FFMPEG - Manipulate Audio Volume
The following command will increase audio volume. Change to volume=0.5 to halve its normal volume, or volume=2.0 to increase the normal volume two times.
ffmpeg -i input.mp3 -af 'volume=2.0' output.mp3
The following command will increase audio volume. Change to volume=0.5 to halve its normal volume, or volume=2.0 to increase the normal volume two times.
ffmpeg -i input.mp3 -af 'volume=2.0' output.mp3