In order to gather feedback on our block autoplay implementation, we'd like to enable it in Nightly only.

Comment on attachment 8993273 [details] Bug 1476853 - Don't block WebAudio autoplay by default. https://reviewboard.mozilla.org/r/258052/#review264978

Comment on attachment 8993274 [details] Bug 1476853 - Enable block autoplay on Nightly only on desktop. https://reviewboard.mozilla.org/r/258054/#review264990

Comment on attachment 8993275 [details] Bug 1476853 - Set autoplay to allowed for testing purposes. https://reviewboard.mozilla.org/r/258056/#review264994 thanks!

Comment on attachment 8993277 [details] Bug 1476853 - Remove obsolete use of media.autoplay.enabled. https://reviewboard.mozilla.org/r/258060/#review264996

:snorp is on PTO this week. Maybe ask :jchen for review?

(In reply to Randall Barker [:rbarker] from comment #10) > :snorp is on PTO this week. Maybe ask :jchen for review? OK, thanks!

Comment on attachment 8993276 [details] Bug 1476853 - Enable block autoplay v2 on Nightly only on Fennec by default. https://reviewboard.mozilla.org/r/258058/#review265252

Pushed by cpearce@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/ea9220c21a7b Don't block WebAudio autoplay by default. r=padenot https://hg.mozilla.org/integration/autoland/rev/7d8ce14346a3 Enable block autoplay on Nightly only on desktop. r=jya https://hg.mozilla.org/integration/autoland/rev/a44577a773a7 Set autoplay to allowed for testing purposes. r=jmaher https://hg.mozilla.org/integration/autoland/rev/82ace642ac7e Enable block autoplay v2 on Nightly only on Fennec by default. r=jchen https://hg.mozilla.org/integration/autoland/rev/8dcdd881fd09 Remove obsolete use of media.autoplay.enabled. r=rbarker

https://hg.mozilla.org/mozilla-central/rev/ea9220c21a7b https://hg.mozilla.org/mozilla-central/rev/7d8ce14346a3 https://hg.mozilla.org/mozilla-central/rev/a44577a773a7 https://hg.mozilla.org/mozilla-central/rev/82ace642ac7e https://hg.mozilla.org/mozilla-central/rev/8dcdd881fd09

Chris, since this is sticking on nightly, could you please request a release notes addition for Nightly? Thanks https://wiki.mozilla.org/Release_Management/Release_Notes#How_to_nominate_a_bug_for_release_notes_addition.3F

(Requesting release note via "relnote-firefox?" but that didn't autofill a comment here with. I had to find the questions from the YouTube video. I assume that's a recent regression in b.m.o) Release note request: Block autoplay media with sound enabled by default in Firefox Nightly on desktop and Android. [Why this is notable]: This changes the default behaviour to block autoplay enabled, previously disabled by default. [Affects Firefox for Android]: Yes [Suggested wording]: Firefox Nightly by default now prompts for permission before allowing pages to automatically play media with sound. [Links]: TBD

resetting relnote flag until this is enabled on release.

Any way to remove this feature for some url or on local filesystem (file:///) ? This is problematic when I have to make some tests on <audio>/<video> tags, making them play with javascript.

Verified, that block autoplay is enabled by default in Nightly.