https://bugs.winehq.org/show_bug.cgi?id=45287
--- Comment #16 from David dav75uk@yahoo.co.uk --- I suspect that is part of the problem. I've noticed that Packman doesn't distribute the 32 bit gstreamer codecs for released OpenSuSE version.
I've mailed them to see if they will consider adding the 32bit codecs.
Note that the newer Fritz Trainer media is mp4, though on trying to open that (the button doesn't work with a mouse click, but enter does) it complains the media doesn't seem to be mp4 and trying to attempt to play it causes a crash (which might be wine, media player or codecs).
I've sent a support request to Chessbase to see if there is any test media which the wine devs could access so it can be tested. It might run into the wall of we don't support linux, it might not, let's see.