[1.Description]: [Aries KK][v2.5][Video]When playing a 'mp4' video, tapping home button and then reopen video app, sometimes the '.mp4' video can't continue to play, and the Play/Rewind/forward button is unavailable, and video playing screen is shown black. Found time: 17:06 Attach: Aries_v2.5.3gp and logcat_1706.txt Test file: Gee_h264-320x240.mp4 [2.Testing Steps]: Precondition: Have some '.mp4' videos. 1. Launch Video. 2. Play a '.mp4' video. 3. Tap Home button. 4. Tap video app again. 5. Tap 'Play' button. 6. Repeat step 3&4&5 [3.Expected Result]: Step 5&6. All '.mp4' videos can continue to play after tapping home button and then reopen video app. [4.Actual Result]: Step 5&6. Sometimes some '.mp4' videos can't continue to play, and the video play control bar (Play/Pause/Rewind/Forward button) is unavailable, and it shows black screen. [5.Reproduction build]: Device: Flame KK 2.2 (Unaffected) Build ID 20151009032504 Gaia Revision 885647d92208fb67574ced44004ab2f29d23cb45 Gaia Date 2015-10-07 13:05:24 Gecko Revision https://hg.mozilla.org/releases/mozilla-b2g37_v2_2/rev/ab6c34bfacf7 Gecko Version 37.0 Device Name flame Firmware(Release) 4.4.2 Firmware(Incremental) eng.cltbld.20151009.064635 Firmware Date Fri Oct 9 06:46:46 EDT 2015 Firmware Version v18D v4 Bootloader L1TC000118D0 Device: Flame KK 2.5 (Unaffected) Build ID 20151009150221 Gaia Revision 1609aecaba381c14eff95d5084e59280f53b7d8b Gaia Date 2015-10-09 07:16:19 Gecko Revision https://hg.mozilla.org/mozilla-central/rev/c00e93135684441d065791f4f98a338b872d0420 Gecko Version 44.0a1 Device Name flame Firmware(Release) 4.4.2 Firmware(Incremental) eng.cltbld.20151009.183801 Firmware Date Fri Oct 9 18:38:15 EDT 2015 Firmware Version v18D v4 Bootloader L1TC000118D0 Device: Aries KK 2.5 (Affected) Build ID 20151010002512 Gaia Revision 74b0d4b17f39d238a7997800bd9363d3c60f20c3 Gaia Date 2015-10-09 19:27:39 Gecko Revision https://hg.mozilla.org/mozilla-central/rev/d1bb0de19476541cd517ab14017e7fedbd9f13e3 Gecko Version 44.0a1 Device Name aries Firmware(Release) 4.4.2 Firmware(Incremental) eng.worker.20151009.234251 Firmware Date Fri Oct 9 23:42:59 UTC 2015 Bootloader s1 [6.Reproduction Frequency]: occasionally Recurrence,6/8 [7.TCID]: Free Test [8.Note]: On latest Flame KK v2.5, I can't repro this bug after 50 attempts, in step5&6 somtimes it will show black screen but video still can be played and the Play/Pause/Rewind/Forward button is available.

The black screen bug could be related to https://bugzilla.mozilla.org/show_bug.cgi?id=1199809

Adding qawanted for reproducing in the latest 2.5 branch

We have no Aires KK v2.5 build temporarily in recent days, and I can't repro this bug on latest Aries KK v2.6 by the STR in comment 0 (Rate: 0/15). I will check this bug when we have the latest Aires KK v2.5 build in the near future, so leaving the "qawanted" keywords. Device: Aries KK 2.6 (master)(Pass) Build ID 20151104004249 Gaia Revision 61918ddd9ccce104c009e873e34a0791e125753a Gaia Date 2015-11-03 17:22:30 Gecko Revision https://hg.mozilla.org/mozilla-central/rev/f742b9412ed5aace90ad863b276faae0641090a8 Gecko Version 45.0a1 Device Name aries Firmware(Release) 4.4.2 Firmware(Incremental) eng.worker.20151104.000116 Firmware Date Wed Nov 4 00:01:24 UTC 2015 Bootloader s1 Build ID 20151105105137 Gaia Revision e68d693cb55fb5d8946498eb2bdb63f55116d38e Gaia Date 2015-11-05 01:05:27 Gecko Revision n/a Gecko Version 45.0a1 Device Name aries Firmware(Release) 4.4.2 Firmware(Incremental) eng.rose.20151103.153542 Firmware Date 2015-11-03 Tuesday 15:36:03 CST Bootloader s1

This bug can't be repro on latest Aries KK v2.5 by the STR in comment 0 (Rate: 0/20), so I close this bug. If anyone can repro it, please reopen again, thanks. Device: Aries KK 2.5 (unaffected) Build ID 20151107112205 Gaia Revision 577948202ae12154524a2bd2bd6d467838ad50b8 Gaia Date 2015-11-07 10:00:59 Gecko Revision http://hg.mozilla.org/releases/mozilla-b2g44_v2_5/rev/ae7b8b1fd9e1504347b938820f99d75058049386 Gecko Version 44.0a2 Device Name aries Firmware(Release) 4.4.2 Firmware(Incremental) eng.worker.20151107.104119 Firmware Date Sat Nov 7 10:41:27 UTC 2015 Bootloader s1