Extracting audio from a video is incredibly easy if you have a file conversion app. You can take almost any sort of video and convert it to MP3 to get just the audio. If, on the other hand, you want to remove audio from a video, it might seem a little tricky. A quick search might give you suggests for various apps that can do the trick but all you really need is VLC player.
Need to create a video, or more precisely a screencast? VLC player has you covered.
Remove audio from a video
Open VLC player from the Media menu in the title bar, and select Convert/Save.
On the Open Media window, click the Add button and select the video that you want to remove audio from, and then click the dropdown arrow next to the Convert/Save button. From the dropdown menu, select the Convert option.
This will open a new window. On this window, you will see a Profile field. Click the wrench button. This will open the Profile edition window. Give the profile a name, any name. Go to the Audio Codec tab, and make sure that the Audio option is unchecked. Click Create to return to the previous window. Give the file a name in the Destination File field and click the Start button.
You won’t see the video play in VLC player however the seek bar that normally shows video progress will show you conversion progress. The conversion won’t take too long unless you have a file that is hours long. Once it’s done, open the same location where the original file is saved and you will find a copy of it with the audio removed.
The output file is the same quality as the original, minus the audio. You can also use the same conversion window to change the output format of the video. The Profile Edition window is where you can select a different codec for converting the video. You should read up on which codecs are best for converting to certain file formats and then pick the right one.
We mentioned earlier that you can extract audio from a video by converting it to an MP3 file. If that’s what you need to do then you can use VLC player for that as well. Follow the above method but instead of leaving the Audio codec unchecked, check it and from the Codec dropdown, select MP3. Start the conversion and a new file containing only the audio from the video will be created. It shouldn’t take too long but again, as with the audio removal, if the file is hours long, it can take a while to convert to MP3.