Traceback (most recent call last):
  File "/Users/jonathanspringer/Library/Preferences/PyCharm40/scratches/scratch_1", line 6, in <module>
    print(cap.get_structure(0)['rate'])
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/gi/overrides/Gst.py", line 227, in __getitem__
    return self.get_value(key)
TypeError: unknown type GstIntRange