動画の長さに合わせて無音ファイルをカット
$ ffmpeg -ss 0 -i mute30.wav -t 16.45 mute.wav
無音ファイルと動画を結合
$ ffmpeg -i in.mp4 -i mute.wav -vf scale=886:1920,setsar=1:1 out.mp4
Last active
February 1, 2022 14:07
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