeze o structur\u0103 hibrid\u0103 bazat\u0103 pe blocuri, dar spre deosebire de AV1, suport\u0103 superblocuri mai mari de 256×256, partajare complet recursiv\u0103 (partitioning) \u0219i o separare mai eficient\u0103 a parametrilor de luminozitate \u0219i cromaticitate. \u00cen AV2 este utilizat un cuantizator exponen\u021bial unificat, care acoper\u0103 o gam\u0103 mai larg\u0103 de luminozitate \u0219i ofer\u0103 o mai mare precizie a cuantiz\u0103rii pentru video de 8, 10 \u0219i 12 bi\u021bi, gestion\u00e2nd de asemenea mai bine bitrate-urile reduse. <\/p>\n

Func\u021bionalit\u0103\u021bile de predic\u021bie a modific\u0103rilor intercadru au fost extinse, model\u00e2nd mai bine schimb\u0103rile de luminozitate \u0219i cromatic\u0103, \u021bin\u00e2nd cont la construirea modelului de p\u00e2n\u0103 la 7 cadre anterioare, sus\u021bin\u00e2nd interpolarea temporal\u0103 \u0219i proces\u00e2nd mai bine mi\u0219carea \u00een videoclipuri cu rezolu\u021bie \u00eenalt\u0103 sau con\u021binut rapid schimb\u0103tor. Au fost ad\u0103ugate filtre suplimentare pentru reducerea zgomotului, diminuarea artefactelor de compresie \u0219i p\u0103strarea detaliilor. Se men\u021bioneaz\u0103 c\u0103 munc\u0103 asupra codec-ului AV2 \u0219i a implement\u0103rii sale de referin\u021b\u0103 a fost finalizat\u0103, dar r\u0103m\u00e2ne de rafinat specifica\u021bia, varianta final\u0103 urm\u00e2nd a fi publicat\u0103 c\u0103tre sf\u00e2r\u0219itul anului.

\r\n \"Reda\u021bi\r\n
<\/div>\r\n <\/div><\/center>
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 QoMEX (Quality of Multimedia Experience) \u0432 \u043e\u0434\u043d\u043e\u043c \u0438\u0437 \u0434\u043e\u043a\u043b\u0430\u0434\u043e\u0432 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV2, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u0430\u043b\u044c\u044f\u043d\u0441\u043e\u043c Open Media (AOMedia) \u0438 \u0438\u0434\u0443\u0449\u0435\u0433\u043e \u043d\u0430 \u0441\u043c\u0435\u043d\u0443 \u0444\u043e\u0440\u043c\u0430\u0442\u0443 AV1. \u041f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043c\u0435\u0442\u0440\u0438\u043a \u043e\u0446\u0435\u043d\u043a\u0438 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 VMAF (Video Multi-Method Assessment Fusion), \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u044b\u0445 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Netflix, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043a\u043e\u0434\u0435\u043a\u0430 AV2 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u043b\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044f \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u0430 \u043d\u0430 32.59% \u043f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u043a\u043e\u0434\u0435\u043a\u043e\u043c […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":144784,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-144783","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Codec-ul AV2 a demonstrat o reducere a bitrate-ului cu 30% la un nivel de calitate AV1 | ProHoster","description":"La conferin\u021ba QoMEX (Quality of Multimedia Experience), \u00eentr-una dintre prezent\u0103ri, au fost prezentate rezultatele test\u0103rii formatului de codare video AV2, dezvoltat de alina\u021ba Open Media (AOMedia) \u0219i care \u00eenlocuie\u0219te formatul 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