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

[garry-ut99]

Also duplicate of:

• dailymotion.com: nuisance uAssets#25007

[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.

[garry-ut99]

I don't see videos at

There are videos on that site, and some of them autoplay, example videos:

• A) https://www.theregister.com/2024/08/01/a_fresh_approach_for_container/ (embed vimeo, autoplay) or
  https://www.theregister.com/2024/07/30/ai_era_datacenters_need_aiready/ (embed vimeo, autoplay)
• B) https://www.theregister.com/2024/08/28/google_doom_ai/ (embed youtube, no autoplay)

autoplay might also depend on user's side settings.

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Advertising videos

However I can't reproduce any video ads in the above links as a guest (means I'm not logged in neither into the register.com, nor into youtube / vimeo), maybe the video ads might appear for logged users only or depend on GEO location.

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A specific URL where the issue occurs: n/a

Lack of a link by OP, makes it hard to determine whether what OP reported is really a feature request or a filter issue:

• if OP gets video ads, then maybe it belongs to filter issues and should be reported and fixed in uAssets tracker,
  (in case of video ads in embed youtube, then to be reported on uAssets: 🟥 ALL YouTube issues: D-O-N-'T COMMENT without reading the 1st post🟥 (closed - March 2025) uAssets#20586)
• but given OP excluded it to be a filter issue by ticking two first template checkboxes, and not filling any additional informations, the default assumption is to be made that OP meant a new feature, until he provide a link to a video which will turn out to be a filter issue

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In any case, insufficient info from OP makes it hard to determine what the real issue is about, in such a case, it can be labeled by one of many labels:

• "duplicate" (if assumption is that it's to be a feature request)
• "filterlist (if assumption is that it's to be a filter issue)
• "invalid" (if no assumption is to be made)
• "feedback needed" or "information needed" (if no assumption is to be 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