{"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\/fr\/blog\/news\/opublikovan-svobodnyj-zvukovoj-kodek-flac-1-5","title":{"rendered":"Le codec audio libre FLAC 1.5 a \u00e9t\u00e9 publi\u00e9.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>La communaut\u00e9 Xiph.Org a publi\u00e9 une mise \u00e0 jour du codec audio libre FLAC 1.5.0, permettant de compresser le son sans perte de qualit\u00e9. FLAC utilise uniquement des m\u00e9thodes de codage sans perte de donn\u00e9es (lossless), garantissant la pr\u00e9servation int\u00e9grale de la qualit\u00e9 initiale du flux audio et son identit\u00e9 avec la version de r\u00e9f\u00e9rence soumise \u00e0 codage. De plus, les m\u00e9thodes de compression sans perte permettent de r\u00e9duire la taille du flux audio original de 50 \u00e0 60 %. FLAC est un format de flux enti\u00e8rement libre, ce qui implique non seulement l'ouverture des biblioth\u00e8ques mettant en \u0153uvre les fonctions de codage et de d\u00e9codage, mais aussi l'absence de restrictions sur l'utilisation des sp\u00e9cifications et la cr\u00e9ation de variantes d\u00e9riv\u00e9es. Le code des biblioth\u00e8ques est distribu\u00e9 sous licence BSD.  <\/p>\n<p>Parmi les changements dans la nouvelle version :  <\/p>\n<ul>\n<li class=\"l\"> Le fonctionnement de l'encodeur en mode multithreading est assur\u00e9. L'encodeur multithread peut \u00eatre utilis\u00e9 via libFLAC ou par l'utilitaire en ligne de commande flac.\n<li class=\"l\"> Ajout de la possibilit\u00e9 de d\u00e9coder des fichiers Ogg cha\u00een\u00e9s (chained), dans lesquels plusieurs flux audio FLAC ind\u00e9pendants sont emball\u00e9s dans un seul fichier.\n<li class=\"l\"> Dans libFLAC, libFLAC++ et metaflac, la prise en charge de l'\u00e9criture dans un nouveau fichier lors de la modification des m\u00e9tadonn\u00e9es a \u00e9t\u00e9 mise en \u0153uvre, au lieu de remplacer le fichier existant. Dans libFLAC, lors de la modification des m\u00e9tadonn\u00e9es, une v\u00e9rification a \u00e9t\u00e9 ajout\u00e9e pour indiquer un lien symbolique comme fichier d'entr\u00e9e et une protection contre l'\u00e9criture dans de tels fichiers lors du remplacement en place.\n<li class=\"l\"> L'API des biblioth\u00e8ques libFLAC et libFLAC++ a \u00e9t\u00e9 \u00e9largie.\n<li class=\"l\"> L'impl\u00e9mentation du mode LMS (Loose Mid-Side) a \u00e9t\u00e9 adapt\u00e9e pour un fonctionnement multithread, codant s\u00e9par\u00e9ment les informations communes pour les canaux st\u00e9r\u00e9o et la diff\u00e9rence entre les canaux gauche et droit.\n<li class=\"l\"> La prise en charge de la compilation en WebAssembly par le compilateur Emscripten a \u00e9t\u00e9 mise en \u0153uvre.\n<li class=\"l\"> La sp\u00e9cification du format FLAC est fix\u00e9e dans le RFC 9639.\n<li class=\"l\"> Dans l'utilitaire flac, une v\u00e9rification des correspondances des hachages MD5 a \u00e9t\u00e9 ajout\u00e9e lors de la re-encodage d'un fichier FLAC existant. En mode test &#171;flac -t&#187;, tous les blocs de m\u00e9tadonn\u00e9es sont d\u00e9sormais analys\u00e9s et des avertissements sont affich\u00e9s en cas de d\u00e9tection de m\u00e9tadonn\u00e9es ID3v1. L'aide int\u00e9gr\u00e9e sur les options disponibles a \u00e9t\u00e9 am\u00e9lior\u00e9e. Le format de stockage pour les m\u00e9tadonn\u00e9es externes utilis\u00e9es par l'utilitaire flac est document\u00e9.\n<li class=\"l\"> La licence de documentation GFDL (GNU Free Documentation License) a \u00e9t\u00e9 mise \u00e0 jour vers la version 1.3 (anciennement version 1.2).         <\/ul>\n<p>Source : <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 5.0.2 - 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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