Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I'm trying to extract audio from videos that are split and then concatenated into one MP3 file. Please also note that the videos do not have the same size or format.

I am trying to do:

ffmpeg -i video1.mp4 -ss 00:00:00 -t 10 \
-i video2.mp4 -ss 00:00:00 -t 10 \
-i video3.mp4 -ss 00:00:00 -t 10 \
-filter_complex "[0:1] [1:1] [2:1] concat=n=3:v=0:a=1 [a]" -map "[a]" total.mp3

But I only get one 10 second result MP3 file and not a 30 second one from all 3 video files.

share|improve this question
Can you please show us the full, uncut console output as well? Note that you have to format it as code (Ctrl-K after selecting). –  slhck Sep 2 '13 at 5:48
add comment

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.