{"id":121849,"date":"2025-02-11T20:22:05","date_gmt":"2025-02-11T18:22:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovan-svobodnyj-zvukovoj-kodek-flac-1-5"},"modified":"2025-02-11T20:22:05","modified_gmt":"2025-02-11T18:22:05","slug":"opublikovan-svobodnyj-zvukovoj-kodek-flac-1-5","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/opublikovan-svobodnyj-zvukovoj-kodek-flac-1-5","title":{"rendered":"Byl vyd\u00e1n voln\u00fd zvukov\u00fd kodek FLAC 1.5.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Komunita Xiph.Org vydala aktualizaci svobodn\u00e9ho zvukov\u00e9ho kodeku FLAC 1.5.0, kter\u00e1 umo\u017e\u0148uje komprimaci zvuku bez ztr\u00e1ty kvality. FLAC pou\u017e\u00edv\u00e1 pouze metody k\u00f3dov\u00e1n\u00ed bez ztr\u00e1ty dat (lossless), co\u017e zaru\u010duje \u00faplnou zachov\u00e1n\u00ed p\u016fvodn\u00ed kvality zvukov\u00e9ho toku a jeho identi\u010dnost s referen\u010dn\u00edm variantem podroben\u00fdm k\u00f3dov\u00e1n\u00ed. Pou\u017e\u00edvan\u00e9 metody bez ztr\u00e1t nav\u00edc umo\u017e\u0148uj\u00ed sn\u00ed\u017eit velikost p\u016fvodn\u00edho zvukov\u00e9ho toku o 50-60 %. FLAC je zcela svobodn\u00fd streamovac\u00ed form\u00e1t, kter\u00fd se vyzna\u010duje nejen otev\u0159enost\u00ed knihoven implementuj\u00edc\u00edch funkce k\u00f3dov\u00e1n\u00ed a dek\u00f3dov\u00e1n\u00ed, ale tak\u00e9 absenc\u00ed omezen\u00ed na pou\u017e\u00edv\u00e1n\u00ed specifikac\u00ed a vytv\u00e1\u0159en\u00ed odvozen\u00fdch variant. K\u00f3d knihoven je \u0161\u00ed\u0159en pod licenc\u00ed BSD.  <\/p>\n<p>Mezi zm\u011bnami v nov\u00e9 verzi:  <\/p>\n<ul>\n<li class=\"l\"> Zaji\u0161t\u011bna funkce kod\u00e9ru v v\u00edcerozm\u011brn\u00e9m re\u017eimu. V\u00edcevl\u00e1knov\u00fd kod\u00e9r lze pou\u017e\u00edvat prost\u0159ednictv\u00edm libFLAC nebo pomoc\u00ed p\u0159\u00edkazov\u00e9 \u0159\u00e1dky flac.\n<li class=\"l\"> P\u0159id\u00e1na mo\u017enost dek\u00f3dov\u00e1n\u00ed spojen\u00fdch (chained) Ogg soubor\u016f, ve kter\u00fdch je zabaleno v\u00edce nez\u00e1visl\u00fdch audio tok\u016f FLAC.\n<li class=\"l\"> V libFLAC, libFLAC++ a metaflac byla implementov\u00e1na podpora z\u00e1pisu do nov\u00e9ho souboru p\u0159i zm\u011bn\u011b metadat, nam\u00edsto p\u0159eps\u00e1n\u00ed existuj\u00edc\u00edho souboru. V libFLAC byla p\u0159i zm\u011bn\u011b metadat p\u0159id\u00e1na kontrola pro ur\u010den\u00ed symbolick\u00e9ho odkazu jako vstupn\u00edho souboru a byla implementov\u00e1na ochrana proti z\u00e1pisu do takov\u00fdchto soubor\u016f p\u0159i v\u00fdm\u011bn\u011b souboru na m\u00edst\u011b.\n<li class=\"l\"> API knihoven libFLAC a libFLAC++ bylo roz\u0161\u00ed\u0159eno.\n<li class=\"l\"> Implementace re\u017eimu LMS (Loose Mid-Side) byla p\u0159izp\u016fsobena pro v\u00edcerozm\u011brnou pr\u00e1ci, odd\u011blen\u011b k\u00f3duj\u00edc\u00ed spole\u010dn\u00e9 informace pro stereokan\u00e1ly a rozd\u00edl mezi lev\u00fdm a prav\u00fdm kan\u00e1lem.\n<li class=\"l\"> Byla implementov\u00e1na podpora kompilace do form\u00e1tu WebAssembly pomoc\u00ed kompil\u00e1toru Emscripten.\n<li class=\"l\"> Specifikace form\u00e1tu FLAC byla zaji\u0161t\u011bna v RFC 9639.\n<li class=\"l\"> V utilit\u011b flac byla p\u0159i p\u0159ek\u00f3dov\u00e1n\u00ed st\u00e1vaj\u00edc\u00edho FLAC souboru p\u0159id\u00e1na kontrola shody MD5 hash\u016f. V testovac\u00edm re\u017eimu \u201eflac -t\u201c se nyn\u00ed analyzuj\u00ed v\u0161echny bloky metadat a p\u0159i nalezen\u00ed metadat ID3v1 se zobrazuj\u00ed varov\u00e1n\u00ed. Byla vylep\u0161ena vestav\u011bn\u00e1 n\u00e1pov\u011bda k dostupn\u00fdm mo\u017enostem. Je zdokumentov\u00e1n form\u00e1t pro ulo\u017een\u00ed extern\u00edch metadat pou\u017e\u00edvan\u00fdch utilitou flac.\n<li class=\"l\"> Licence na dokumentaci GFDL (GNU Free Documentation License) byla aktualizov\u00e1na na verzi 1.3 (p\u0159edt\u00edm verze 1.2).         <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62708\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e Xiph.Org \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u0434\u0435\u043a\u0430 FLAC 1.5.0, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0441\u0436\u0438\u043c\u0430\u0442\u044c \u0437\u0432\u0443\u043a \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 \u043f\u043e\u0442\u0435\u0440\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0443\u043c\u0435\u043d\u044c\u0448\u0438\u0442\u044c \u0440\u0430\u0437\u043c\u0435\u0440 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0433\u043e \u043f\u043e\u0442\u043e\u043a\u0430 \u043d\u0430 50-60%. [&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-121849","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e Xiph.Org \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u0434\u0435\u043a\u0430 FLAC 1.5.0, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0441\u0436\u0438\u043c\u0430\u0442\u044c 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