Browser FFmpeg recipe

Change Audio Volume Online with FFmpeg

Create an audio file with volume boosted to 150 percent.

Open this command in FFmpeg WebBrowse recipes

Command

Run this FFmpeg command

ffmpeg -i input.mp3 -af volume=1.5 -b:a 192k volume-adjusted.mp3

When to use it

  • quiet recordings
  • volume matching
  • quick gain changes

How it works

  1. Upload the audio file.
  2. Change the volume multiplier if needed.
  3. Run FFmpeg and download the adjusted audio.

Option reference

OptionWhat it does
volume=1.5Multiplies volume by 1.5.
-afRuns an audio filter.
-b:a 192kSets MP3 output bitrate.

Practical notes

  • Values above 1.0 increase volume and values below 1.0 reduce it.
  • Large boosts can cause clipping if the source is already loud.

FAQ

How do I reduce volume by half?

Use volume=0.5.

Can I use this on video?

Yes. Use a video file as input and add video copy settings if you want MP4 output.

Related FFmpeg recipes

Normalize audioFade audioMix audio with video