So, apparently, the Software Center can't deal with conflicts correctly, thus I'm reassigning this bug to it. That libavcodec-ffmpeg56 and libavcodec-ffmpeg-extra56 conflict is intentional and certainly not a bug.
** Package changed: ffmpeg (Ubuntu) => software-center (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to software-center in Ubuntu. https://bugs.launchpad.net/bugs/1511571 Title: package libavcodec-ffmpeg56 (not installed) failed to install/upgrade: conflicting packages - not installing libavcodec-ffmpeg56:amd64 Status in software-center package in Ubuntu: Confirmed Bug description: Package, apparently, failed to install through Software Center. It had an error and hasn't been able to be removed or repaired. ProblemType: Package DistroRelease: Ubuntu 15.10 Package: libavcodec-ffmpeg56 (not installed) ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu3 AptOrdering: libavcodec-ffmpeg56: Install libavcodec-ffmpeg56: Configure NULL: ConfigurePending Architecture: amd64 Date: Thu Oct 29 18:11:50 2015 ErrorMessage: conflicting packages - not installing libavcodec-ffmpeg56:amd64 InstallationDate: Installed on 2015-10-29 (0 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) RelatedPackageVersions: dpkg 1.18.2ubuntu5 apt 1.0.10.2ubuntu1 SourcePackage: ffmpeg Title: package libavcodec-ffmpeg56 (not installed) failed to install/upgrade: conflicting packages - not installing libavcodec-ffmpeg56:amd64 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1511571/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

