{"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\/fr\/blog\/news\/kodek-av2-prodemonstriroval-snizhenie-bitrejta-na-30-pri-urovne-kachestva-av1","title":{"rendered":"Le codec AV2 a d\u00e9montr\u00e9 une r\u00e9duction du bitrate de 30% tout en maintenant la qualit\u00e9 d'AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Lors de la conf\u00e9rence QoMEX (Quality of Multimedia Experience), l'un des expos\u00e9s a pr\u00e9sent\u00e9 les r\u00e9sultats des tests du format de codage vid\u00e9o AV2, d\u00e9velopp\u00e9 par l'alliance Open Media (AOMedia) et destin\u00e9 \u00e0 remplacer le format AV1. En utilisant les m\u00e9triques d'\u00e9valuation de la qualit\u00e9 VMAF (Video Multi-Method Assessment Fusion), \u00e9labor\u00e9es par Netflix, l'utilisation du codec AV2 a permis de r\u00e9duire le bitrate de 32,59 % par rapport au codec AV1 tout en maintenant un niveau de qualit\u00e9 similaire. En utilisant les m\u00e9triques PSRN-YUV (Peak-Signal-to-Noise Ratio 14:1:1), le bitrate a pu \u00eatre r\u00e9duit de 28,63 %. La version test\u00e9e \u00e9tait AVM 11.0 avec une impl\u00e9mentation de r\u00e9f\u00e9rence d'AV2.

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

Le format de codage vid\u00e9o AV2 ne n\u00e9cessite pas de paiements de droits d'auteur et permet d'utiliser gratuitement les technologies, brevets et propri\u00e9t\u00e9s intellectuelles qui y sont associ\u00e9es. Les caract\u00e9ristiques d'AV2 : optimisation pour les applications de diffusion en continu ; am\u00e9lioration significative par rapport \u00e0 AV1 de la performance des op\u00e9rations de compression ; prise en charge \u00e9largie des possibilit\u00e9s pour la r\u00e9alit\u00e9 virtuelle et augment\u00e9e ; support d'une gamme de qualit\u00e9 visuelle plus large ; possibilit\u00e9 de transmission simultan\u00e9e de plusieurs vid\u00e9os dans un m\u00eame flux vid\u00e9o avec prise en charge de leur affichage s\u00e9par\u00e9 \u00e0 l'\u00e9cran.

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

AV2 continue d'utiliser une structure hybride orient\u00e9e blocs, mais contrairement \u00e0 AV1, il prend en charge des superblocs plus grands de 256\u00d7256, un partitionnement enti\u00e8rement r\u00e9cursif et une s\u00e9paration plus efficace des param\u00e8tres de luminosit\u00e9 et de chrominance. AV2 utilise un quantiseur exponentiel unifi\u00e9, couvrant une plus large plage de luminosit\u00e9 et offrant une plus grande pr\u00e9cision de quantification pour les vid\u00e9os 8, 10 et 12 bits, tout en g\u00e9rant mieux les faibles d\u00e9bits binaires. <\/p>\n

Les capacit\u00e9s de pr\u00e9diction des changements entre les images ont \u00e9t\u00e9 \u00e9tendues, mieux mod\u00e9lisant les variations de luminosit\u00e9 et de chromaticit\u00e9, tenant compte jusqu'\u00e0 7 images pr\u00e9c\u00e9dentes lors de la cr\u00e9ation du mod\u00e8le, prenant en charge l'interpolation temporelle et traitant mieux le mouvement dans des vid\u00e9os \u00e0 haute r\u00e9solution ou \u00e0 contenu changeant rapidement. Des filtres suppl\u00e9mentaires ont \u00e9t\u00e9 ajout\u00e9s pour supprimer le bruit, r\u00e9duire les artefacts de compression et pr\u00e9server les d\u00e9tails. Il est not\u00e9 que le travail sur le codec AV2 et sa mise en \u0153uvre de r\u00e9f\u00e9rence est d\u00e9j\u00e0 termin\u00e9, mais il reste \u00e0 peaufiner la sp\u00e9cification, dont la version finale est pr\u00e9vue pour publication \u00e0 la fin de l'ann\u00e9e.

\r\n \"Lire\r\n
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Source : opennet.ru<\/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\udd47 Le codec AV2 a montr\u00e9 une r\u00e9duction du d\u00e9bit binaire de 30 % tout en maintenant la qualit\u00e9 d'AV1 | ProHoster","description":"Lors de la conf\u00e9rence QoMEX (Quality of Multimedia Experience), les r\u00e9sultats des tests du format de codage vid\u00e9o AV2, d\u00e9velopp\u00e9 par l'alliance Open Media (AOMedia) et rempla\u00e7ant le format pr\u00e9c\u00e9dent, ont \u00e9t\u00e9 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\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 AV1 | ProHoster","og:description":"\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 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