I want audio files to be merged and be the length of the longest one of course.

Not to concat them, which means adding one behind the other.

I tried googling since yesterday night, but didn't found any such thing. Is this really possible ?

  • Yes, it is probably possible, but to give you an example I'd like to see the complete output of ffmpeg -i input1 -i input2 -i input3. – llogan Sep 13 '13 at 18:18
  • @LordNeckbeard found the solution thanks ffmpeg.org/ffmpeg-filters.html#amix – coding_idiot Sep 14 '13 at 2:38

For helping others, I'm posting the solution I found :


Mixes multiple audio inputs into a single output.

For example

ffmpeg -i INPUT1 -i INPUT2 -i INPUT3 -filter_complex amix=inputs=3:duration=first:dropout_transition=3 OUTPUT

Above command will mix 3 input audio streams to a single output with the same duration as the first input and a dropout transition time of 3 seconds.

| improve this answer | |
  • I don't need a transition. How do I skip that? – chovy Mar 21 '17 at 0:44
  • @chovy have you tried 0 for dropout_transition ? – coding_idiot Mar 21 '17 at 19:41

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.