Package: firefox-esr
Version: 60.5.0esr-1~deb9u1

On <https://shaka-player-demo.appspot.com/demo/>, I get "Firefox is installing components needed to play the audio or video on this page. Please try again later." all the time.

In about:plugins I have:

  OpenH264 Video Codec provided by Cisco Systems, Inc.

      File: 1.7.1
      Path: /home/jwilk/.mozilla/firefox/.../gmp-gmpopenh264/1.7.1
      Version: 1.7.1
      State: Enabled
      This plugin is automatically installed by Mozilla to comply with the 
WebRTC specification and to enable WebRTC calls with devices that require the 
H.264 video codec. Visit http://www.openh264.org/ to view the codec source code 
and learn more about the implementation.

  Widevine Content Decryption Module provided by Google Inc.

      File: 1.4.8.1008
      Path: /home/jwilk/.mozilla/firefox/.../gmp-widevinecdm/1.4.8.1008
      Version: 1.4.8.1008
      State: Enabled
      Play back protected web video.

So it looks like all the required plugins are there?


-- System Information:
Architecture: amd64

Versions of packages firefox-esr depends on:
ii  debianutils               4.8.1.1
ii  fontconfig                2.11.0-6.7+b1
ii  libasound2                1.1.3-5
ii  libatk1.0-0               2.22.0-1
ii  libc6                     2.24-11+deb9u3
ii  libcairo-gobject2         1.14.8-1
ii  libcairo2                 1.14.8-1
ii  libdbus-1-3               1.10.26-0+deb9u1
ii  libdbus-glib-1-2          0.108-2
ii  libffi6                   3.2.1-6
ii  libfontconfig1            2.11.0-6.7+b1
ii  libfreetype6              2.6.3-3.2
ii  libgcc1                   1:6.3.0-18+deb9u1
ii  libgdk-pixbuf2.0-0        2.36.5-2+deb9u2
ii  libglib2.0-0              2.50.3-2
ii  libgtk-3-0                3.22.11-1
ii  libjsoncpp1               1.7.4-3
ii  libpango-1.0-0            1.40.5-1
ii  libstartup-notification0  0.12-4+b2
ii  libstdc++6                6.3.0-18+deb9u1
ii  libvpx4                   1.6.1-3+deb9u1
ii  libx11-6                  2:1.6.4-3+deb9u1
ii  libx11-xcb1               2:1.6.4-3+deb9u1
ii  libxcb-shm0               1.12-1
ii  libxcb1                   1.12-1
ii  libxcomposite1            1:0.4.4-2
ii  libxdamage1               1:1.1.4-2+b3
ii  libxext6                  2:1.3.3-1+b2
ii  libxfixes3                1:5.0.3-1
ii  libxrender1               1:0.9.10-1
ii  libxt6                    1:1.1.5-1
ii  procps                    2:3.3.12-3+deb9u1
ii  zlib1g                    1:1.2.8.dfsg-5

Versions of packages firefox-esr recommends:
ii  libavcodec57  7:3.2.12-1~deb9u1

Versions of packages firefox-esr suggests:
pn  fonts-lmodern          <none>
pn  fonts-stix | otf-stix  <none>
pn  libcanberra0           <none>
ii  libgssapi-krb5-2       1.15-1+deb9u1
ii  libgtk2.0-0            2.24.31-2
pn  pulseaudio             <none>

--
Jakub Wilk

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