{"id":162582,"date":"2026-02-22T23:12:07","date_gmt":"2026-02-22T21:12:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/alyans-aomedia-razvivaet-zvukovoj-kodek-oac-open-audio-codec-osnovannyj-na-opus"},"modified":"2026-02-22T23:12:07","modified_gmt":"2026-02-22T21:12:07","slug":"alyans-aomedia-razvivaet-zvukovoj-kodek-oac-open-audio-codec-osnovannyj-na-opus","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/alyans-aomedia-razvivaet-zvukovoj-kodek-oac-open-audio-codec-osnovannyj-na-opus","title":{"rendered":"L'alliance AOMedia d\u00e9veloppe le codec audio OAC (Open Audio Codec), bas\u00e9 sur Opus.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>L'Alliance Open Media (AOMedia), qui supervise le d\u00e9veloppement des formats de codage vid\u00e9o AV1\/AV2, du format audio spatial IAMF et du format d'images AVIF, a commenc\u00e9 \u00e0 d\u00e9velopper le codec audio Open Audio Codec (OAC), pr\u00e9sent\u00e9 comme la continuit\u00e9 du d\u00e9veloppement du codec Opus cr\u00e9\u00e9 par l'organisation Xiph.Org. En tant qu'impl\u00e9mentation de r\u00e9f\u00e9rence de l'encodeur et du d\u00e9codeur OAC sous licence BSD, la biblioth\u00e8que liboac a \u00e9t\u00e9 propos\u00e9e, d\u00e9velopp\u00e9e \u00e0 partir du code de la biblioth\u00e8que libopus.    <\/p>\n<p>L'objectif principal de l'OAC est la transmission de la parole et du son sur Internet. Ce codec est adapt\u00e9 \u00e0 diverses applications li\u00e9es \u00e0 la transmission audio interactive et peut \u00eatre utilis\u00e9 dans divers domaines, allant de la t\u00e9l\u00e9phonie VoIP et des vid\u00e9oconf\u00e9rences aux discussions de jeux et aux concerts \u00e0 distance. L'OAC est \u00e9volutif pour la compression de flux audio \u00e0 haut d\u00e9bit, par exemple pour la transmission de musique st\u00e9r\u00e9o de qualit\u00e9, ainsi que pour la compression de la voix sur des canaux de communication \u00e0 bande passante limit\u00e9e.       <\/p>\n<p>Le d\u00e9veloppement est encore \u00e0 un stade alpha pr\u00e9coce. Le flux de bits (bitstream) g\u00e9n\u00e9r\u00e9 par la biblioth\u00e8que liboac ne doit pas \u00eatre utilis\u00e9 pour la distribution de fichiers OAC \u00e0 ce stade du d\u00e9veloppement, car il contient des donn\u00e9es de d\u00e9bogage suppl\u00e9mentaires et ne prend pas en charge le changement de position dans le flux (seeking).      <\/p>\n<p>\u00c0 l'exception de l'absence de mention d'un ajustement dynamique du bitrate, de la plage de fr\u00e9quences audio et de la taille des images, la liste des fonctionnalit\u00e9s de l'OAC r\u00e9p\u00e8te la description du codec Opus 1.5 :    <\/p>\n<ul>\n<li class=\"l\">D\u00e9bit de 6 Kbit\/s \u00e0 510 Kbit\/s ;  <\/li>\n<li class=\"l\">Fr\u00e9quence d'\u00e9chantillonnage de 8 \u00e0 48 KHz ;  <\/li>\n<li class=\"l\">Dur\u00e9e des images de 2,5 \u00e0 60 millisecondes ;  <\/li>\n<li class=\"l\">Support des d\u00e9bits binaires constants (CBR) et variables (VBR) ;  <\/li>\n<li class=\"l\"> Prise en charge de jusqu'\u00e0 255 canaux ;\n<li class=\"l\">Support de l'audio \u00e9troit et large bande ;  <\/li>\n<li class=\"l\">Support pour la voix et la musique ;  <\/li>\n<li class=\"l\">Support st\u00e9r\u00e9o et mono ;  <\/li>\n<li class=\"l\">Possibilit\u00e9 de restaurer le flux audio en cas de perte de trames (PLC) ;    <\/li>\n<li class=\"l\">Disponibilit\u00e9 de mises en \u0153uvre utilisant l'arithm\u00e9tique \u00e0 virgule flottante et fixe.  <\/li>\n<\/ul>\n<p>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64852\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0410\u043b\u044c\u044f\u043d\u0441 Open Media (AOMedia), \u043a\u0443\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1\/AV2, \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043e\u0431\u044a\u0451\u043c\u043d\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u0430 IAMF \u0438 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 AVIF, \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043b \u043a \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u0434\u0435\u043a\u0430 Open Audio Codec (OAC), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0435\u043f\u043e\u0434\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a\u0430\u043a \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u0435 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u044f \u043a\u043e\u0434\u0435\u043a\u0430 Opus, \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u043e\u0433\u043e \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0435\u0439 Xiph.Org. \u0412 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\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 OAC \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 liboac, \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u0430\u044f \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u0434\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-162582","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=\"\u0410\u043b\u044c\u044f\u043d\u0441 Open Media (AOMedia), \u043a\u0443\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1\/AV2, \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043e\u0431\u044a\u0451\u043c\u043d\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u0430 IAMF \u0438 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