{"id":182645,"date":"2026-07-15T16:53:50","date_gmt":"2026-07-15T14:53:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-svt-av1-4-2-0-kodirovshhika-dlya-formata-video-av1"},"modified":"2026-07-15T16:53:50","modified_gmt":"2026-07-15T14:53:50","slug":"vypusk-svt-av1-4-2-0-kodirovshhika-dlya-formata-video-av1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypusk-svt-av1-4-2-0-kodirovshhika-dlya-formata-video-av1","title":{"rendered":"SVT-AV1 4.2.0 v\u00e4ljaanne, video AV1 formaadi kodeerija.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ilmub SVT-AV1 4.2.0 (Scalable Video Technology AV1) raamatukogu v\u00e4ljaanne, mis sisaldab AV1 videokodeerimise vormi kodeerija ja dekodeerija teostusi. Selle kiirendamiseks kasutavad \u00e4ra x86_64 ja ARM protsessorites olemasolevaid riistvaralisi paralleelsete arvutuste laiendusi. Projekti on loonud Intel koos Netflixiga, et saavutada piisav j\u00f5udlus videote reenkodeerimiseks reaalajas ja pakkuda videot n\u00f5udmisel (VOD) teenustes. Praegu toimub arendus Open Media (AOMedia) \u00fchenduse all, mis juhib AV1 video kodeerimisformaatide arengut. Varem arenes projekt OpenVisualCloudi projekti raames, mis arendab ka SVT-HEVC ja SVT-VP9 kodeerijaid. Kood on licentsitud BSD alusel.     <\/p>\n<p>SVT-AV1 saab kokku panna igasuguste arhitektuuride jaoks, mille jaoks on olemas C99 standardit toetav kompilaator, kuid parim j\u00f5udlus saavutatakse x86_64 s\u00fcsteemide puhul, kus kasutatakse SIMD-i (soovitavalt AVX2 toe olemasolu protsessoris, kuid minimaalselt piisab ka SSE2-st) p\u00f5hinevaid assembleri optimeerimisi. M\u00e4lu tarbimine s\u00f5ltub kodeerimises kasutatavate protsessorituumade arvust, mida reguleeritakse parameetriga &#171;&#8212;lp&#187;. Kuna AV1 algoritmide kasutamine on keerulisem, vajab selle formaadi kodeerimine oluliselt rohkem ressursse kui teiste formaatide puhul.     <\/p>\n<p>Uues SVT-AV1 v\u00e4ljaandes on mitmeid muudatusi:  <\/p>\n<ul>\n<li class=\"l\"> On rakendatud uus TUNE-VMAF optimeerimisre\u017eiim, mis v\u00f5imaldab s\u00e4\u00e4sta kuni 15% bitikiirusest sama visuaalse kvaliteedi juures vastavalt VMAF m\u00f5\u00f5dikule, mis hindab inimeste tajumist, ja v\u00e4hese kvaliteedi langusega PSNR m\u00f5\u00f5diku juures, mis hindab andmete t\u00e4pset taasesitamist pikslitasemel.\n<li class=\"l\"> On rakendatud \u00fchetuuma kodeerimisre\u017eiim, mida saab kasutada juhusliku juurdep\u00e4\u00e4su re\u017eiimiga (Random Access).\n<li class=\"l\"> M3-M5 presetites on optimiseeritud kvaliteedi ja kiirus kompromisse, kui kodeerida juhuslikku p\u00e4\u00e4su re\u017eiimis.\n<li class=\"l\"> Lisatud uued k\u00e4surea valikud: &#8212;cqp, &#8212;enable-intrabc, &#8212;hbd-mds, &#8212;enable-kf-tf.\n<li class=\"l\"> Lisatud tugi raw-formaadis OBU v\u00e4ljundile lisaks varem toetatud IVF formaadile.\n<li class=\"l\"> Koostootlemise kompromisside optimeerimine kvaliteedi\/kiiruse osas &#171;&#8212;rtc&#187; (Real-Time Communications) re\u017eiimis, samuti on suurenenud kompressiooni efektiivsus ja v\u00e4henenud m\u00e4lu tarbimine madala resolutsiooniga kodeerimisel. Lisatud parameetrid &#171;&#8212;max-intra-bitrate-pct&#187; ja &#171;&#8212;max-inter-bitrate-pct&#187;.