You are more likely to get help if you indicate your opensuse version, and say what it is that you were trying to do.
Checking here (using opensuse 13.1), I see that libavformat55 version 2.1.1-3.3-8x6_64 is installed, but the packman repo has version 2.1.1-3-8x6_64. I am not seeing any problems over this.
Presumably, you are not running 13.1, since your version number is a bit different.
Uninstall libavfilter3 (you should have that option in zypper’s conflict resolution dialog).
ffmpeg has been upgraded to 2.2.0, and this version comes with libavfilter4. But this conflicts with libavfilter3 which is no longer needed nor available.
Apper is useless when it finds problems. It just refused to update.
In that case, use Yast online update. It give several choices for possible actions. It is usually easy to see which choice to make. But you can ask here if unsure.
Or, use “zypper up” from a root command line. It, too, will present choices, though in a command-line interface manner.
If I there are many updates, I usually take the choice “do not install xxx”. That allows most of the updates to install. Then I restart Yast online update, with only the problem updates remaining. And then I look more closely at the problems and solution choices.
No. YaST->Online updates won’t update packages from Packman.
Either use “zypper up” or YaST->Software Management.
Or uninstall libavfilter3 via YaST or zypper as I suggested already, and Apper should be able to update all packages.
Apper is not able to resolve conflicts, but by uninstalling libavfilter3, you remove the conflict.