[tor-bugs] #19837 [Applications/Tor Browser]: Audio/video player is blank in 6.5a2

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#19837: Audio/video player is blank in 6.5a2
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     Reporter:  dcf                       |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 [https://blog.torproject.org/blog/tor-browser-65a2-released#comment-196694
 A blog commenter writes]:
   Previous builds would have a dark background with simple controls for
 video or audio playback. There are no longer visible controls for
 video/audio, just a blank white background, and I cannot view statistics
 or seek. Same behavior from local files [mp3/4].

 I can reproduce this. The player plays but there are no controls; in the
 case of an audio file this means the whole page is blank. It works as
 expected in 6.0.3.

 Try these example URLs:
   https://archive.org/download/OrsonWellesMrBruns/381030.ogg (audio)
   https://extra.torproject.org/blog/2016-08-PT-animation
 /pluggable_transports-animation.mp4 (video)

 Here is how the audio player looks in 6.0.3:
 [[Image(6.0.3.png)]]
 And in 6.5a2 it's just blank:
 [[Image(6.5a2.png)]]

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19837>
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