Description: If the user mutes a youtube video, the player will automatically un-mute after approximately 1 minute. This issue does not appear to be related to the screen timeout, because it still occurred after only 1 minute, after I had increased the screen timeout to 2 minutes. The time also does not appear to be exactly 1 minute, as I have once seen it occur after only 56 seconds, so the time may not always be exactly the same. Repro Steps: 1) Update a Aries to 20160111111358 2) Open the Browser app and navigate to YouTube.com 3) Select a video that is at least 2-3 minutes long. 4) Begin playing the video, then mute the video. 5) Wait for the video to finish. Actual: After approximately 1 minute, the video will un-mute itself, and audio will begin playing again. Expected: The video remains mute and silent for the entire duration of the video. Environmental Variables: Device: Aries 2.6 Build ID: 20160111111358 Gaia: 260e51a4262f75341e037e583dfc8f6835b5ab31 Gecko: 5acc2a44834ce0614f98466475e674517daf0041 Gonk: a19052e4389c3ae2d8fc3e7a74a475401baacc56 Version: 46.0a1 (2.6) Firmware Version: D5803_23.1.A.1.28_NCB.ftf User Agent: Mozilla/5.0 (Mobile; rv:46.0) Gecko/46.0 Firefox/46.0 Repro frequency: 7/7 See attached: Video (URL). Logcat

This issue DOES occur on the latest Flame 2.6 and 2.5 builds. After approximately 1 minute, the video will un-mute itself, and audio will begin playing again. Environmental Variables: Device: Flame 2.6 [512MB] BuildID: 20160111030334 Gaia: 260e51a4262f75341e037e583dfc8f6835b5ab31 Gecko: 6020a4cb41a77a09484c24a5875bb221714c0e6a Gonk: 205ac4204bbbb2098a8046444acba551ba5dc75a Version: 46.0a1 (2.6) Firmware Version: v18D User Agent: Mozilla/5.0 (Mobile; rv:46.0) Gecko/46.0 Firefox/46.0 Environmental Variables: Device: Flame 2.5 [512MB] BuildID: 20160111203214 Gaia: 72bcc2dac977d2b916eaa78ec8d9caba2820dd74 Gecko: df1c9857053215e3fbcf5fa3693a718b9df64ba5 Gonk: 205ac4204bbbb2098a8046444acba551ba5dc75a Version: 44.0 (2.5) Firmware Version: v18D User Agent: Mozilla/5.0 (Mobile; rv:44.0) Gecko/44.0 Firefox/44.0 *************************************************** This issue does NOT occur on the latest Flame 2.2 build. The video remains mute and silent for the entire duration of the video. (tested using a 3:30 minute video) Environmental Variables: Device: Flame 2.2 [512MB] BuildID: 20160111032500 Gaia: 885647d92208fb67574ced44004ab2f29d23cb45 Gecko: d8847129d134 Gonk: bd9cb3af2a0354577a6903917bc826489050b40d Version: 37.0 (2.2) Firmware Version: v18D User Agent: Mozilla/5.0 (Mobile; rv:37.0) Gecko/37.0 Firefox/37.0

This is a bad end user experience so nominating this as a blocker.

Bug 1172264 seems to have caused this issue. B2g-inbound Regression Window Last Working Environmental Variables: Device: Flame 2.5 BuildID: 20150617093751 Gaia: 29e990805540fa4d1d03f1144bf9c95364ef6b51 Gecko: 1b5e08c07572 Gonk: 205ac4204bbbb2098a8046444acba551ba5dc75a Version: 41.0a1 (2.5) Firmware Version: v18D User Agent: Mozilla/5.0 (Mobile; rv:41.0) Gecko/41.0 Firefox/41.0 First Broken Environmental Variables: Device: Flame 2.5 BuildID: 20150617094949 Gaia: 29e990805540fa4d1d03f1144bf9c95364ef6b51 Gecko: a5eb0b1fcf39 Gonk: 205ac4204bbbb2098a8046444acba551ba5dc75a Version: 41.0a1 (2.5) Firmware Version: v18D User Agent: Mozilla/5.0 (Mobile; rv:41.0) Gecko/41.0 Firefox/41.0 Last Working gaia / First Broken gecko - Issue DOES occur Gaia: 29e990805540fa4d1d03f1144bf9c95364ef6b51 Gecko: a5eb0b1fcf39 First Broken gaia / Last Working gecko - Issue does NOT occur Gaia: 29e990805540fa4d1d03f1144bf9c95364ef6b51 Gecko: 1b5e08c07572 Gaia Pushlog: http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=1b5e08c07572&tochange=a5eb0b1fcf39

Bobby can you take a look at this? This seems to have been caused by the changes for bug 1172264. Also ni? on Alison to get this on her radar.

Thanks for let me aware of this issue.

don't see how this could have anything to do with the media stack. muting being handled by youtube JS. Especially the commit in question. I have my doubt that it's a gecko issue

It also doesn't happen on desktop