Removed jump to frame, length and frame methods from Movie, modified Frame example accordingly.

java/libraries/video/examples/Movie/Frames/Frames.pde

@@ -3,7 +3,8 @@
  * by Andres Colubri
  * 
  * Moves through the video one frame at the time by using the
- * arrow keys.
+ * arrow keys. It estimates the frame counts using the framerate
+ * of the movie file, so it might not be exact in some cases.
  */
  
 import processing.video.*;
@@ -38,7 +39,7 @@ void draw() {
   image(movie, 0, 0, width, height);
   fill(240, 20, 30);
 
-  text(movie.frame() + " / " + (movie.length() - 1), 10, 30);
+  text(getFrame() + " / " + (getLength() - 1), 10, 30);
 }
 
 void keyPressed() {
@@ -46,11 +47,41 @@ void keyPressed() {
     if (keyCode == LEFT) {
       if (0 < newFrame) newFrame--; 
     } else if (keyCode == RIGHT) {
-      if (newFrame < movie.length() - 1) newFrame++;
+      if (newFrame < getLength() - 1) newFrame++;
     }
   } 
   
-  movie.play();
-  movie.jump(newFrame);
-  movie.pause();  
+  
+  setFrame(newFrame);  
 }
+  
+int getFrame() {    
+  return ceil(movie.time() * movie.getSourceFrameRate()) - 1;
+}
+
+void setFrame(int n) {
+  movie.play();
+
+  float srcFramerate = movie.getSourceFrameRate();
+    
+  // The duration of a single frame:
+  float frameDuration = 1.0 / srcFramerate;
+    
+  // We move to the middle of the frame by adding 0.5:
+  float where = (n + 0.5) * frameDuration; 
+    
+  // Taking into account border effects:
+  float diff = movie.duration() - where;
+  if (diff < 0) {
+    where += diff - 0.25 * frameDuration;
+  }
+    
+  movie.jump(where);
+  
+  movie.pause();  
+}  
+
+int getLength() {
+  return int(movie.duration() * movie.getSourceFrameRate());
+}  
+