This uses FFMPEG to extract (not re-encode) the audio tracks from a video container like mp4 or mkv. It will save the file with an extension consisting of the name of the audio codec
This will crawl through the current directory and EXTRACT the audio track of the given video files. Provide it with the video filename extension that you want it to search for and process. Examples are mp4 or mkv
Usage: extractAudioFromVideoFiles.sh videoFileExtension directoryToProcess
Don't put periods before the file extensions.