[tbb-bugs] #19200 [Applications/Tor Browser]: HTML5 video not blocked with placeholder, plays automatically

[Tor Bug Tracker & Wiki]

#19200: HTML5 video not blocked with placeholder, plays automatically
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 Reporter:  potato                               |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Major                                |     Resolution:
 Keywords:  tbb-security-slider,                 |  Actual Points:
  tbb-6.0-issues, noscript, GeorgKoppen201611,   |
  TorBrowserTeam201611                           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by ma1):

 Replying to [comment:43 i139]:
 > Replying to [comment:42 i139]:
 > > but I have to click in two placeholder for play the video
 >
 > it's because the page at first time reload

 It's probably because there are two separate MediaSource buffers with
 different content types, e.g. one for audio and one for video.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19200#comment:45>
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