Allows volume adjustment of individual tabs, suggests ideal volume for videos based on data from other user's inputs
Volume Adapt is an extension to keep track of volumes from different tabs that are currently playing audio. It also retrieves an average volume based on inputs of different users, which you can also contribute to - If the video is too loud, lower the volume to an appropriate level. If the video is too quiet, vice versa.
Only functional on YouTube as of now, support for different audio based platforms will be available soon.
Functionality to add and retrieve volumes that you've submitted (per user) will be added in the near future.