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I Know how to add audio to video with Ffmpeg. But it works like that :

This is the input - Video.mov (mute) - Audio.wav

This is the output VideoWithSound.mov

Is it possible to add audio to the video without generating a new file ? Simple by modifying the Input file ?

My command line is :

ffmpeg -probesize 50M -analyzeduration 100M -i /Users/xxx/Documents/ReplaceScript/video.mov -i /Users/xxx/Documents/ReplaceScript/Audio.wav -af apad -shortest -map 0:0 -map 1:0 -c:a pcm_s24le -async 1 -t " & valeur & " -c:v copy -aspect 16:9 -metadata creation_time=now -sn -y /Users/xxx/Documents/ReplaceScript/VideoWithSound.mov

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    Not possible. ffmpeg can't modify a file in-place. – llogan Jan 23 at 0:23
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Not possible.

You have to delete the old file and rename the new one.

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