{"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\/hu\/blog\/news\/kodek-av2-prodemonstriroval-snizhenie-bitrejta-na-30-pri-urovne-kachestva-av1","title":{"rendered":"Az AV2 kodek 30%-os bitr\u00e1ta-cs\u00f6kken\u00e9st mutatott az AV1 min\u0151s\u00e9gi szint mellett.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A QoMEX (Quality of Multimedia Experience) konferenci\u00e1n az AV2 videok\u00f3dol\u00e1si form\u00e1tum, amelyet az Open Media Sz\u00f6vets\u00e9g (AOMedia) fejleszt, bemutat\u00e1sra ker\u00fclt. Az AV2 az AV1 form\u00e1tumot v\u00e1ltja fel. A Netflix \u00e1ltal kifejlesztett VMAF (Video Multi-Method Assessment Fusion) min\u0151s\u00e9g\u00e9rt\u00e9kel\u00e9si metrik\u00e1val az AV2 kodek haszn\u00e1lata 32.59%-os bitr\u00e1ta-cs\u00f6kken\u00e9st eredm\u00e9nyezett az AV1-hez k\u00e9pest, hasonl\u00f3 min\u0151s\u00e9gi szinten. A PSRN-YUV (Peak-Signal-to-Noise Ratio 14:1:1) metrik\u00e1k alkalmaz\u00e1s\u00e1val a bitr\u00e1t\u00e1t 28.63%-kal siker\u00fclt cs\u00f6kkenteni. A tesztel\u00e9s sor\u00e1n az AVM 11.0 kiad\u00e1s\u00e1t haszn\u00e1lt\u00e1k, amely az AV2 referenciaimplement\u00e1ci\u00f3j\u00e1t tartalmazza.

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

Az AV2 videok\u00f3dol\u00e1si form\u00e1tum nem ig\u00e9nyel licencd\u00edjat, \u00e9s lehet\u0151v\u00e9 teszi a kapcsol\u00f3d\u00f3 technol\u00f3gi\u00e1k, szabadalmak \u00e9s szellemi tulajdon ingyenes haszn\u00e1lat\u00e1t. Az AV2 saj\u00e1toss\u00e1gai k\u00f6z\u00e9 tartozik: optimaliz\u00e1l\u00e1s a streaming alkalmaz\u00e1sokhoz; jelent\u0151s teljes\u00edtm\u00e9nyjavul\u00e1s az AV1-hez k\u00e9pest a t\u00f6m\u00f6r\u00edt\u00e9si m\u0171veletek ter\u00e9n; kib\u0151v\u00edtett t\u00e1mogat\u00e1s a virtu\u00e1lis \u00e9s kiterjesztett val\u00f3s\u00e1g lehet\u0151s\u00e9geihez; sz\u00e9lesebb vizu\u00e1lis min\u0151s\u00e9gi tartom\u00e1ny t\u00e1mogat\u00e1sa; a lehet\u0151s\u00e9g, hogy t\u00f6bb vide\u00f3t egyetlen videostream keret\u00e9ben sz\u00e1ll\u00edtsunk, lehet\u0151v\u00e9 t\u00e9ve az egyedi megjelen\u00edt\u00e9st a k\u00e9perny\u0151n.

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

Az AV2 tov\u00e1bbra is hibrid blokkorient\u00e1lt strukt\u00far\u00e1t haszn\u00e1l, de az AV1-t\u0151l elt\u00e9r\u0151en t\u00e1mogatja a nagyobb 256×256 m\u00e9ret\u0171 szuperblokkokat, a teljesen rekurz\u00edv szakaszol\u00e1st (partitioning) \u00e9s a sz\u00edn- \u00e9s f\u00e9nyer\u0151 param\u00e9terek hat\u00e9konyabb elv\u00e1laszt\u00e1s\u00e1t. Az AV2 egy egys\u00e9ges\u00edtett exponenci\u00e1lis kvant\u00e1l\u00f3t alkalmaz, amely sz\u00e9lesebb f\u00e9nyer\u0151-tartom\u00e1nyt \u00f6lel fel, \u00e9s nagyobb kvant\u00e1l\u00e1si pontoss\u00e1got biztos\u00edt a 8-, 10- \u00e9s 12-bites vide\u00f3k sz\u00e1m\u00e1ra, valamint jobban kezeli az alacsony bitsebess\u00e9geket. <\/p>\n

Kiterjesztett\u00e9k a k\u00e9pk\u00f6zi v\u00e1ltoz\u00e1sok el\u0151rejelz\u00e9si k\u00e9pess\u00e9geit, amelyek jobban modellezik a f\u00e9nyess\u00e9g \u00e9s sz\u00ednv\u00e1lt\u00e1sok v\u00e1ltoz\u00e1s\u00e1t, figyelembe v\u00e9ve a modell fel\u00e9p\u00edt\u00e9sekor ak\u00e1r 7 kor\u00e1bbi k\u00e9pkock\u00e1t is, t\u00e1mogatj\u00e1k az id\u0151beli (temporal) interpol\u00e1ci\u00f3t, \u00e9s jobban kezelik a nagy felbont\u00e1s\u00fa vide\u00f3k vagy a gyorsan v\u00e1ltoz\u00f3 tartalom mozg\u00e1s\u00e1t. Tov\u00e1bbi sz\u0171r\u0151ket adtak hozz\u00e1 a zajok elfojt\u00e1s\u00e1ra, a t\u00f6m\u00f6r\u00edt\u00e9sb\u0151l ad\u00f3d\u00f3 artefaktumok cs\u00f6kkent\u00e9s\u00e9re \u00e9s a r\u00e9szletess\u00e9g meg\u0151rz\u00e9s\u00e9re. Megjegyzik, hogy az AV2 kodek \u00e9s annak referencia megval\u00f3s\u00edt\u00e1sa m\u00e1r befejez\u0151d\u00f6tt, de a specifik\u00e1ci\u00f3t finom\u00edtani kell, v\u00e9gleges v\u00e1ltozat\u00e1t az \u00e9v v\u00e9g\u00e9n tervezik k\u00f6zz\u00e9tenni.

\r\n \"Vide\u00f3\r\n
<\/div>\r\n <\/div><\/center>
\n
Forr\u00e1s: 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\udd47Az AV2 kodek 30%-kal cs\u00f6kkentette a bitr\u00e1t\u00e1t az AV1 min\u0151s\u00e9gi szint mellett | ProHoster","description":"A QoMEX (Quality of Multimedia Experience) konferenci\u00e1n az egyik el\u0151ad\u00e1sban bemutatt\u00e1k az Open Media (AOMedia) sz\u00f6vets\u00e9g \u00e1ltal fejlesztett AV2 vide\u00f3k\u00f3dol\u00e1si form\u00e1tum tesztel\u00e9s\u00e9nek eredm\u00e9nyeit, amely a 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