* Identifies a stream by examining the first two bytes.
* @param id Byte array holding four bytes at minimum
* @return StreamID
*/
public static StreamID getStreamID(byte id[]) {
StreamID sid;
if (id[0]==0x50 && id[1]==0x47) {
sid = StreamID.BDSUP;
} else if (id[0]==0x53 && id[1]==0x50) {
sid = StreamID.SUP;