I'm using Kubuntu and need to increase my volume beyond 100% on many youtube videos, because the recording level was too low, and my speaker is capable of generating much louder volume.

  • this is a reasonable idea (volume compression) - pavucontrol can do it. Just to check though - have you checked the volume button next to the "play" button on youtube? On crunchyroll, there's this stupid volume button that I seem to have repeatedly clicked without realizing it, just one click is enough to set a random volume, so I'm wondering if you've managed to do something similar on Youtube. – sourcejedi Jun 6 '18 at 18:49
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    I've checked Youtube volume, KDE's volume, and the Speaker Volume. There is a series of tutorials I'm watching from a particular publisher, and they recorded the series with too low of an input from the mic, apparently – user12711 Jun 7 '18 at 20:14
ffmpeg -i inputfile -vcodec copy -af "volume=10dB" outputfile 

would increase volume by 10dB

VLC allows you to watch a network stream, you enter a youtube URL and you can increase the volume to 125% - I read to 200%.

  • Is there a way to amplify the sound real time, as it streams from the Internet as Youtube does? – user12711 Jun 8 '18 at 14:03
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    I believe there is you need to look at sox IIRC. – Gerard H. Pille Jun 8 '18 at 19:34
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    But VLC will take you a long way and with much less hassle. – Gerard H. Pille Jun 8 '18 at 19:54

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