package libav-tools (not installed) failed to install/upgrade: trying to overwrite '/usr/share/man/man1/qt-faststart.1.gz', which is also in package ffmpeg 4:0.5.1-1ubuntu1

[thomas altamirano]

While running regular system updates, the error message appeared. "Package operation failed. The installation or removal of a software package failed."

Description: Ubuntu 14.04.3 LTS
Release: 14.04

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libav-tools (not installed)
ProcVersionSignature: Ubuntu 3.13.0-71.114-generic 3.13.11-ckt29
Uname: Linux 3.13.0-71-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Sat Dec 26 12:27:00 2015
DuplicateSignature: package:libav-tools:(not installed):trying to overwrite '/usr/share/man/man1/qt-faststart.1.gz', which is also in package ffmpeg 4:0.5.1-1ubuntu1
ErrorMessage: trying to overwrite '/usr/share/man/man1/qt-faststart.1.gz', which is also in package ffmpeg 4:0.5.1-1ubuntu1
InstallationDate: Installed on 2014-09-01 (481 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10
SourcePackage: libav
Title: package libav-tools (not installed) failed to install/upgrade: trying to overwrite '/usr/share/man/man1/qt-faststart.1.gz', which is also in package ffmpeg 4:0.5.1-1ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)