FFmpeg is a great command-line tool for dealing with audio and video files. Here are a couple of useful commands:
Extract audio from a video$ ffmpeg -i video.mp4 -q:a 0 -map a audio.mp3Concatenate multiple videos into a single file
First, create a file containing the list of videos to concatenate, and then pass it through ffmpeg:
$ cat list.txt file '/path/to/file1.mp4' file '/path/to/file2.mp4' file '/path/to/file3.mp4' $ ffmpeg -safe 0 -f concat -i list.txt -c copy output.mp4
Related post:
FFmpeg Cheatsheet
