{"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\/sv\/blog\/news\/kodek-av2-prodemonstriroval-snizhenie-bitrejta-na-30-pri-urovne-kachestva-av1","title":{"rendered":"AV2-codec har visat en minskning av bitrate med 30% vid kvalitetsniv\u00e5 som motsvarar AV1.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

P\u00e5 QoMEX (Quality of Multimedia Experience) konferensen presenterades resultaten av tester av videokodningsformatet AV2, som utvecklas av Open Media Alliance (AOMedia) och som ers\u00e4tter formatet AV1. Genom att anv\u00e4nda kvalitetsbed\u00f6mningsmetoderna VMAF (Video Multi-Method Assessment Fusion), utvecklade av Netflix, har anv\u00e4ndningen av AV2-kodeken lett till en minskning av bithastigheten med 32,59 % j\u00e4mf\u00f6rt med AV1 vid samma kvalitetsniv\u00e5. N\u00e4r PSRN-YUV (Peak-Signal-to-Noise Ratio 14:1:1) anv\u00e4ndes lyckades bithastigheten minskas med 28,63 %. Tester utf\u00f6rdes med version AVM 11.0 och en referensimplementation av AV2.

\"AV2-codec<\/center> <\/p>\n

Videokodningsformatet AV2 kr\u00e4ver inga licensavgifter och g\u00f6r det m\u00f6jligt att kostnadsfritt anv\u00e4nda relaterad teknologi, patent och immateriell egendom. AV2:s funktioner inkluderar: optimering f\u00f6r anv\u00e4ndning i str\u00f6mmande s\u00e4ndningar; betydande f\u00f6rb\u00e4ttringar j\u00e4mf\u00f6rt med AV1 av effektiviteten vid komprimering; ut\u00f6kat st\u00f6d f\u00f6r virtuella och f\u00f6rst\u00e4rkta verkligheter; st\u00f6d f\u00f6r ett bredare spektrum av visuell kvalitet; m\u00f6jlighet att leverera flera videor samtidigt i en enda videostr\u00f6m med st\u00f6d f\u00f6r separata visningar p\u00e5 sk\u00e4rmen.

\"AV2-codec<\/center> <\/p>\n

AV2 forts\u00e4tter att anv\u00e4nda en hybrid blockorienterad struktur, men till skillnad fr\u00e5n AV1 st\u00f6djer den st\u00f6rre superblock p\u00e5 256×256, helt rekursiv partitionering och mer effektiv uppdelning av ljusstyrka och f\u00e4rginformation. I AV2 anv\u00e4nds en enhetlig exponentiell kvantisator som t\u00e4cker ett bredare ljusstyrkeomr\u00e5de och ger st\u00f6rre kvantiseringsnoggrannhet f\u00f6r 8-, 10- och 12-bitars video, samt b\u00e4ttre hantering av l\u00e5ga bitrate. <\/p>\n

M\u00f6jligheterna f\u00f6r att f\u00f6ruts\u00e4ga mellanbildsf\u00f6r\u00e4ndringar har utvidgats, vilket b\u00e4ttre modellerar f\u00f6r\u00e4ndringar i ljusstyrka och f\u00e4rg, tar h\u00e4nsyn till upp till 7 f\u00f6reg\u00e5ende bilder vid modellering, st\u00f6djer tidsm\u00e4ssig interpolation och hanterar b\u00e4ttre r\u00f6relse i video med h\u00f6g uppl\u00f6sning eller snabbt f\u00f6r\u00e4ndrat inneh\u00e5ll. Till\u00e4gg av extra filter f\u00f6r att undertrycka brus, minska artefakter fr\u00e5n komprimering och bevara detaljer. Det noteras att arbetet med AV2-kodeken och dess referensimplementation redan \u00e4r avslutat, men specifikationen m\u00e5ste fortfarande finjusteras, och den slutliga versionen planeras att publiceras i slutet av \u00e5ret.

\r\n \"Spela\r\n
<\/div>\r\n <\/div><\/center>
\n
K\u00e4lla: 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\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\udd47Kodexen AV2 har visat en minskning av bitrate med 30% vid kvalitetsniv\u00e5 AV1 | ProHoster","description":"P\u00e5 konferensen QoMEX (Quality of Multimedia Experience) presenterades i en av f\u00f6redragen resultaten av tester av videokodningsformatet AV2, som utvecklas av Open Media-alliansen (AOMedia) och som ska ers\u00e4tta det nuvarande 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