Open the video in a video editing app or media converter
Import or load the video file
Select the audio track or mute the video track
Detach, extract, or separate the audio from the video
Export or save the audio as an MP3, WAV, AAC, or other audio format
Use a dedicated audio extraction tool if your editor does not support separation
On Windows, use VLC, Audacity, or HandBrake
On Mac, use QuickTime Player, iMovie, or GarageBand
On mobile, use a video editor or audio extractor app
If needed, convert the extracted audio to the desired format
Save the isolated audio file to your device
