{"author_name":"licheng","type":"rich","url":"https://lipoyang.hatenablog.com/entry/2021/10/30/152054","height":"190","blog_title":"\u6ef4\u4e86\u5eb5\u65e5\u9332","image_url":null,"provider_name":"Hatena Blog","description":"ffmpeg\u3067\u500b\u4eba\u7684\u306b\u3088\u304f\u4f7f\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u30e1\u30e2\u3002 -i \u5165\u529b\u30d5\u30a1\u30a4\u30eb\u540d \uff1a\u5165\u529b\u30d5\u30a1\u30a4\u30eb\u306e\u6307\u5b9a -r 29.97 \uff1a\u30d5\u30ec\u30fc\u30e0\u30ec\u30fc\u30c8\u306e\u5909\u63db -vf scale=1280:-1 \uff1a\u30ea\u30b5\u30a4\u30ba(\u6a2a:\u7e26\u3001\u81ea\u52d5\u3067\u8a2d\u5b9a\u3057\u305f\u3044\u307b\u3046\u3092 -1) -af volume=-6dB \uff1a\u97f3\u58f0\u306e\u30ec\u30d9\u30eb\u8abf\u6574 -af dynaudnorm \uff1a\u97f3\u91cf\u306e\u81ea\u52d5\u8abf\u6574 (\u52d5\u7684\u6b63\u898f\u5316) -an \uff1a\u97f3\u58f0\u7121\u3057 -ss 3 \uff1a3\u79d2\u76ee\u304b\u3089 -to 10 \uff1a10\u79d2\u76ee\u307e\u3067 -t 10 \uff1a10\u79d2\u9593 \u4f8b ffmpeg -i input.mp4 -r 29.97 -af volume=-6dB output.mp4 \u30ce\u30a4\u30ba\u9664\u53bb\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u4f8b ffmpeg -\u2026","title":"\u30e1\u30e2:ffmpeg\u306e\u30aa\u30d7\u30b7\u30e7\u30f3","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Flipoyang.hatenablog.com%2Fentry%2F2021%2F10%2F30%2F152054\" title=\"\u30e1\u30e2:ffmpeg\u306e\u30aa\u30d7\u30b7\u30e7\u30f3 - \u6ef4\u4e86\u5eb5\u65e5\u9332\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/licheng/","published":"2021-10-30 15:20:54","blog_url":"https://lipoyang.hatenablog.com/","provider_url":"https://hatena.blog","categories":["\u30d1\u30bd\u30b3\u30f3"],"version":"1.0"}