package libavcodec-ffmpeg-extra56:i386 7:2.8.11-0ubuntu0.16.04.1 failed to install/upgrade: package libavcodec-ffmpeg-extra56:i386 is already installed and configured

[Shine-sankardas]

i was installing ubutu restricted extras but have to kill the terminal in the middle.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libavcodec-ffmpeg-extra56:i386 7:2.8.11-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.4.0-83.106-generic 4.4.70
Uname: Linux 4.4.0-83-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.9
AptOrdering:
 oxideqt-codecs: Install
 libavcodec-ffmpeg-extra56: Configure
 oxideqt-codecs: Configure
 NULL: ConfigurePending
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: i386
Date: Sat Jul 15 14:47:55 2017
DpkgTerminalLog:
 Preparing to unpack .../oxideqt-codecs_1.21.5-0ubuntu0.16.04.1_i386.deb ...
 Unpacking oxideqt-codecs:i386 (1.21.5-0ubuntu0.16.04.1) ...
 dpkg: error processing package libavcodec-ffmpeg-extra56:i386 (--configure):
  package libavcodec-ffmpeg-extra56:i386 is already installed and configured
DuplicateSignature:
 package:libavcodec-ffmpeg-extra56:i386:7:2.8.11-0ubuntu0.16.04.1
 Unpacking oxideqt-codecs:i386 (1.21.5-0ubuntu0.16.04.1) ...
 dpkg: error processing package libavcodec-ffmpeg-extra56:i386 (--configure):
  package libavcodec-ffmpeg-extra56:i386 is already installed and configured
ErrorMessage: package libavcodec-ffmpeg-extra56:i386 is already installed and configured
InstallationDate: Installed on 2016-10-25 (262 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release i386 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: dpkg
Title: package libavcodec-ffmpeg-extra56:i386 7:2.8.11-0ubuntu0.16.04.1 failed to install/upgrade: package libavcodec-ffmpeg-extra56:i386 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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