[dolphin-emu] missing libavcodec-ffmpeg shared lib

Hi, installing and trying to run dolphin-emu runners ends with this error:

/home/illwieckz/.local/share/lutris/runners/dolphin/dolphin-emu: error while loading shared libraries: libavcodec-ffmpeg.so.56: cannot open shared object file: No such file or directory

I’m running Ubuntu 17.04.

The Lutris runtime was disabled by default with Dolphin but now that we’ve migrated it to Ubuntu 16.04, it can be re-enabled.

You can right click on Dolphin in the side bar, configure and enable the runtime in the System tab.