People report that YouTube HTML5 video using MSE will work if you change your NoScript settings to allow 'mediasource:'.
I'm aware of this issue, already evaluated the security implications and decided to handle mediasource: exactly the same as blob:, i.e. whitelisting it by default. It's gonna be the default in next release, due in a couple of days.
Thanks, Giorgio! This problem actually breaks any website playing HTML5 video with MSE, not just YouTube.
(In reply to Chris Peterson [:cpeterson] from comment #2) > Thanks, Giorgio! > > This problem actually breaks any website playing HTML5 video with MSE, not > just YouTube. Does the "media.mediasource.youtubeonly" preference being set to true mean that it's still a YouTube-only problem on Firefox 37 at least?
Could you please check whether 184.108.40.206rc1 does what's intended to do (i.e. fixes this issue)? https://noscript.net/getit#devel Thanks!
(In reply to Giorgio Maone from comment #3) > Does the "media.mediasource.youtubeonly" preference being set to true mean > that it's still a YouTube-only problem on Firefox 37 at least? This is not a YouTube-only problem. The "media.mediasource.youtubeonly" has been renamed to "media.mediasource.whitelist" and the current list of MSE-allowed domains is here: https://mxr.mozilla.org/mozilla-central/source/dom/media/mediasource/MediaSource.cpp#376 (In reply to Giorgio Maone from comment #4) > Could you please check whether 220.127.116.11rc1 does what's intended to do (i.e. > fixes this issue)? > https://noscript.net/getit#devel With dev build 18.104.22.168rc1, YouTube HTML5 video plays correctly! I can reproduce the problem with NoScript stable version 22.214.171.124, but I have to manually set my Flash plugin to "Never Activate" and opt into YouTube HTML5 (https://www.youtube.com/html5) because YouTube is temporarily defaulting all Firefox versions and platforms to Flash video.
Anthony will test whether NoScript blocks EME.
This site is blocked http://people.mozilla.org/~cpearce/mse-clearkey/ but I'm guessing that is what is intended.
Tracking as this impacts MSE and is one of the bugs that caused us to revert to Flash for 37.
tracking-firefox37: --- → ?
tracking-firefox38: --- → +
tracking-firefox39: --- → +
tracking-firefox40: --- → +
NoScript version 126.96.36.199 with the mediasource fix is live on AMO so we no longer need to track this issue. https://addons.mozilla.org/en-US/firefox/addon/noscript/versions/?page=1#version-188.8.131.52
Status: NEW → RESOLVED
Last Resolved: 4 years ago
tracking-firefox37: ? → ---
Resolution: --- → FIXED
cf comment #9
tracking-firefox38: + → -
tracking-firefox39: + → -
tracking-firefox40: + → -
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