When I’m browsing the internet and watching video clips, the sound level (for me) is quite low.
If I go to Preferences>Sound>Applications, I can see that while the a video is playing there is an option to change the audio level.
I’ve noticed that whether it’s Firefox or Qupzilla, the level is always 79%. I can manually increase it to 100%, but the next video I play (without closing the browser) will again be 79%.
Is there some way I can force it to a default level of 100%?

Searching the web for "firefox default sound level" produced this article on how to set the default HTML5 video volume on Firefox (although it mentions that, at the time of writing, it didn't work for YouTube videos):

http://www.ghacks.net/2016/06/04/fir...-video-volume/

1 members found this post helpful.

Hello again hydrurga!

I really didn't realise the volume was a function of Firefox. I was baffled why setting it to 100% in Mint preferences, it didn't remember the setting.
Looking at the link you very kindly provided, I see my Firefox config was already set to 1.0 (100%) anyway.
Using the test videos in the HTML5 page, they all play at 100% (I checked by keeping the Sound Applications window open while loading each one).

However, when I go back to "real life", all the videos in newspaper/media websites all still open at 79%, and I need to manually increase each one while it is playing.

So rather than get involved in another long discussion on this which might end up with you pulling your hair out (I'll save that for another time!), I think I'll accept that it's sadly not something I am likely to be able to control - frustrating as it is.

Thanks very much for your reply.

Ah, Mr Paxolin, vee meet again! (said in the best Bond villain voice ;-))

I think that one of the problems is that there are so many ways of serving video/audio. I've had a look but there don't appear to be any suitable Firefox add-ons to cover the gamut. Perhaps as html5 video becomes more widely adopted then the situation will improve.

Just so I can have a quick look, can you post the URL of an example page with a 79% video?

Here you go, OddJob, just click on the video to start it playing:
http://news.sky.com/video/there-goes...storm-10772370

That's strange because I'm not seeing any audio controls on that video at all, just the ability to turn the audio off and on by clicking on the speaker icon on the bottom of the video. Where are you seeing the volume control?

Here, in Mint settings: Preferences>Sound>Applications

Ah, I've got you now. In that case, I've been leading you up the garden path as it looks as if it probably is a Mint or audio setting, not a Firefox one. You should retract that "Did you find this post helpful?" point you gave me earlier on!

I'll have a look at it...

Just a quick note that I think the problem is related to pulseaudio's handling of audio volumes for separate applications. For some reason the volume you choose just isn't sticking, although the documentation says it should.

I did have a look at loading pulseaudio's module-match (as referred to at https://bbs.archlinux.org/viewtopic.php?id=196044) to set the Firefox-sourced volume but it didn't seem to work at first glance and then borked my sound completely (it was a VM so no worries), so I gave up. Hopefully someone else might take it up from there but, now speaking from experience, you should backup your system before fiddling with pulseaudio.

OK, thanks for pursuing it further. Like you say, hopefully someone might offer up more information on this.

Seeing as you were a garden path enticer, I was going to remove the previous "Did you find this post helpful?" point as you suggested, but I couldn't find any Tippex.

No problem. The next time I help you, no matter how system-saving useful it is, don't click on the helpful post link and we'll be quits.