diff --git a/beerpong/bin/data/README.txt b/beerpong/bin/data/README.txt
new file mode 100644
index 0000000..951150a
--- /dev/null
+++ b/beerpong/bin/data/README.txt
@@ -0,0 +1,3 @@
+Video mit FFMPEG verkleinern:
+
+ffmpeg -i beer.mkv -s 568x320 -c:a copy shrink.mkv 
\ No newline at end of file
diff --git a/beerpong/src/ofApp.cpp b/beerpong/src/ofApp.cpp
index 0d3236e..cafcf4e 100644
--- a/beerpong/src/ofApp.cpp
+++ b/beerpong/src/ofApp.cpp
@@ -1,23 +1,94 @@
 #include "ofApp.h"
 
+#define VIDEO_WIDTH 568
+#define VIDEO_HEIGHT 320
+
 //--------------------------------------------------------------
 void ofApp::setup(){
+	vidPlayer.load("beer.mkv"); // in /bin/data/
+	vidPlayer.play();
+	vidPlayer.setLoopState(OF_LOOP_NORMAL);
 
+	colorVideo.allocate(VIDEO_WIDTH, VIDEO_HEIGHT);
+	grayVideo.allocate(VIDEO_WIDTH, VIDEO_HEIGHT);
+
+	learnBackground = true;
+	threshhold = 80;
 }
 
 //--------------------------------------------------------------
 void ofApp::update(){
 
+	vidPlayer.update();
+	colorVideo.setFromPixels(vidPlayer.getPixels());
+
+	grayVideo = colorVideo; // Convert Color to Grayscale
+
+	if (learnBackground){
+		background = grayVideo;
+		learnBackground = false;
+	}
+
+	// Background subtraction
+	binarized.absDiff(background, grayVideo);
+	// Binarization
+	binarized.threshold(threshhold);
+
+	contourFinder.findContours(
+		binarized,
+		10,
+		VIDEO_HEIGHT * VIDEO_WIDTH / 10,
+		10,
+		true);
 }
 
 //--------------------------------------------------------------
 void ofApp::draw(){
+	ofSetHexColor(0xffffff);
+	colorVideo.draw(20, 20);
+	grayVideo.draw(40 + VIDEO_WIDTH, 20);
+	background.draw(20, 40 + VIDEO_HEIGHT);
+	binarized.draw(40 + VIDEO_WIDTH, 40 + VIDEO_HEIGHT);
 
+	ofFill();
+	ofSetHexColor(0x333333);
+	ofDrawRectangle(40 + VIDEO_WIDTH, 60 + VIDEO_HEIGHT + VIDEO_HEIGHT, VIDEO_WIDTH, VIDEO_HEIGHT);
+	ofSetHexColor(0xffffff);
+
+	for (int i = 0; i < contourFinder.blobs.size(); i++) {
+		ofxCvBlob blob = contourFinder.blobs[i];
+		
+
+		// draw over the centroid if the blob is a hole
+		ofSetColor(255);
+
+		// https://docs.opencv.org/master/d1/d32/tutorial_py_contour_properties.html
+		float aspect_ratio = blob.boundingRect.getWidth() / blob.boundingRect.getHeight();
+
+		stringstream sizeStr;
+		sizeStr << std::to_string(i) << ": " << std::to_string(contourFinder.blobs[i].area);
+		sizeStr << " | F=" << aspect_ratio;
+
+
+		if (aspect_ratio > 0.5 && aspect_ratio < 1.5)
+		{
+			blob.draw(40 + VIDEO_WIDTH, 60 + VIDEO_HEIGHT + VIDEO_HEIGHT);
+			ofDrawBitmapString(sizeStr.str(),
+				contourFinder.blobs[i].boundingRect.getCenter().x + 40 + VIDEO_WIDTH,
+				contourFinder.blobs[i].boundingRect.getCenter().y + 60 + VIDEO_HEIGHT + VIDEO_HEIGHT);
+		}
+	}
 }
 
 //--------------------------------------------------------------
 void ofApp::keyPressed(int key){
-
+	if (key == '-') threshhold--;
+	else if (key == '+') threshhold++;
+	else if (key == ' ') learnBackground = true;
+	else if (key == '0') vidPlayer.setPaused(!vidPlayer.isPaused());
+	else if (key == OF_KEY_RIGHT) vidPlayer.nextFrame();
+	else if (key == OF_KEY_LEFT) vidPlayer.previousFrame();
+	else;
 }
 
 //--------------------------------------------------------------
diff --git a/beerpong/src/ofApp.h b/beerpong/src/ofApp.h
index a9a1eea..ce594b9 100644
--- a/beerpong/src/ofApp.h
+++ b/beerpong/src/ofApp.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "ofMain.h"
+#include "ofxOpenCv.h"
 
 class ofApp : public ofBaseApp{
 
@@ -21,4 +22,17 @@ class ofApp : public ofBaseApp{
 		void dragEvent(ofDragInfo dragInfo);
 		void gotMessage(ofMessage msg);
 		
+		ofVideoPlayer vidPlayer;
+
+		// Images displaying original video
+		ofxCvColorImage colorVideo;
+		ofxCvGrayscaleImage grayVideo;
+
+		ofxCvGrayscaleImage background;
+		ofxCvGrayscaleImage binarized;
+
+		ofxCvContourFinder 	contourFinder;
+
+		bool learnBackground;
+		int threshhold;
 };