To remove background noise in VLC, follow these steps:
Open VLC media player and play the video with background noise.
Click on "Tools" in the menu bar and select "Effects and Filters."
Navigate to the "Audio Effects" tab and then to the "Compressor" tab.
Enable the compressor by checking the "Enable" box.
Adjust the settings such as Threshold, Ratio, Attack, and Release to reduce background noise. You may need to experiment with the settings to find the optimal values for your video.
Click "Save" to apply the changes.