User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0 Build ID: 20170616092053 Steps to reproduce: Go to http://www.tutorialrepublic.com/codelab.php?topic=html5&file=video-element Actual results: The poster image on top of the video will be "grayed", there is some kind of opacity on it. Expected results: There should not be any opacity. Chrome and Edge works fine (use them to compare the image). This opacity problem doesn't look nice. Problems happens in Firefox in Linux and Windows.

This isn't an audio playback issue. It's a design one. It's a matter of guess I guess. The video isn't playing.

Yes, it's a design issue, not about playback. Here's an image that shows Chrome, Edge and Firefox, I think it looks much better in Chrome and Edge. https://s23.postimg.org/pg5pch2u3/firefox-chrome-edge-html5-video-image-poster.jpg Haven't found a way to remove this opacity, looks like it's built-in into Firefox.

ralin, can you investigate this? I have seen in on occasion too but I don't have reliable STR.

The grey overlay is by design for the visual refresh[1], but I think it's fine to make it transparent and behave like Chrome and Edge. [1] http://searchfox.org/mozilla-central/rev/2c9a5993ac40ec1db8450e3e0a85702fa291b9e2/toolkit/themes/shared/media/videocontrols.css#84-86

Hi Gijs, Could you help me to review this patch? Thanks.

Comment on attachment 8908479 [details] Bug 1374007 - Remove grey overlay of media controls before media start to play. https://reviewboard.mozilla.org/r/180138/#review185302 ::: commit-message-831e9:1 (Diff revision 1) > +Bug 1374007 - Remove grey overlay of medai controls before media start to play. r=Gijs nit: s/medai/media

Comment on attachment 8908479 [details] Bug 1374007 - Remove grey overlay of media controls before media start to play. https://reviewboard.mozilla.org/r/180138/#review185304

Thank you Jared, :jya typo fixed.

Autoland can't push this until all pending issues in MozReview are marked as resolved.

Pushed by jyavenard@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/2125fac068a6 Remove grey overlay of media controls before media start to play. r=jaws

Thanks again :jya

Build ID: 20170919220202 User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0 Verified as fixed on Firefox Nightly 57.0a1 on Windows 10 x 64, Mac OS X 10.12 and Ubuntu 16.04 x64.