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[Launchpad Bug Tracker <1643467@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: libav (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1643467

Title:
  Firefox 50 blocks Ubuntu 14.04 LTS's version of libavcodec

Status in firefox package in Ubuntu:
  Confirmed
Status in libav package in Ubuntu:
  Confirmed

Bug description:
  Whenever it tries to play a video, Firefox 50 displays this message at the top of every page:
  "libavcodec may be vulnerable or is not supported, and should be updated to play video"

  https://dxr.mozilla.org/mozilla-central/source/browser/locales/en-
  US/chrome/browser/browser.properties?q=%22libavcodec+may+be+vulnerable%22&redirect_type=single#742

  Firefox refuses any libavcodec version prior to 54.35.1 (unless
  media.libavcodec.allow-obsolete==true).

  https://dxr.mozilla.org/mozilla-
  central/source/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp#60

  Users should not be subjected to this warning, as it is vague (does not instruct them how to fix it).
  Ubuntu 14.04 LTS should ship with an updated version of libavcodec.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: firefox 50.0+build2-0ubuntu0.14.04.2
  ProcVersionSignature: Ubuntu 3.13.0-101.148-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-101-generic x86_64
  AddonCompatCheckDisabled: False
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ori        2431 F.... pulseaudio
  BuildID: 20161114145022
  Channel: Unavailable
  CurrentDesktop: Unity
  Date: Mon Nov 21 10:09:03 2016
  DefaultProfileIncompatibleExtensions:
   English (South Africa) Language Pack - langpack-en-ZA@xxxxxxxxxxxxxxxxxxx
   English (GB) Language Pack - langpack-en-GB@xxxxxxxxxxxxxxxxxxx
   Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
  DefaultProfilePrefSources:
   prefs.js
   [Profile]/extensions/{3d7eb24f-2740-49df-8937-200b1cc08f8a}/defaults/preferences/flashblock.js
   [Profile]/extensions/{5384767E-00D9-40E9-B72F-9CC39D655D6F}/defaults/preferences/defaults.js
  ForcedLayersAccel: False
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2013-01-09 (1411 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  IpRoute:
   default via 192.168.8.1 dev eth0  proto static 
   192.168.8.0/22 dev eth0  proto kernel  scope link  src 192.168.8.75  metric 1
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MostRecentCrashID: bp-863e2662-418a-4ee8-9f3c-2aef72160606
  Profile1Extensions: extensions.sqlite corrupt or missing
  Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
  Profile1Locales: extensions.sqlite corrupt or missing
  Profile1PrefSources: prefs.js
  Profile1Themes: extensions.sqlite corrupt or missing
  Profiles:
   Profile0 (Default) - LastVersion=50.0/20161114145022 (In use)
   Profile1 - LastVersion=48.0/20160728204513 (Out of date)
  RelatedPackageVersions:
   totem-mozilla     3.10.1-1ubuntu4
   rhythmbox-mozilla 3.0.2-0ubuntu2
   icedtea-7-plugin  1.5.3-0ubuntu0.14.04.1
  RfKill:
   
  RunningIncompatibleAddons: True
  SourcePackage: firefox
  SubmittedCrashIDs:
   bp-863e2662-418a-4ee8-9f3c-2aef72160606
   bp-02def148-f1d0-4998-99e5-e81a42160606
   bp-7c5452b0-1284-4c6d-a427-70c842141223
  UpgradeStatus: Upgraded to trusty on 2014-08-11 (832 days ago)
  WifiSyslog:
   
  dmi.bios.date: 04/11/2011
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F2
  dmi.board.name: H61M-S2V-B3
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd04/11/2011:svnGigabyteTechnologyCo.,Ltd.:pnH61M-S2V-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH61M-S2V-B3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: H61M-S2V-B3
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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