Hi,

I´m trying to export a video that has video input without sound, and an mp3 input for beat detection.
Am I able to export the output video with sound, merge the two inputs with beat detection in one final video (with sound) output?

Another question:
Can I do beat detection (with minim Library) from the sound that comes out de video input?


This is my code:

import processing.video.*;
import ddf.minim.*;
import ddf.minim.analysis.*;

Movie filme;

Minim minim;
AudioPlayer musica;
BeatDetect beat;
BeatListener b;

MovieMaker filme_final;

float  kickSize, snareSize, hatSize = 100;
int instante_width = 720;
int instante_height= 576;

void setup()
{
 size(720, 576);
 imageMode(CENTER);
 
 filme = new Movie(this, "circles_edit_mpeg4.mov");
 minim = new Minim(this);
 musica = minim.loadFile("circles_audio.mp3");
 
 beat = new BeatDetect(musica.bufferSize(), musica.sampleRate());
 beat.setSensitivity(10);
 b = new BeatListener(beat, musica);
 
 filme.play();
 musica.play();
 
 filme_final = new MovieMaker(this, width, height, "final.mov", 25, MovieMaker.JPEG, MovieMaker.LOSSLESS);
}


void draw()
{
 filme_final.addFrame();
 instante_width = 720;
 instante_height= 576;
 
 if(keyPressed)
 {
   if (key == 's')
   {
     if ( beat.isKick() ) kickSize = 110;
     if ( beat.isHat() ) hatSize = 120;
     if ( beat.isSnare() ) snareSize = 130;
     
     kickSize = constrain(kickSize * 0.95, 100, 110);
     hatSize = constrain(hatSize * 0.95, 100, 120);
     snareSize = constrain(snareSize * 0.95, 100, 130);
     
     instante_width = int((width*(kickSize+hatSize+snareSize)/3)/100);
     instante_height = int((height*(kickSize+hatSize+snareSize)/3)/100);
   }
 }
 
 image(filme, width/2, height/2, instante_width, instante_height);
 
 if(keyPressed)
 {
   if (key == 'f')
   {
     if ( beat.isKick() || beat.isHat() || beat.isSnare() )
     {
       noStroke();
       fill(255, 255, 255, 90);
         rect(0, 0, width, height);
       noFill();
     }
   }
   
   if (key == 'q') stop();
 }
 
}

void movieEvent(Movie m)
{
 m.read();
}

void stop()
{
 filme_final.finish();
 musica.close();
 minim.stop();
 super.stop();
 exit();
}

class BeatListener implements AudioListener
{
 private BeatDetect beat;
 private AudioPlayer source;
 
 BeatListener(BeatDetect beat, AudioPlayer source)
 {
   this.source = source;
   this.source.addListener(this);
   this.beat = beat;
 }
 
 void samples(float[] samps)
 {
   beat.detect(source.mix);
 }
 
 void samples(float[] sampsL, float[] sampsR)
 {
   beat.detect(source.mix);
 }
}