I did something similar. But I remember that I didn't find a way to get the movies *real* framerate. Actually, Quicktime for Java does not seem to be able to read out the framerate. I'd be happy if someone proofed me wrong here.

So, in my app the movie framerate was adjustable in a textbox. Then, the trick is to use a speed of 0, then jump to a location, wait for the movieEvent() to be called, calculate, jump to the next location, wait, calculate, etc.
The jump-step is measured in seconds and is calculated by
movie.duration() / framerate * movie.duration()
You can't access frames by their number, but by their time. If you think of compressed movies - where not every *frame* is actually available as pixels but is put together during runtime - this makes sense.

cool, just tried your keyframe trick, it speeds it up a bit.

i think your code reads from the movie object too often. isn't it possible for the draw-loop to be way faster than frame-loading? This might be relevant if one tries to process all the frames, but not process the same frame several times.

googling didn't help a lot for getting the framerate in qt java:
http://lists.apple.com/archives/QuickTime-java/2006/Jun/msg00024.html

as a workaround, you could try to play through the movie first at normal speed and count the calls to movieEvent(). fps = nrFrames/movie.duration()

I was doing a lot of pixel editing from the movie so doing the myMovie.read() every time through draw guaranteed that I would get the new pixels for the frame. I found that if you move the myMovie.read() call out to a movieEvent function there is a chance that you will get the same pixels twice.

It's a little brute force and not the best for real time manipulation but when you need every pixel you've got to beat that sucker into submission.

Hey,
This post really helped me out.  I'm trying to do a morphing video trick in shake similar to Gondry's Rolling Stones video or that Underworld video where the guy jumps through a window.  But I needed to take a still frame from my video every ten frames and hold it for ten frames.  Then do the same thing to the same video with an offset of 5 frames.  I can then take the two videos and fade morph back and forth every five frames.  I took your code and updated it do this and I added a MovieMaker to render them down again.  Thanks again.  here's the code




import processing.video.*;
Movie myMovie;
MovieMaker mm;  // Declare MovieMaker object

int i;
int increase = 0; //<------------start frame
int movieFPS = 30;
float movieFrameTime = 1.0/movieFPS;
float movieTime;

void setup() {
 size(720, 480);
 myMovie = new Movie(this, "Me02.mov");
  myMovie.speed(0);
 myMovie.loop();
 frameRate(30);
 // Create MovieMaker object with size, filename,
 // compression codec and quality, framerate
 mm = new MovieMaker(this, width, height, "Everyten.mov",
                      30, MovieMaker.RAW, MovieMaker.LOSSLESS);
}

void draw() {
 movieTime = (increase * movieFrameTime) % myMovie.duration();


 myMovie.jump(movieTime);
 myMovie.read();
 image(myMovie, 0, 0);  
 increase+=10;            //<------------how many frames to skip
 for(i=0 ; i<10 ; i++){  //<-----how many times to print a frame
   mm.addFrame(); //addframe ten times hopefully
 }
}
void keyPressed() {
 if (key == ' ') {
   mm.finish();  // Finish the movie if space bar is pressed!
 }
}

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