I'm making an application that opens and disposes movies frequently.  After a few movies the processor begins to tank and things slow down.  

I'm making sure to dispose old movies (there is only one movie active at any particular time) before a new one is opened, but it appears that something is left running or unhandled.  When the application is finally closed, I get an error message for each of the previous movies that were disposed.

There error messages are all of this form:

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav
a:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at processing.core.PApplet$RegisteredMethods.handle(PApplet.java:707)
at processing.core.PApplet$RegisteredMethods.handle(PApplet.java:700)
at processing.core.PApplet.stop(PApplet.java:650)
at processing.core.PApplet.run(PApplet.java:1355)
at java.lang.Thread.run(Thread.java:613)
Caused by: quicktime.QTNullPointerException: This QTJava object was allocated in a previous QTSession and is no longer valid:quicktime.std.movies.Movie
at quicktime.QTObject._ID(QTObject.java:80)
at quicktime.std.movies.Movie.setTimeValue(Movie.java:1313)
at processing.video.Movie.stop(Movie.java:533)
at processing.video.Movie.dispose(Movie.java:722)
... 9 more


It looks like the runner thread is being successfully stopped (watched in a process monitor) since the thread count does not increase.


Here is a simple app that reproduces the error.  It loads a new movie every draw() frame, so you should get a number of errors proportional to how long you leave the application open.  The errors will appear in the console when you close the app.  Just put a movie ("station.mov" is used here) when Movie() can find it and hit run.


//
// this is a nonsense app that reproduces an
// error I've been getting with the Movie class.
//
// When disposing a video, it looks like something
// is not being fully taken care of, and later when
// the application completely exits, the Exceptions
// come raining down. :(
//
//  - adam (kumpf@media.mit.edu)
//

import processing.video.*;
Movie movie;

void setup(){
 size(100, 100);
 frameRate(1);  // this produces an error at every frame, so be slow.
}

void draw(){
 if(movie != null){
   movie.dispose();
   movie = null;
   println("stopped and disposed the movie");
 }
 movie = new Movie(this, "station.mov", 15);
 movie.play();
 println("started a new movie");
}

// Called every time a new frame is available to read
void movieEvent(Movie m) {
 m.read();
}

void dispose(){
 if(movie != null){
   movie.dispose();
   println("stopped and disposed movie during exit.");
 }
}




thanks,
Adam