Exception in thread "main" java.lang.NullPointerException at pstream.PStream.(PStream.java:46) at pstream.PStream.main(PStream.java:50) Unable to handle format: H264/RTP Failed to realize: com.sun.media.PlaybackEngine@1dd7056 Error: Unable to realize com.sun.media.PlaybackEngine@1dd7056 Java Result: 1 Trying to play rtsp://ngeva02.polito.it/ed_hd.mov by a JMF implementation. CODE: import java.io.*; import java.net.*; import javax.media.*; import javax.media.format.*; import javax.media.protocol.*; public class PStream { private MediaLocator mrl; private Player player; private String nameUrl; public PStream(){ nameUrl=new String("rtsp://ngeva02.polito.it/ed_hd.mov"); mrl = new MediaLocator ( nameUrl ); /* if ( mrl == null || nameUrl.equals("") ) { System.out.println ("Can't build URL for" + " " + nameUrl); return; }*/ try { // player = Manager.createPlayer(mrl); player=Manager.createRealizedPlayer(mrl); } catch (NoPlayerException e) { System.out.println("Could not create player for " + mrl); return; } catch(IOException i) { System.out.println("Error in IO"); }catch(CannotRealizeException ex) {System.out.println("impossible realising the client"); } player.start(); } public static void main(String[] args) { PStream p; p= new PStream(); } }