1504533 - Since upgrade to 63.0 (on Ubuntu): about:config > media.autoplay.enabled=false > doesn't prevent HTML5 media from autoplaying

Status: RESOLVED DUPLICATE of bug 1502349

(Core :: Audio/Video: Playback, defect)

Description

[u627621]

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/70.0.3538.77 Chrome/70.0.3538.77 Safari/537.36

Steps to reproduce:

Having set the media.autoplay.enabled=false, via about:config.
Load various news websites with media content, and note that audio and video playing automatically.
For example: 

Audio:
LBC Radio: https://www.lbc.co.uk/london/radio/player/

Video:
Daily Mail: https://www.dailymail.co.uk/news/article-6350597/Has-Theresa-secured-breakthrough-seal-Brexit-deal.html
(scroll down to the video)

Before the UPGRADE to 63.0 both of these examples required user input (click play button) for the media to run.


Actual results:

Audio and Video played automatically.


Expected results:

Audio and Video should NOT have played automatically.

Comment 1

[u627621]

I'm using Chromium to submit the bug, but the issue exists on Firefox...
Actual User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0