https://bugs.winehq.org/show_bug.cgi?id=56066
--- Comment #3 from Rafał Mużyło galtgendo@o2.pl ---
No, that message is harmless....it doesn't do anything other than print an assertion.
Maybe.
Yet, even though the immediate uses of gst_video_info_from_caps are guarded, are you sure the code around them and in the functions it returns to handle a fail gracefully ?
Also, the way I understand that part of gstreamer docs, that happens if a segment of the caps is still an array, instead of a single value, so, perhaps, it would be nice to figure out why that happens...
The guid seems to be for seeking by keyframes (https://learn.microsoft.com/en-us/windows/win32/api/mfidl/nn-mfidl-imfseekin...). Perhaps the game doesn't check if that actually succeeds and blindly seeks the garbage values...but that doesn't sound as something that should actually crash...