1. A method, including steps of selecting an acceptable error for one or more quantization types included in a scene graph for a multi-media presentation; selecting an order for one or more nodes included in a set of nodes in said scene graph; making a determination whether to insert a quantization parameter node to the left of a particular node included in said set of nodes, wherein said determination is performed upon one or more nodes in said set of nodes in the reverse of said order and said determination is responsive to the range of values at said node and said acceptable error; and inserting said quantization parameter node in response to said determination.