[tor-bugs] #29904 [Applications/Tor Browser]: NoScript blocks MP4 videos on "Safer" and "Safest" without click-to-play option

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#29904: NoScript blocks MP4 videos on "Safer" and "Safest" without click-to-play
option
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     Reporter:  gk                   |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  noscript,
     Severity:  Normal               |  tbb-8.0-issues, tbb-8.0-regression
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 In #28720 a regression in NoScript for click-to-play videos got
 investigated and fixed. However, there seem to be more cases that are
 unresolved so far. Examples are:

 https://justi.cz/security/2018/11/14/gvisor-lpe.html
 https://www.destroyallsoftware.com/talks/wat
 http://www.html5videoplayer.net/html5video/mp4-h-264-video-test/
 https://camendesign.com/code/video_for_everybody/test.html

 It seems to be related to MP4. I did not find an older NoScript
 WebExtensions version where this did work, so no regression range.

 That's again easily reproducible in a vanilla Firefox 60 ESR, by making
 sure everything in NoScript is allowed but media and then visiting the
 above mentioned URLs.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29904>
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