{"id":713,"date":"2017-01-20T02:22:50","date_gmt":"2017-01-20T07:22:50","guid":{"rendered":"http:\/\/main.jmah.net\/?p=713"},"modified":"2025-05-19T19:54:26","modified_gmt":"2025-05-19T23:54:26","slug":"how-to-increase-volume-in-a-video-without-re-encoding-the-video","status":"publish","type":"post","link":"https:\/\/main.jmah.net\/?p=713","title":{"rendered":"Increasing volume in a video without re-encoding"},"content":{"rendered":"<p><a href=\"http:\/\/main.jmah.net\/?attachment_id=714\" rel=\"attachment wp-att-714\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-714\" src=\"http:\/\/main.jmah.net\/wp-content\/uploads\/2017\/01\/ffmpeg.jpg\" alt=\"\" width=\"428\" height=\"240\" \/><\/a>I needed for a reliable, fast and non-destructive way to increase gain on a video\u2019s audio track. I found it in using the ffmpeg tool, which is a swiss army knife for dealing with video and audio files. It\u2019s conveniently cross-platform and works wonders.<br \/>\nTo increase the volume of the first audio track for 10dB use:<br \/>\n<strong>ffmpeg -i inputfile -vcodec copy -af volume=10dB outputfile<\/strong><br \/>\nTo decrease the volume of the first audio track for 3dB use:<br \/>\n<strong>ffmpeg -i inputfile -vcodec copy -af volume=-3dB outputfile<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I needed for a reliable, fast and non-destructive way to increase gain on a video\u2019s audio track. I found it in using the ffmpeg tool, which is a swiss army knife for dealing with video and audio files. It\u2019s conveniently &hellip; <a href=\"https:\/\/main.jmah.net\/?p=713\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,7],"tags":[],"class_list":["post-713","post","type-post","status-publish","format-standard","hentry","category-ffmpeg","category-research-information-technology"],"_links":{"self":[{"href":"https:\/\/main.jmah.net\/index.php?rest_route=\/wp\/v2\/posts\/713","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/main.jmah.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/main.jmah.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/main.jmah.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/main.jmah.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=713"}],"version-history":[{"count":7,"href":"https:\/\/main.jmah.net\/index.php?rest_route=\/wp\/v2\/posts\/713\/revisions"}],"predecessor-version":[{"id":1134,"href":"https:\/\/main.jmah.net\/index.php?rest_route=\/wp\/v2\/posts\/713\/revisions\/1134"}],"wp:attachment":[{"href":"https:\/\/main.jmah.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/main.jmah.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/main.jmah.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}