Simple Steps to Capture Audio from MP4 File

You can also capture audio from MP4 file, as MP4 is a container format that supports various codecs.
However, the audio capture feature in the MP4 container format is not enabled by default.
This can pose a problem, especially if you are using older versions of the MP4 container format.

• The MP4 format is one of the most popular choices for video and audio files on the Internet.
• The MP4 audio format is an audio codec that compresses audio streams into files.

Use VLC Player

1. Download VLC Player, install it, and open the video file.
2. Press Ctrl + Shift + A or go to Tools > Preferences > Audio > Input.
   
3. Select Capture, and then choose the desired audio device.

Install VLC Media Player

2. Launch VLC on Windows 10.
   
3. Select Media from the VLC menu.
4. Select the Media Devices option.
5. Select Capture Device from the Media Devices menu.
6. Select Open Capture Device from the Media Devices menu.
   
7. Select “DirectShow Device” option.
8. Click on Add to open the Device Selection window
9. Select Microphone as your input.
10. Click on OK to save the device configuration.
    
11. Launch VLC Media Player.
12. Select Media from the VLC menu.
13. Select Media Devices option.
14. Select Capture Device from the Media Devices menu.
15. Click on Edit to open the Device Selection window.
16. Select Microphone as your input.
17. Click on OK to save the device configuration.
    

Use MP4Box

1. MP4Box is a free, open source, and cross-platform video/audio player. It supports decoding of most commonly used codecs like x264, xvid, and h.264.
2. Download MP4Box from here.
   
3. Open MP4Box.
4. Navigate to the File menu and click Add.
5. Choose a MP4 video file, and click Open.

Edit the MP4 file

1. Open MP4 file using VLC or any other media player.
2. Click on Add File button and navigate to the MP4 file on your PC.
   
3. Click Open to add MP4 file to VLC Media player.
4. Afterwards, click on Media.
5. Go to Tools and select Preferences.
6. From the Preferences window, select Input / Codecs.
   
7. Click on Audio Codecs and select the AAC-LC codec.
8. Click on Save and then OK to save the changes.
9. Now, click on the Gear icon and select Convert/Save.
10. Select Audio Output.
    
11. Select the AAC-LC codec.
12. Click on Convert/Save.