How to Boost Volume Past 100% in mpv?

This article provides a quick overview of how to increase the audio volume beyond the standard 100% limit in the mpv media player. You will learn the specific runtime commands, keyboard shortcuts, and permanent configuration settings needed to amplify quiet audio files effectively without distortion.

The Volume Boost Command

In mpv, you can boost the volume up to a maximum of 1000% by modifying the volume-max property. By default, mpv caps the volume at 130% to prevent severe audio clipping, but you can override this limit.

To increase the volume during playback using the input console or an external script, use the following command property:

set volume-max 300

This specific command raises the maximum allowable volume ceiling to 300%. Once the ceiling is raised, you can use the standard volume controls to push the audio past the original 100% barrier.

Keyboard Shortcuts for Audio Boosting

You can dynamically adjust your amplification limits by editing your input.conf file. Adding the following lines allows you to raise and lower your maximum volume limit on the fly using your keyboard:

• ctrl++ add volume-max 10 — Increases the maximum volume limit by 10%
• ctrl+- add volume-max -10 — Decreases the maximum volume limit by 10%

Once your maximum limit is increased, simply use the standard 0 key to increase your current volume or 9 to decrease it.

Making the Volume Boost Permanent

If you want mpv to always allow volume boosting without typing a command every time you open a video, you can add the setting directly to your mpv.conf configuration file.

1. Locate your mpv.conf file (typically found in ~/.config/mpv/ on Linux/macOS or %APPDATA%\mpv\ on Windows).
2. Open the file in a text editor.
3. Add the following line to the file:

volume-max=300

Save the file and restart mpv. You will now be able to scroll or use your hotkeys to boost your audio up to 300% automatically for every media file you open.