Batch extract audio with avconv

view story

http://askubuntu.com – I have about 70 mp4 files, and I want to extract the audio files directly without transcoding further. All the mp4 files have aac audio files. I understand I can use the following command to extract the audio file from one of the mp4 files: avconv -i "INPUT FILE" -map 0:1 -c:a copy "OUTPUT FILE" How do I extract all the audio files from all the 70 mp4 files, so I end up with 70 aac files? (HowTos)