Berthold Stoeger 66a5b394d7 Preferences: warn if ffmpeg can't be loaded
In the preferences widget warn the user when they enter a non-executable
path to ffmpeg. Thus they don't have to start thumbnailing just to
find out that the path is wrong.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-07-11 00:24:23 +09:00
..
2019-03-27 14:07:32 -07:00