{"author_name":"takuya_1st","categories":["ffmpeg"],"title":" ffmpeg \u3067\u97f3\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u8abf\u6574\u3059\u308b\u3002gain \u8abf\u6574","provider_url":"https://hatena.blog","blog_url":"https://takuya-1st.hatenablog.jp/","published":"2016-04-13 02:30:14","url":"https://takuya-1st.hatenablog.jp/entry/2016/04/13/023014","version":"1.0","image_url":null,"provider_name":"Hatena Blog","type":"rich","description":"mp3gain \u4f7f\u3063\u3066\u305f\u3093\u3060\u3051\u3069 ffmpeg \u3067\u3082\u51fa\u6765\u308b\u3053\u3068\u306b\u6c17\u4ed8\u3044\u305f\u3002 \u306a\u3093\u3060\u3001ffmpeg \u6700\u5f37\u3058\u3083\u3093\u3002 \u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u30a2\u30c3\u30d7\u3059\u308b ffmpeg -i tes.mp4 -v copy -af volume=10dB out.mp4 \u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u30c0\u30a6\u30f3\u3059\u308b\u3002 ffmpeg -i tes.mp4 -v copy -af volume=-5dB out.mp4 \u6307\u5b9a\u6642\u9593\u3060\u3051\u5207\u308a\u51fa\u3057\u3066\u3001\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u30a2\u30c3\u30d7\u3059\u308b \u3042\u308b\u7279\u5b9a\u306e\u7b87\u6240\u3060\u3051\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u8abf\u6574\u3059\u308b\u306a\u3089\u3001 \u3044\u3063\u305f\u3093\u3001\u3069\u3053\u304b\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u5207\u308a\u51fa\u3057\u3066\u3001\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u30a2\u30c3\u30d7\uff08\u30c0\u30a6\u30f3\uff09 \u307e\u305a\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u5272\u3059\u308b\u3002 ffmpeg -i input.mp4 -t \u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftakuya-1st.hatenablog.jp%2Fentry%2F2016%2F04%2F13%2F023014\" title=\" ffmpeg \u3067\u97f3\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u8abf\u6574\u3059\u308b\u3002gain \u8abf\u6574 - \u305d\u308c\u30de\u30b0\u3067\uff01\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","author_url":"https://blog.hatena.ne.jp/takuya_1st/","blog_title":"\u305d\u308c\u30de\u30b0\u3067\uff01","height":"190"}