[PyQt] PyQt snapshot crash on Qt5.4 with bogus QGraphicsVideoItem instance

[lloyd konneker]

OK, I'll try that sip change.

But I narrowed the problem down: informally:

foo = Foo() # where Foo is a subclass of QGraphicsItem but not 
QGraphicsVideoItem
group = QGraphicsItemGroup()
group.addToGroup(foo)
assert isinstance(group.childItems()[0], Foo)

  fails.  So I'm thinking Qt5.4 has either changed the semantics or is 
buggy.