\n<li class=\"l\"> Reaalajas kodeerimise re\u017eiim on lisatud pideva bitikiirusaga \u2014 CBR (Constant Bitrate), mis on rakendatud Kalmani filtri abil ning toetab ts\u00fcklilist uuendamist, hajutades keerulisi muudatusi mitme kaadri vahel ja rekodeerides madalama kvaliteediga kaadreid, kui need ei vasta m\u00e4\u00e4ratud bitikiirusetele.\n<li class=\"l\"> Re\u017eiimis &#171;&#8212;rtc&#187; on lisatud tugi bitikiiruse ja eelseadete d\u00fcnaamiliseks muutmiseks reaalajas.\n<li class=\"l\"> Lisatud API, et hallata viidatud kaadreid, mis toetab LTR (Pikaajaline Viide) ja kahealuselist viidatud kaadrite komplekti struktuuri (RPS, Reference Picture Set).\n<li class=\"l\"> \u00dcksikasjalik kodeerimise rakendamine on \u00fcmber kujundatud, et tagada otse kirjutamine segmentide puhverdisse (tile-buffer), lihtsustatud aritmeetiline kooder ja rakendatud j\u00e4\u00e4kandmete k\u00e4rpimine kvantimise j\u00e4rel.\n<li class=\"l\"> Uued CDEF (Piiratud Suunatud T\u00e4ienduskfilter) optimeerimised on lisatud, et v\u00e4ltida udustumist kontrasti muutumise aladel, MD (Re\u017eiimi Otsus) ja ME (Liikumise Hindamine) kiireks staatiliste objektide t\u00f6\u00f6tlemiseks.\n<li class=\"l\"> Videoriski sisu tuvastamine on optimeeritud, et rakendada spetsiifilisi kodeerimismeetodeid teksti selguse s\u00e4ilitamiseks.\n<li class=\"l\"> Lisatud kogumise valik ENABLE_STACK_PROTECTOR, mis v\u00f5imaldab keelata &#171;-fstack-protector&#187; lipu, v\u00e4hendades steki \u00fclevoolu kontrollimise \u00fclekandeid.\n<li class=\"l\"> Lisatud t\u00e4iendavad optimeerimised ARM arhitektuurile ja kasutatud on laiendatud NEON k\u00e4sklusi arvutuste kiirendamiseks.      <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65903\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 SVT-AV1 4.2.0 (Scalable Video Technology AV1) c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1, \u0434\u043b\u044f \u0443\u0441\u043a\u043e\u0440\u0435\u043d\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u044b \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 x86_64 \u0438 ARM \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0440\u0430\u0441\u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u0438\u0432\u0430\u043d\u0438\u044f \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439. \u041f\u0440\u043e\u0435\u043a\u0442 \u0441\u043e\u0437\u0434\u0430\u043d \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Intel \u0432 \u043f\u0430\u0440\u0442\u043d\u0451\u0440\u0441\u0442\u0432\u0435 \u0441 Netflix \u0441 \u0446\u0435\u043b\u044c\u044e \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u044f \u0443\u0440\u043e\u0432\u043d\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e \u043d\u0430 \u043b\u0435\u0442\u0443 \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182645","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 SVT-AV1 4.2.0 (Scalable Video Technology AV1) c 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Projekt on loodud ettev\u00f5tte Intel koost\u00f6\u00f6s Netflixiga, eesm\u00e4rgiga saavutada j\u00f5udlus tase, mis sobib videote reenkodeerimiseks reaalajas ja rakendamiseks.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypusk-svt-av1-4-2-0-kodirovshhika-dlya-formata-video-av1","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u044b\u043f\u0443\u0441\u043a SVT-AV1 4.2.0, \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0434\u043b\u044f \u0444\u043e\u0440\u043c\u0430\u0442\u0430 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