[tbb-bugs] #29859 [Applications/Tor Browser]: Playing videos on Twitter is not working and freezing the mobile browser

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#29859: Playing videos on Twitter is not working and freezing the mobile browser
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-mobile, GeorgKoppen201904,       |  Actual Points:
  TorBrowserTeam201904R, tbb-8.5-must            |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by sysrqb):

 On API level 28, the video plays successfully:

 {{{
 04-10 20:31:23.570  2886  2910 W VideoCapabilities: Unrecognized profile 4
 for video/hevc
 04-10 20:31:23.593  2886  2910 I VideoCapabilities: Unsupported profile 4
 for video/mp4v-es
 ...
 04-10 20:31:33.895  1848  1865 I ActivityManager: Start proc
 3115:org.torproject.torbrowser_alpha:media/u0a376 for service
 org.torproject.torbrowser_alpha/org.mozilla.gecko.media.MediaManager
 ...
 04-10 20:31:34.457  3115  3130 W VideoCapabilities: Unrecognized profile 4
 for video/hevc
 04-10 20:31:34.496  3115  3130 I VideoCapabilities: Unsupported profile 4
 for video/mp4v-es
 04-10 20:31:34.529  3115  3134 I OMXClient: IOmx service obtained
 04-10 20:31:34.531  1718  2111 I OMXMaster:
 makeComponentInstance(OMX.google.aac.decoder) in omx at 1.0-service process
 04-10 20:31:34.552  3115  3134 I MediaCodec: MediaCodec will operate in
 async mode
 ...
 04-10 20:31:34.902  1718  1718 W OMXNodeInstance:
 [0xedaa6c60:google.h264.decoder] component does not support metadata mode;
 using fallback
 ...
 04-10 20:31:35.671  3115  3140 D SoftwareRenderer: setting dataspace on
 output surface to #103
 04-10 20:31:36.096  1996  2241 I OpenGLRenderer: Davey! duration=737ms;
 Flags=0, IntendedVsync=247180479682, Vsync=247180479682,
 OldestInputEvent=9223372036854775807, NewestInputEvent=0,
 HandleInputStart=2471890
 00051, AnimationStart=247189012334, PerformTraversalsStart=247189012745,
 DrawStart=247189869221, SyncQueued=247189906569, SyncStart=247245032677,
 IssueDrawCommandsStart=247245109814, SwapBuffers=247949524636, Fr
 ameCompleted=247973058364, DequeueBufferDuration=8072000,
 QueueBufferDuration=8073000,
 04-10 20:31:36.280  2886  2886 D GeckoToolbar: onTabChanged:
 MEDIA_PLAYING_CHANGE
 04-10 20:31:36.280  2886  2886 D GeckoBrowserApp: BrowserApp.onTabChanged:
 2: MEDIA_PLAYING_CHANGE
 04-10 20:31:36.280  2886  2886 D MediaControlService: onStateChanged,
 state = PLAYING
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29859#comment:15>
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