Class VideoConstrain

object --+        
         |        
 Constrain --+    
             |    
        MinMax --+
                 |
                VideoConstrain

>>> v = VideoConstrain()
>>> v(0, debug="name")
0
>>> v(-1, debug="name")
Traceback (most recent call last):
...
ConstrainError: name: -1 < min 0
>>> v(11, debug="name")
Traceback (most recent call last):
...
ConstrainError: name: 11 > max 10