Prevent videos from playing automatically

[mehdifirefox]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• This is NOT a YouTube, Facebook or Twitch report. These sites MUST be reported by clicking their respective links.
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• The issue is not present after disabling uBO in the browser.
• I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• uBO is the only extension.
• using a new, unmodified browser profile.

Description

I don't know if this is a bug or a request for a new feature
Because I think you should have added this important item by now

Advertising videos are played automatically
Like the site theregister.com

A specific URL where the issue occurs.

n/a

Steps to Reproduce

n/a

Expected behavior

n/a

Actual behavior

n/a

Configuration

n/a

[MasterKia]

• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.

Duplicate of #1421

[gorhill]

Advertising videos are played automatically
Like the site theregister.com

I don't see videos at https://www.theregister.com/, so let alone autoplaying videos.

A specific URL where the issue occurs.
n/a

I will mark the issue as invalid, no case of an issue was really made.

[uBlock-user]

Permissions Policy support was added, but it doesn't work when it comes to autoplay, does it ?

[iam-py-test]

According to MDN, permissions policy is supported by Chromium but not Firefox: https://developer.mozilla.org/en-US/docs/Web/HTTP/Permissions_Policy#browser_compatibility

[uBlock-user]

So is autoplay blocked on Chromium through permissions policy ?

[iam-py-test]

According to MDN, yes. I can't get it to work when testing, but that's probably user error.

[stephenhawk8054]

For vimeo iframe, maybe this:

||player.vimeo.com/*autoplay=1^$frame,removeparam=autoplay

[krystian3w]

Permission Polices may need disable load unsized media like detected in the past @garry-ut99:

||dailymotion.com^$permissions=autoplay=()|unsized-media=()

So far, no one has complained that the site is broken or that the embedded video is not playable at all.

Maybe dimisa-ruadlist have scriptlet idea for other players than Vimeo.

[MasterKia]

Permissions to disable autoplay on Chromium hasn't worked in a long time.