A native linux software that can increase the audio volume in a video file

General Help
1

I am looking for a native Linux software that can increase the audio volume of a video file.

2

The only link I found straight away led to a 404 error. So I had to resort to Brave A.I. Search engine.

" FFmpeg is the standard command-line tool in Linux for increasing video volume without re-encoding the video stream, which preserves quality and speed. The most common method uses the -af volume filter to adjust the audio level by a specific decibel (dB) amount or a linear multiplier.

To increase the volume by a specific decibel amount (e.g., +10dB) while copying the video stream:

ffmpeg -i input.mp4 -vcodec copy -af "volume=10dB" output.mp4

To increase the volume by a linear multiplier (e.g., 2x louder):

ffmpeg -i input.mp4 -vcodec copy -af "volume=2.0" output.mp4

Key Parameters:

  • -i : Specifies the input video file.
  • -vcodec copy : Copies the video stream without re-encoding, ensuring no quality loss and fast processing.
  • -af "volume=..." : Applies the audio filter. Use a positive dB value (e.g., 10dB ) or a multiplier greater than 1 (e.g., 2.0 ) to increase volume. Use negative dB or multipliers less than 1 to decrease it.

If the audio is extremely quiet and you need to determine the required gain, you can first analyze the file using volumedetect :

ffmpeg -i input.mp4 -af volumedetect -f null /dev/null

This outputs the max_volume (e.g., -20dB ), indicating you need to add at least 20dB to reach 0dB. You can then apply that value in the volume filter. Note that simply boosting volume via filters may introduce distortion or noise if the original audio is very low; for cleaner results, consider using an audio editor like Audacity to normalize or reduce noise before re-merging with the video.

AI-generated answer. Please verify critical facts."

3

I guess any video editor can enhance the audio of a video file if you don't want to use the terminal. You could try first with Pitivi and if it doesn't cut it, you can try with something more advanced like kdenlive.

4

Thanks. I will put all suggestions to the test.

5

I tried your suggestions and both are too advanced for me but I took away the idea to try a video editor and I tried Handbrake and it worked. Simple and easy to use. Thanks

6

I tried using the terminal but it didn't work for me.