firefox dont block video play even if autoplay is prohibited

[tos18]

Lot of articles in www.onet.pl portal have embedded videos. I dont want play this videos.
my default privacy settings are set to block audio and video and no exceptions are set.(only about:welcome but it ant be deleted)

Unfortunatly videos still start to play automaticly.

Any suggestions welcome.

[Mizar]

Type in about:config and search for autoplay.

Set media.autoplay.blocking_policy to 1 and media.autoplay.default to 0

Tell me how it went.

[tos18]

No changes. Still start to play.

[Mizar]

Ok, now try toggling services.sync.prefs.sync.media.autoplay.default to false.

[tos18]

No changes. Still start to play.

[Agentvirtuel]

Hello

Try ?
media.autoplay.blocking_policy 1
media.autoplay.default 5

Other topic
https://connect.mozilla.org/t5/ideas/add-a-way-to-block-autoplay-video/idc-p/47186/highlight/true#M2...

[tos18 · Accepted solution]

that values was before i make changes suggested by @Mizar but now (after changes again) look like did his job. Autoplay stop on first frame

current settings:

services.sync.prefs.sync.media.autoplay.default - false

media.autoplay.blocking_policy - 1
media.autoplay.default - 5

thankyou for solution

[Mizar]

Glad to have helped.

[tos18]

I applied these settings on another computer. It works

[trennor]

Doesn't work on  my Mac, version 126.0; videos still autoplay?! I don't want autoplay, I want autoSTOP and none of these solutions work. I shouldn't have to DO this; there should be a working menu in settings for rather than mucking around in about:config, but that's disappeared, not that it worked anyway. This is ridiculous!

[Mizar]

@trennor 

Set media.autoplay.blocking_policy to 2 and media.autoplay.default to 5 (this one reenables the aforementioned option).

[trennor]

Okay, that finally got it; I'd previously set that value to 5 however some of the ways of doing that were put forward as wrong. I still think this is too convoluted a method as  this should be controlled by a simple on/off switch in settings; why is that so hard?!

[Mizar]

A myriad of reasons, one of them being Firefox on Mac can't use Gecko and is forced to use Apple's engine.
I do agree with you however, things should be less complicated as not everyone is a power user.

[Agentvirtuel]

Hello

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@tos18 wrote:

about:welcome

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For information purposes
https://connect.mozilla.org/t5/discussions/auto-play-settings/m-p/56020