{"id":2209,"date":"2016-11-01T13:00:02","date_gmt":"2016-11-01T11:00:02","guid":{"rendered":"http:\/\/stephane.weblog.starend.org\/?p=2209"},"modified":"2016-11-01T13:00:02","modified_gmt":"2016-11-01T11:00:02","slug":"extraction-de-la-piste-son-avec-avconv","status":"publish","type":"post","link":"http:\/\/stephane.weblog.starend.org\/?p=2209","title":{"rendered":"Extraction de la piste son avec avconv"},"content":{"rendered":"<p style=\"text-align: justify;\">Sous Linux, l&rsquo;outil <a title=\"libav.org\" href=\"https:\/\/libav.org\/\" target=\"_blank\">libav<\/a> permet de manipuler en ligne de commande les vid\u00e9os et notamment de scripter tout plein de choses.<\/p>\n<p style=\"text-align: justify;\">Le paquet \u00e0 installer sous Debian\/Ubuntu s&rsquo;appelle <em>libav-tools<\/em> (<a title=\"libav-tools\" href=\"https:\/\/packages.debian.org\/jessie\/libav-tools\" target=\"_blank\">D<\/a>\/<a title=\"libav-tools\" href=\"http:\/\/packages.ubuntu.com\/xenial\/libav-tools\" target=\"_blank\">U<\/a>).<\/p>\n<p style=\"text-align: justify;\">Pour extraire la piste son d&rsquo;une vid\u00e9o et la r\u00e9-encoder dans un format audio donn\u00e9 (ici <a title=\"ogg vorbis\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Vorbis\" target=\"_blank\">ogg-vorbis<\/a>), il faut utiliser la commande :<\/p>\n<pre>avconv -i fichier_video.mp4 \\\r\n-map 0:1 \\\r\n-strict experimental \\\r\n-acodec vorbis -ar 44100 -ac 2 -ab 192k \\\r\nfichier_audio.ogg<\/pre>\n<p style=\"text-align: justify;\">\u00c7a tient sur une seule ligne sans les <code>\\<\/code> de fin de lignes; mais dans un script c&rsquo;est plus clair&#8230;<\/p>\n<p style=\"text-align: justify;\">On peut bien s\u00fcr jouer sur la qualit\u00e9 de re-compression ou le format audio de sortie :-)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sous Linux, l&rsquo;outil libav permet de manipuler en ligne de commande les vid\u00e9os et notamment de scripter tout plein de choses. Le paquet \u00e0 installer sous Debian\/Ubuntu s&rsquo;appelle libav-tools (D\/U). Pour extraire la piste son d&rsquo;une vid\u00e9o et la r\u00e9-encoder dans un format audio donn\u00e9 (ici ogg-vorbis), il faut utiliser la commande : avconv -i &hellip; <a href=\"http:\/\/stephane.weblog.starend.org\/?p=2209\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Extraction de la piste son avec avconv<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,43,10,11,26],"tags":[],"_links":{"self":[{"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=\/wp\/v2\/posts\/2209"}],"collection":[{"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2209"}],"version-history":[{"count":1,"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=\/wp\/v2\/posts\/2209\/revisions"}],"predecessor-version":[{"id":2210,"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=\/wp\/v2\/posts\/2209\/revisions\/2210"}],"wp:attachment":[{"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2209"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/stephane.weblog.starend.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}