I'm trying to concatenate two audio files and add it to a video file but the output does not contain the audio.
I can see the duration of the output video is the sum of the two audio. But the audio is not present.
ffmpeg -i v1.mp4 -i a1.mp3 -i a2.mp3 -filter_complex "[1][2]concat=a=1:n=2:v=0[s0]" -map 0 -map '[s0]' -shortest 'out.mp4'
Any help on this issue would be great!
-map 0
to-map 0:v