[tor-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
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-8.5, tbb-mobile,                 |  Actual Points:
  GeorgKoppen201903, TorBrowserTeam201903        |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by sysrqb):

 These all look interesting:
 {{{
 W/GeckoLinker(30125):
 /data/app/org.torproject.torbrowser_alpha-1/base.apk!/assets/armeabi-
 v7a/libmozavutil.so: Relocation to NULL @0x000293d0 for symbol
 "__cxa_type_match"
 W/GeckoLinker(30125):
 /data/app/org.torproject.torbrowser_alpha-1/base.apk!/assets/armeabi-
 v7a/libmozavcodec.so: Relocation to NULL @0x00023360 for symbol
 "__cxa_type_match"
 W/VideoCapabilities(30125): Unrecognized profile/level 32768/2 for video
 /mp4v-es
 I/VideoCapabilities(30125): Unsupported profile 4 for video/mp4v-es
 I/Gecko   (30125): [30125, MediaPlayback #2] WARNING: Decoder=91a31250
 state=DECODING_METADATA Decode metadata failed, shutting down decoder:
 file /home/user/tor-browser/dom/media/MediaDecoderStateMachine.cpp, line
 340
 I/Gecko   (30125): [30125, MediaPlayback #2] WARNING: Decoder=91a31250
 Decode error: NS_ERROR_DOM_MEDIA_CANCELED (0x806e000a): file /home/user
 /tor-browser/dom/media/MediaDecoderStateMachine.cpp, line 3118
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29859#comment:2>
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