Control Volume With Extension

(Shoeb1137306174) #1

I Am making An extension for people with hearing problem…
and i want to control the volume of audio and video playing . any documentation on volume api for extension(add-on)

(Martin Giger) #2

The way you control the volume of things is to use a content script and find the audio/video elements and then modify their volume.

See and

There are also related properties on Tabs: specifically audible and muted.