Exporting video from processing 3 - audio

Question

I am using processing-3.2.2 for audio visualization. I have the code to play the visualiser but I don't know how to save it as a video(.mp4) file.
Here's what I wrote:
import ddf.minim.*;
import ddf.minim.analysis.*;
Minim minim;
AudioPlayer player;
AudioMetaData meta;
BeatDetect beat;
int r = 200;
float rad = 70;
void setup()
{
size(500, 500);
//size(600, 400);
minim = new Minim(this);
player = minim.loadFile("son_final.mp3");
meta = player.getMetaData();
beat = new BeatDetect();
player.play();
//player.play();
background(-1);
noCursor();
}
void draw()
{
float t = map(mouseX, 0, width, 0, 1);
beat.detect(player.mix);
fill(#1A1F18,50);
noStroke();
rect(0, 0, width, height);
translate(width/2, height/2);
noFill();
fill(-2, 10);
if (beat.isOnset()) rad = rad*0.9;
else rad = 70;
ellipse(0, 0, 2*rad, 2*rad);
stroke(-1, 50);
int bsize = player.bufferSize();
for (int i = 0; i < bsize - 1; i+=5)
{
float x = (r)*cos(i*2*PI/bsize);
float y = (r)*sin(i*2*PI/bsize);
float x2 = (r + player.left.get(i)*100)*cos(i*2*PI/bsize);
float y2 = (r + player.left.get(i)*100)*sin(i*2*PI/bsize);
line(x, y, x2, y2);
}
beginShape();
noFill();
stroke(-1, 50);
for (int i = 0; i < bsize; i+=30)
{
float x2 = (r + player.left.get(i)*100)*cos(i*2*PI/bsize);
float y2 = (r + player.left.get(i)*100)*sin(i*2*PI/bsize);
vertex(x2, y2);
pushStyle();
stroke(-5);
strokeWeight(2);
point(x2, y2);
popStyle();
}
endShape();
if (flag) showMeta();
}
void showMeta() {
int time = meta.length();
textSize(50);
textAlign(CENTER);
text( (int)(time/1000-millis()/1000)/60 + ":"+ (time/1000-millis()/1000)%60, -7, 21);
}
boolean flag =false;
void mousePressed() {
if (dist(mouseX, mouseY, width/2, height/2)<150) flag =!flag;
}
void keyPressed() {
if(key=='e')exit();
}
I know I can import MovieMaker library but I don't know how to use it in this code. Please suggest some changes.
Thank you.

Answer 1

You can use the Video Export library for that. More info here: http://funprogramming.org/VideoExport-for-Processing/
Then all you'd do is create an instance of VideoExport and then call videoExport.saveFrame() at the end of your draw() function.
import com.hamoid.*;
VideoExport videoExport;
void setup() {
size(600, 600);
videoExport = new VideoExport(this, "basic.mp4");
}
void draw() {
background(#224488);
rect(frameCount * frameCount % width, 0, 40, height);
videoExport.saveFrame();
}
There are a ton of resources online. I recommend googling "Processing video export" for a ton of results. Then try something out and post an MCVE (not your entire project) showing exactly where you're stuck.