FFmpeg (merge two audio) -


i have 2 long audio files. want merge cut part each video , merge both parts in 1 file.

in below command problem there no audio in second audio part. contain first part , second empty.

what problem?

ffmpeg -f lavfi -i color=c=black  -ss 157.824 -t 99.818  -i "file1.mp4"  -ss 315.764 -t 50.308  -i "file2.mp4"  -s 854x480  -aspect 1.779167 -r 25  -c:v libx264  -b:v 800k  -c:a aac  -strict experimental  -b:a 128k  -f mp4  -t 150.126 -async 1  -y "output.mp4"


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