Is there a addon available for Firefox that can help me to increase the volume of a video. I am trying to stream a few videos online which are based on university lecture. But the audio in that is very low. I am using my mobile headphones. I want some addon through which I can increase the audio more. I had tried to do that through a third party audio software but it is not working. I just want to increase the audio a bit so that I can understand the video.
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