user26858: 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?

user24627: When using sound for speech-to-text, the quality is actually not very important. You can extract audio using ffmpeg, After Effects, Premiere, Nuke, Resolve or any editing software you like. Load in the clip, export again but as a .wav. Boom, you have only the sound.

user26892: 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.

26858: <p>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).</p>

<p>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.</p>

<p>What tools are available for this? Can VLC do it? Some online service?</p>

<hr>

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

<p>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:</p>

<p><a href="https://wiki.videolan.org/VLC_HowTo/Extract_audio/" rel="nofollow noreferrer">VLC HowTo/Extract audio</a></p>

<p>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.)</p>

<p>Is this perhaps not the right group to ask this question in?</p>
 24627: <p>When using sound for speech-to-text, the quality is actually not very important. You can extract audio using ffmpeg, After Effects, Premiere, Nuke, Resolve or any editing software you like. Load in the clip, export again but as a .wav. Boom, you have only the sound.</p>
 26892: <p>If you aren't adverse to using a terminal to extract it, <a href="https://www.ffmpeg.org/" rel="nofollow noreferrer">FFmpeg</a> is a very good tool that you can use. The command that you'd want to run in <code>ffmpeg -i [input file name here] -c:a copy -vn -sn [output file name here]</code>.</p>

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

<p>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.</p>
