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Boost Audio of Video File

Install FFMPEG​

sudo apt-get install ffmpeg

Boost Audio​

ffmpeg -i input.mkv -filter:a "volume=2.0" -c:v copy output.mkv

Explaination

  • -i input.mkv: This specifies the input file.
  • -filter:a "volume=2.0": This filter increases the audio volume by 2x. You can adjust the 2.0 to other values (e.g., 1.5 for a 50% boost, 3.0 for 3x the volume).
  • -c:v copy: This copies the video stream without re-encoding it, so only the audio is processed.
  • output.mkv: The output file with boosted audio.

A new file will be created with the boosted audio. For some of my audio files I needed to use a boost of 10.0 so it may take a few tries to get it right.