{"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\/sk\/blog\/news\/kodek-av2-prodemonstriroval-snizhenie-bitrejta-na-30-pri-urovne-kachestva-av1","title":{"rendered":"K\u00f3d AV2 preuk\u00e1zal zn\u00ed\u017eenie bitratu o 30 % pri kvalite AV1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Na konferencii QoMEX (Quality of Multimedia Experience) boli v jednom z refer\u00e1tov predstaven\u00e9 v\u00fdsledky testovania form\u00e1tu k\u00f3dovania videa AV2, ktor\u00fd vyv\u00edja aliancia Open Media (AOMedia) a nahr\u00e1dza form\u00e1t AV1. Pri hodnoten\u00ed pomocou metriky VMAF (Video Multi-Method Assessment Fusion) vyvinutej spolo\u010dnos\u0165ou Netflix sa podarilo pomocou k\u00f3dovania AV2 dosiahnu\u0165 zn\u00ed\u017eenie bitratu o 32,59 % v porovnan\u00ed s k\u00f3dovan\u00edm AV1 pri rovnakom \u00farovni kvality. Pri pou\u017eit\u00ed metriky PSNR-YUV (Peak-Signal-to-Noise Ratio 14:1:1) sa bitrat podarilo zn\u00ed\u017ei\u0165 o 28,63 %. Pri testovan\u00ed bola pou\u017eit\u00e1 verzia AVM 11.0 s referen\u010dnou implement\u00e1ciou AV2.

\"K\u00f3d<\/center> <\/p>\n

Form\u00e1t k\u00f3dovania videa AV2 si nevy\u017eaduje licen\u010dn\u00e9 poplatky a umo\u017e\u0148uje bezodplatn\u00e9 pou\u017e\u00edvanie s\u00favisiacich technol\u00f3gi\u00ed, patentov a du\u0161evn\u00e9ho vlastn\u00edctva. Hlavn\u00e9 vlastnosti AV2: optimaliz\u00e1cia pre streamovanie; v\u00fdrazn\u00e9 zlep\u0161enie v\u00fdkonu kompresie v porovnan\u00ed s AV1; roz\u0161\u00edren\u00e1 podpora pre virtu\u00e1lnu a roz\u0161\u00edren\u00fa realitu; podpora \u0161ir\u0161ieho rozsahu vizu\u00e1lnej kvality; mo\u017enos\u0165 s\u00fa\u010dasn\u00e9ho prenosu viacer\u00fdch vide\u00ed v r\u00e1mci jedn\u00e9ho video streamu s podporou ich oddelen\u00e9ho zobrazenia na obrazovke.

\"K\u00f3d<\/center> <\/p>\n

AV2 pokra\u010duje v pou\u017e\u00edvan\u00ed hybridnej blokovo orientovanej \u0161trukt\u00fary, ale na rozdiel od AV1 podporuje v\u00e4\u010d\u0161ie superbloky 256\u00d7256, plne rekurz\u00edvne sekcionovanie (partitioning) a efekt\u00edvnej\u0161ie rozdelenie parametrov jasu a farby. AV2 vyu\u017e\u00edva jednotn\u00fd exponenci\u00e1lny kvantiz\u00e9r, ktor\u00fd pokr\u00fdva \u0161ir\u0161\u00ed rozsah jasu a zais\u0165uje v\u00e4\u010d\u0161iu presnos\u0165 kvantiz\u00e1cie pre 8-, 10- a 12-bitov\u00e9 video, ako aj lep\u0161ie riadenie pri n\u00edzkych bitov\u00fdch r\u00fdchlostiach. <\/p>\n

Roz\u0161\u00edren\u00e9 mo\u017enosti predikcie medzi r\u00e1mcov\u00fdmi zmenami, ktor\u00e9 lep\u0161ie modeluj\u00fa zmenu jasu a farebnosti, zoh\u013ead\u0148uj\u00fa pri zostavovan\u00ed modelu a\u017e 7 predch\u00e1dzaj\u00facich sn\u00edmok, podporuj\u00fa \u010dasov\u00fa interpol\u00e1ciu a lep\u0161ie spracov\u00e1vaj\u00fa pohyb vo videu s vysok\u00fdm rozl\u00ed\u0161en\u00edm alebo r\u00fdchlo sa meniacim obsahom. Pridan\u00e9 \u010fal\u0161ie filtre na potla\u010denie \u0161umu, zn\u00ed\u017eenie artefaktov z kompresie a zachovanie detailov. Pr\u00e1ca na kodeku AV2 a jeho referen\u010dnej implement\u00e1cii je u\u017e dokon\u010den\u00e1, av\u0161ak zost\u00e1va doladi\u0165 \u0161pecifik\u00e1ciu, fin\u00e1lnu verziu ktorej pl\u00e1nuj\u00fa zverejni\u0165 na konci roka.

\r\n \"Prehrajte\r\n
<\/div>\r\n <\/div><\/center>
\n
Zdroj: 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\udd47Kodek AV2 preuk\u00e1zal zn\u00ed\u017eenie bitratu o 30% pri \u00farovni kvality AV1 | ProHoster","description":"Na konferencii QoMEX (Quality of Multimedia Experience) boli v jednom z pr\u00edspevkov predstaven\u00e9 v\u00fdsledky testovania form\u00e1tu k\u00f3dovania videa AV2, vyv\u00edjan\u00e9ho alianciou Open Media (AOMedia) a nahr\u00e1dzaj\u00faceho existuj\u00faci 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