Exporting Image array to .mov

Core Library Questions

liz.cooney

Exporting Image array to .mov

in Core Library Questions • 1 year ago

Hey all,

I've created a small image array and I'm trying to experiment with exporting the sketch to a .mov where I can later use it in iMovie. I read this thread and tried implementing the advice from there into my own code. However, I'm running into trouble and can't actually export anything (error message below).

If it is important, I'm using Processing 1.5.1 on a mac laptop, and I don't have the moviemaker option under Tools.

Here is the code:

import processing.video.*;

MovieMaker mm;

/////// MOVIE CODE

int numFrames = 12;

PImage[] images = new PImage[numFrames];

void setup() {

size(1440, 900);

///////

mm = new MovieMaker(this,width,height,"NOZOOM_PUBLIC_MONEY_3.mov", 30, MovieMaker.JPEG, MovieMaker.HIGH);

///////

frameRate(4);

for (int i = 0; i < 12; i++) {

String imageName = "A" + i +"_8.jpg";

images[i] = loadImage(imageName);

}}

void draw() {

int frame = frameCount % 12;

image(images[frame], 0, 0);

println(frame);

mm.addFrame();

}

void keyPressed() { //MOVIEMAKER

if (key == ' ') { //MOVIEMAKER

// Finish the movie if space bar is pressed //MOVIEMAKER

mm.finish(); //MOVIEMAKER

// Quit running the sketch once the file is written //MOVIEMAKER

exit(); //MOVIEMAKER

} //MOVIEMAKER

Here is the error message:

quicktime.std.StdQTException[QTJava:7.7.1g],-5000=afpAccessDenied,QT.vers:7718000

at quicktime.std.StdQTException.checkError(StdQTException.java:40)

at quicktime.std.movies.Movie.createMovieFile(Movie.java:116)

at processing.video.MovieMaker.initMovie(MovieMaker.java:219)

at processing.video.MovieMaker.<init>(MovieMaker.java:209)

at processing.video.MovieMaker.<init>(MovieMaker.java:169)

at EXPORT_TRIAL_NOZOOM_PUBLIC_MONEY_3.setup(EXPORT_TRIAL_NOZOOM_PUBLIC_MONEY_3.java:39)

at processing.core.PApplet.handleDraw(PApplet.java:1608)

at processing.core.PApplet.run(PApplet.java:1530)

at java.lang.Thread.run(Thread.java:680)

Please and thank you for any help!

Replies(6)

PhiLho

Re: Exporting Image array to .mov

1 year ago

" AccessDenied"
Perhaps move the file somewhere else: put an absolute path for the movie file, like /tmp/movie_name.mov

liz.cooney

Re: Exporting Image array to .mov

1 year ago

Yes, that worked. Thank you.

New question:

The exported file does not have the same playback speed. The frameRate in my sketch is 4, but the .mov file is WAY faster than that. Is this a fixable issue only in my movie editor, or is there a way to fix that in my Processing code?

PhiLho

Re: Exporting Image array to .mov

1 year ago

Leave the frameRate to default (30), it should be close to the frame rate of a movie.
So, use a timer (millis()) to control the rate of display of your images, ie. update dtraw() only 4 times per second.

liz.cooney

Re: Exporting Image array to .mov

1 year ago

Hi again,

I've restructured my code so it uses millis() as a timer for my images when I export to .mov

My problem is that the output file is 0 bytes and not readable. What's going wrong?

//PUBLIC ROW A-D {all sets}

import processing.video.*;

MovieMaker mm;

int numFrames = 79;
PImage[] images = new PImage[numFrames];

// variables for display-timings
int frame =0;
int frameStart =0;
int displayTime = 500;

void setup() {

size(1400, 900);

///////

mm = new MovieMaker(this,width,height,"/Documents/lindermovie.mov", 30, MovieMaker.JPEG, MovieMaker.HIGH);

///////

    for (int i = 0; i <79; i++) {

      if (i < 8){

      String imageName = "E" + 1 + "_" + (i+1) + ".jpg";
      images[i] = loadImage(imageName);}

      if (i>=8 && i<16){

      String imageName = "E" + 2 + "_" + (i-7) + ".jpg";
      images[i] = loadImage(imageName);}


      if(i>=16 && i<24){

      String imageName = "E" + 3 + "_" + (i-15) + ".jpg";
      images[i] = loadImage(imageName);}



      if(i>=24 && i<32){

      String imageName = "E" + 4 + "_" + (i-23) + ".jpg";
      images[i] = loadImage(imageName);}




      if(i>=32 && i<40){

      String imageName = "E" + 5 + "_" + (i-31) + ".jpg";
      images[i] = loadImage(imageName);}

      if(i>=40 && i<48){

      String imageName = "E" + 6 + "_" + (i-39) + ".jpg";
      images[i] = loadImage(imageName);}



      ////////////ROW B//////////////////


      if (i>=48 && i<56){

      String imageName = "F" + 1 + "_" + (i-47) + ".jpg";
      images[i] = loadImage(imageName);}

      if (i>=56 && i<64){

      String imageName = "F" + 2 + "_" + (i-55) + ".jpg";
      images[i] = loadImage(imageName);}


      if(i>=64 && i<72){

      String imageName = "F" + 3 + "_" + (i-63) + ".jpg";
      images[i] = loadImage(imageName);}



      if(i>=72 && i<79){

      String imageName = "F" + 4 + "_" + (i-71) + ".jpg";
      images[i] = loadImage(imageName);}

}
}

void draw() {

if (frame <79){

image(images[frame], 0, 0);

}

else{
frame=0;

}
println(frame);

// switch to next image, after 'displayTime'
if (millis()-frameStart > displayTime) {
frameStart = millis();
frame++;
}

}

void keyPressed() { //MOVIEMAKER

if (key == ' ') { //MOVIEMAKER

// Finish the movie if space bar is pressed //MOVIEMAKER

mm.finish(); //MOVIEMAKER

// Quit running the sketch once the file is written //MOVIEMAKER

exit(); //MOVIEMAKER

} //MOVIEMAKER

akiersky

Re: Exporting Image array to .mov

1 year ago

It looks like you may have dropped the part where you write frames to the movie.

Try adding this back in after your if statement in draw():

mm.addFrame();

The idea is that you only want to clear and draw a new image after you have counted over your displayTime. Every other draw loop you still want to write a frame to the movie file.

I would also move your frame < 79 check right after the frame increment. like this:

void draw() {
// switch to next image, after 'displayTime'
if (millis()-frameStart > displayTime) {
frameStart = millis();
frame++;
if(frame > 79){
frame = 0;
}
image(images[frame], 0, 0);
println(frame);
}
mm.addFrame();
}

also, if you click the little page with <> icons (third from the right above the posting text field) then paste your code, it will add line numbers and make your code look like code :)

good luck!

liz.cooney

Re: Exporting Image array to .mov

1 year ago

Thank. you. so. much. It works now. I'll remember that last tip for the next time I have a problem :)

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