communication links noted herein are also known in the art of computer communication in a preferred embodiment the originating server 110 and the terminal 120 are coupled by the communication link 130 0032 fig2 is a block diagram showing quantization parameter nodes that are selectively placed in optimal positions in a scene graph system 200 includes a first scene graph 210 and a second scene graph 220 the first scene graph 210 is converted into the second scene graph 210 using the computer program 113 for determining the optimal placement of quantization parameter nodes the first scene graph 210 is responsive to an mpeg 4 scene it includes a set of nodes shown here as nodes a k the scene graph 210 and set of nodes is exemplary other scene graphs may a different number of nodes or a different structure a node in a scene graph is a parent node if it has other nodes that descend from it thus the parent nodes in scene graph 210 are nodes a d and e a node is a child node if it descends from a parent node thus nodes b c and d are children of a nodes f g and h are children of d nodes i j and k are children of e a node may be designated as both a parent and a child if it descends from a node and has nodes that depend from it thus nodes d and e are both parents and children nodes are considered to be siblings if they descend from the same parent thus nodes b c d and e are siblings because they all descend from a similarly nodes f g and h are siblings as are nodes i.