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I've used this code for merging three videos together with ffmpeg :

ffmpeg -y -f concat -safe 0 -i list.txt -c copy done.mp4

the list.txt contains :

file 'first.mp4'
duration 2.5
file 'second.mp4'
duration 20.0
file 'third.mp4'
duration 1.5

But the output video doesn't have any sound! I want sound of each one remains on the output.

what code should i use?

llogan
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Ariza
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  • Show the full output of `ffmpeg -i first.mp4 -i second.mp4 -i third.mp4`. It will provide information about each input which is required to give an accurate answer. – llogan Jan 04 '19 at 19:30
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    I see you [crossposted this at Super User](https://superuser.com/questions/1390603/ffmpeg-concat-removing-sound-of-videos). Please avoid doing that as it dilutes effort and wastes time. – llogan Jan 04 '19 at 19:37

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