package libpostproc52 6:0.8.13-0ubuntu0.13.10.1 failed to install/upgrade: libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances

I ran the following command:
sudo apt-get update

Then I restarted the system while restarting I got this error.

I am using ubuntu 14.04 LTS operating system.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libpostproc52 6:0.8.13-0ubuntu0.13.10.1
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
Date: Fri Dec 26 13:41:34 2014
Dependencies:
 gcc-4.9-base 4.9.1-0ubuntu1
 libavutil51 6:0.8.13-0ubuntu0.13.10.1 [origin: unknown]
 libc6 2.19-0ubuntu6.4
 libgcc1 1:4.9.1-0ubuntu1
 multiarch-support 2.19-0ubuntu6.4
DuplicateSignature: package:libpostproc52:6:0.8.13-0ubuntu0.13.10.1:libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances
ErrorMessage: libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances
InstallationDate: Installed on 2013-04-11 (624 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: libav
Title: package libpostproc52 6:0.8.13-0ubuntu0.13.10.1 failed to install/upgrade: libpostproc52:amd64 6:0.git20120821-4 (Multi-Arch: no) is not co-installable with libpostproc52 which has multiple installed instances
UpgradeStatus: Upgraded to trusty on 2014-09-05 (112 days ago)