Extract audio from video preserving audio quality I need to extract sound from videos. There must be know loss of quality (since the sound files will be used in speech-to-text services).

So I want to extract the audio from the video exactly as it is and then place it in a new container to create an audio file.

What tools are available for this? Can VLC do it? Some online service?



EDIT: Please notice that I want to extract the sound exactly as it is from the video (so I do not loss quality). 

And I tested this with the GUI version of VLC, but I did not see any way to do what I want there. However I just found this page that says you can do it from the command line with VLC:

VLC HowTo/Extract audio

Since I am not going to do this myself, but tell my users how to do it I am looking for an easy way for them. (They are not programmers. But I am. So I can perhaps write a version myself with ffmpeg, but I want to avoid that if I can.)

Is this perhaps not the right group to ask this question in?
If you aren't adverse to using a terminal to extract it, FFmpeg is a very good tool that you can use. The command that you'd want to run in ffmpeg -i [input file name here] -c:a copy -vn -sn [output file name here].

-c:a copy: This argument copies the audio stream of the file.
-vn: This argument informs FFmpeg to not account for any video streams.
-sn: This argument informs FFmpeg to not account for any subtitle streams.

Altogether, this results in a lossless extraction of the audio stream from the video file. If you have some knowledge in making scripts, you could create a script that will perform this action for a set of files so that you don't need to do it manually.