You can detach audio from your video to get the music file and use it elsewhere. That means you can film a concert with your mobile device and later make an MP3 of your favorite piece of music using Filmora. Detaching audio with Filmora is a walk in the park: all you have to do is follow the steps below:
How to Adjust Audio Volume
How to Detach Audio of Multiple Clips
You can use Filmora to detach audio from multiple video clips. Drag and drop all the videos into the timeline. Then, select all the video clips with your mouse. Next, right-click and choose the Detach Audio option. Filmora will detach the audio from these video clips and move them to an audio track.