{"id":105064,"date":"2022-09-11T03:36:39","date_gmt":"2022-09-11T01:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovan-svobodnyj-zvukovoj-kodek-flac-1-4"},"modified":"2022-09-11T03:36:39","modified_gmt":"2022-09-11T01:36:39","slug":"opublikovan-svobodnyj-zvukovoj-kodek-flac-1-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/opublikovan-svobodnyj-zvukovoj-kodek-flac-1-4","title":{"rendered":"Bol vydan\u00fd vo\u013en\u00fd zvukov\u00fd kodek FLAC 1.4","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po deviatich rokoch od zverejnenia predch\u00e1dzaj\u00facej v\u00fdznamnej verzie komunita Xiph.Org predstavila nov\u00fa verziu slobodn\u00e9ho kodeku FLAC 1.4.0, ktor\u00e1 zabezpe\u010duje k\u00f3dovanie zvuku bez straty kvality. FLAC pou\u017e\u00edva iba met\u00f3dy k\u00f3dovania bez straty \u00fadajov (lossless), \u010do zaru\u010duje \u00fapln\u00fa zachovanie p\u00f4vodnej kvality zvukov\u00e9ho toku a jeho identitu so referen\u010dnou verziou, ktor\u00e1 bola k\u00f3dovan\u00e1. Pou\u017eit\u00e9 bezstratov\u00e9 kompresn\u00e9 met\u00f3dy umo\u017e\u0148uj\u00fa zmen\u0161i\u0165 ve\u013ekos\u0165 p\u00f4vodn\u00e9ho zvukov\u00e9ho toku o 50-60%. FLAC je \u00faplne slobodn\u00fd streamovac\u00ed form\u00e1t, ktor\u00fd predpoklad\u00e1 nielen otvorenos\u0165 kni\u017en\u00edc s implement\u00e1ciou funkci\u00ed k\u00f3dovania a dek\u00f3dovania, ale aj absenciu obmedzen\u00ed pri vyu\u017e\u00edvan\u00ed \u0161pecifik\u00e1ci\u00ed a vytv\u00e1ran\u00ed odvoden\u00fdch variantov. K\u00f3d kni\u017en\u00edc sa \u0161\u00edri pod licenciou BSD.    <\/p>\n<p>Medzi najd\u00f4le\u017eitej\u0161ie zmeny patr\u00ed:  <\/p>\n<ul>\n<li class=\"l\">  Pridan\u00e1 podpora pre k\u00f3dovanie a dek\u00f3dovanie s kvantiza\u010dnou rozl\u00ed\u0161en\u00edm 32 bitov na vzorku (bit-per-sample).\n<li class=\"l\"> \u00da\u010dinnos\u0165 kompresie sa zv\u00fd\u0161ila na \u00farovniach od 3 do 8, za cenu mierneho zn\u00ed\u017eenia r\u00fdchlosti k\u00f3dovania z d\u00f4vodu zv\u00fd\u0161enia presnosti v\u00fdpo\u010dtu autokorel\u00e1cie. R\u00fdchlos\u0165 k\u00f3dovania bola zv\u00fd\u0161en\u00e1 pre \u00farovne 0, 1 a 2. Mierne sa zlep\u0161ila kompresia na \u00farovniach od 1 do 4 zmenou adapt\u00edvnej heuristiky.\n<li class=\"l\"> V\u00fdrazne sa zv\u00fd\u0161ila r\u00fdchlos\u0165 kompresie na 64-bitov\u00fdch procesoroch ARMv8, v\u010faka vyu\u017eitiu in\u0161trukci\u00ed NEON. Zlep\u0161en\u00fd v\u00fdkon na procesoroch x86_64, ktor\u00e9 podporuj\u00fa in\u0161truk\u010dn\u00fd set FMA.\n<li class=\"l\"> API a ABI kni\u017en\u00edc libFLAC a libFLAC++ boli zmenen\u00e9 (pri aktualiz\u00e1cii na verziu 1.4 je potrebn\u00e9 prekompilova\u0165 aplik\u00e1cie).\n<li class=\"l\"> Plugin pre XMMS bol vyhl\u00e1sen\u00fd za zastaran\u00fd a bude odstr\u00e1nen\u00fd v nasleduj\u00facej verzii.\n<li class=\"l\"> V kni\u017enici libFLAC a utilite flac bola pridan\u00e1 mo\u017enos\u0165 obmedzenia minim\u00e1lnej bitrate pre FLAC s\u00fabory, a\u017e do 1 bitu na vzorku (m\u00f4\u017ee by\u0165 u\u017eito\u010dn\u00e9 pri organiz\u00e1cii live vysielania).\n<li class=\"l\"> Bolo mo\u017en\u00e9 k\u00f3dova\u0165 s\u00fabory s vzorkovacou frekvenciou a\u017e 1048575 Hz.\n<li class=\"l\"> V utilite flac boli implementovan\u00e9 nov\u00e9 mo\u017enosti \u00ab\u2013limit-min-bitrate\u00bb a \u00ab\u2013keep-foreign-metadata-if-present\u00bb.     <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57761\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043f\u0443\u0441\u0442\u044f \u0434\u0435\u0432\u044f\u0442\u044c \u043b\u0435\u0442 \u0441 \u043c\u043e\u043c\u0435\u043d\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e Xiph.Org \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u043e \u043d\u043e\u0432\u0443\u044e \u0432\u0435\u0440\u0441\u0438\u044e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0435\u043a\u0430 FLAC 1.4.0, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0437\u0432\u0443\u043a\u0430 \u0431\u0435\u0437 \u043f\u043e\u0442\u0435\u0440\u0438 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430. FLAC \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043c\u0435\u0442\u043e\u0434\u044b \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0435\u0437 \u043e\u0442\u0431\u0440\u0430\u0441\u044b\u0432\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 (lossless), \u0447\u0442\u043e \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u0442 \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u043e\u0445\u0440\u0430\u043d\u043d\u043e\u0441\u0442\u044c \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0433\u043e \u043f\u043e\u0442\u043e\u043a\u0430 \u0438 \u0435\u0433\u043e \u0438\u0434\u0435\u043d\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u044c \u0441 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u044b\u043c \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u043c, \u043f\u043e\u0434\u0432\u0435\u0440\u0433\u043d\u0443\u0442\u044b\u043c \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u0441\u0436\u0430\u0442\u0438\u044f \u0431\u0435\u0437 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-105064","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043f\u0443\u0441\u0442\u044f \u0434\u0435\u0432\u044f\u0442\u044c \u043b\u0435\u0442 \u0441 \u043c\u043e\u043c\u0435\u043d\u0442\u0430 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