1512362 - Should not allow video-without-audio-track to autoplay when pref "media.autoplay.allow-muted=false"

Status: RESOLVED FIXED

(Core :: Audio/Video: Playback, defect, P3)

Description

[Leman Bennett [Omega]]

1. Set media.autoplay.allow-muted;false

2. Visit any Gizmodo Family Website.

3. Revoke Permission "Autoplay Media With Sound".

3. Scroll to a Gizmodo video entry.

The video plays regardless of the setting.

Comment 1

[Andreas Pehrson [:pehrsons]]

Matthew, can you triage this?

Comment 2

[Matthew Gregan [:kinetik]]

While trying to repro this, I wasn't served any autoplaying video content when I tried scrolling through gizmodo.com.au's front page until I hit the "end" (page 5 shown in the location bar, a button to load more content appears).

Visiting jalopnik.com, I'm shown a video under "Recent Videos" that begins autoplaying only if I scroll it out of view and back into view.  If I also toggle media.autoplay.enabled.user-gestures-needed to false, it never starts autoplaying.  It seems unexpected that scrolling would be considered a user intention to allow the video to play, but I'm not familiar with the autoplay blocking policy.  I'll needinfo Alastor to get his input.

Comment 3

[Alastor Wu [:alwu]]

This issue is because we didn't check the pref "media.autoplay.allow-muted" when decide whether video without audio track can autoplay.

Comment 4

[Alastor Wu [:alwu]]

Attachment: Bug 1512362 - hook pref "media.autoplay.allow-muted" to all inaudible autoplay media policy

When talking about autoplay, video without audio track should also be controlled by the pref "media.autoplay.allow-muted".

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/dc450ef62331
hook pref "media.autoplay.allow-muted" to all inaudible autoplay media policy r=cpearce

Comment 6

[Bogdan Tara[:bogdan_tara | bogdant]]

https://hg.mozilla.org/mozilla-central/rev/dc450ef62331