How to stop YouTube videos from playing on startup?

[g_bartsch]

If I have a YouTube video in a tab, and close, and start Vivaldi, that video will start playing as soon as Vivaldi is loaded. How can I change this behavior so YouTube videos don't start upon Vivaldi start? Thank you.

Sorry I looked but could not find an answer.

[Ayespy]

@g_bartsch I think if you set to lazy-load restored tabs on startup, the youtube tab will not load until you select it. I have not tried this, as I never shut down with anything playing - but I do have restored tabs set to lazy load, except for pinned tabs, which I have set to always load on startup.

[g_bartsch]

@ayespy Thanks. I do have lazy-load restored tabs on startup checked. And like you I have pinned tabs set to load on startup.

The video doesn't have to be playing when I stop Vivaldi for it to start when I start Vivaldi. The video jut has to be in a tab that was selected when the browser was shut down. Since I have one widow will only YouTube tabs in it, when I start Vivaldi a YouTube always starts.

[Ayespy]

@g_bartsch Ah. Yes, the selected tab will always load. Youtube is mostly HTML5 these days, I think, and Vivaldi presently can't stop HTML5 media from auto-starting. I think there is an extension that has this ability, though.

[mib2berlin]

@g_bartsch
Hi, I use Disable HTML5 Autoplay extension.
It even stop play if Auto Play is enabled in Youtube setting.
It is vivaldi://flags/#autoplay-policy but I did not test this.

Cheers, mib

[g_bartsch]

@ayespy Thank you for explaining. I will look for that extension.

[g_bartsch]

@mib2berlin said in How to stop YouTube videos from playing on startup?:

Disable HTML5 Autoplay

Thank you! I may try this extension. But the flag looks promising. The warning scares me though

[Hadden89]

@g_bartsch Tested the flag some time ago.
Never worked to me. The extension should.

Fun(?) fact: chrome://flags, a lot of time ago, had in the warning "can cause spontaneous combustion of the browser" (or something similar)

[Steffie]

@mib2berlin said in How to stop YouTube videos from playing on startup?:

I use Disable HTML5 Autoplay extension.

Me too, for years, in all my chromium browsers. Nothing else solved this annoying behaviour for me.

[g_bartsch]

@hadden89 said in How to stop YouTube videos from playing on startup?:

"can cause spontaneous combustion of you and your cat"

I like this type of warning.

[g_bartsch]

@g_bartsch @mib2berlin @Steffie

Should I choose the second? The first says it's not maintained.

[Hadden89]

@g_bartsch Me too. I'm not sure about the cat. Then they removed the fun part. And now I can't have a burning browser. How sad.
They also removed "Careful, these experiments may bite", which was quite hilarious.

[mib2berlin]

@g_bartsch
I use the old one.
The "Reloaded" is a fork but I can fine link to source code and only 3500 user use it.
I´ll check the new one next days.

Cheers, mib

[g_bartsch]

@mib2berlin If the old one still works I'll likely use it. Thanks.

[Awpii]

There's an option in the video configurations for youtube that says "Auto-play" you just click that lol.

[iAN CooG]

@awpii If that worked, no extensions would be needed. The problem is not only in YouTube, but all videos/musics that start playing by loading a page containing HTML5 players.
@g_bartsch: Anyway be aware that some of those extension cause problem in some Youtube videos, as described in this thread
https://forum.vivaldi.net/topic/32118/your-browser-does-not-currently-recognize-any-of-the-video-formats-available-youtube/
If a video doesn't start, try disabling the extension temporarily.

[Awpii]

@ian-coog Works for me, might want to do a bit of troubleshooting.

[g_bartsch]

@ian-coog said in How to stop YouTube videos from playing on startup?:

Anyway be aware that some of those extension cause problem in some Youtube videos

Yes, I shall play with this when I don't mind some funny behavior. Thank you.

[Dr.Flay]

The built-in option to disable autoplay in youtube does not work for me either, so I have it set with an all-in-one enhancer for youtube (still developed)
https://www.mrfdev.com/enhancer-for-youtube