diff --git a/src/Acid.Cam.v2.OpenCV3.Linux.pro b/src/Acid.Cam.v2.OpenCV3.Linux.pro
index 82d142c..88713ba 100644
--- a/src/Acid.Cam.v2.OpenCV3.Linux.pro
+++ b/src/Acid.Cam.v2.OpenCV3.Linux.pro
@@ -9,12 +9,12 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 CONFIG += c++11
 DEPENDPATH += .
 INCLUDEPATH += . /usr/include/ /usr/local/include
-LIBS += `pkg-config acidcam opencv --libs` -lGL
+LIBS += `pkg-config acidcam opencv sdl2 --libs` -lGL
 #LIBS += -lopencv_contrib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_legacy -lopencv_video 
 #LIBS += -L/usr/local/lib -lopencv_world
-QMAKE_CXXFLAGS += `pkg-config acidcam opencv --cflags`
+QMAKE_CXXFLAGS += `pkg-config acidcam opencv sdl2 --cflags`
 RESOURCES += qresource.qrc
 QMAKE_CFLAGS_ISYSTEM = -I
 # Input
-HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h
-SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp
+HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h controller.h
+SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp controller.cpp
diff --git a/src/Acid.Cam.v2.OpenCV3.pro b/src/Acid.Cam.v2.OpenCV3.pro
index d15c01c..c307170 100644
--- a/src/Acid.Cam.v2.OpenCV3.pro
+++ b/src/Acid.Cam.v2.OpenCV3.pro
@@ -9,12 +9,12 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 CONFIG += c++11
 DEPENDPATH += .
 INCLUDEPATH += . /usr/include/ /usr/local/include
-LIBS += `pkg-config acidcam opencv4 --libs` -framework OpenGL
+LIBS += `pkg-config acidcam opencv4 sdl2 --libs` -framework OpenGL
 #LIBS += -lopencv_contrib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_legacy -lopencv_video 
 #LIBS += -L/usr/local/lib -lopencv_world
-QMAKE_CXXFLAGS += `pkg-config acidcam opencv4 --cflags`
+QMAKE_CXXFLAGS += `pkg-config acidcam opencv4 sdl2 --cflags`
 RESOURCES += qresource.qrc
 QMAKE_CFLAGS_ISYSTEM = -I
 # Input
-HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h
-SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp
+HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h controller.h
+SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp controller.cpp
diff --git a/src/Acid.Cam.v2.OpenCV4.Linux.pro b/src/Acid.Cam.v2.OpenCV4.Linux.pro
index bcb52b4..dd773e0 100644
--- a/src/Acid.Cam.v2.OpenCV4.Linux.pro
+++ b/src/Acid.Cam.v2.OpenCV4.Linux.pro
@@ -9,12 +9,12 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 CONFIG += c++11
 DEPENDPATH += .
 INCLUDEPATH += . /usr/include/ /usr/local/include
-LIBS += `pkg-config acidcam opencv4 --libs` -lGLU
+LIBS += `pkg-config acidcam opencv4 sdl2 --libs` -lGLU
 #LIBS += -lopencv_contrib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_legacy -lopencv_video 
 #LIBS += -L/usr/local/lib -lopencv_world
-QMAKE_CXXFLAGS += `pkg-config acidcam opencv4 --cflags`
+QMAKE_CXXFLAGS += `pkg-config acidcam opencv4 sdl2 --cflags`
 RESOURCES += qresource.qrc
 QMAKE_CFLAGS_ISYSTEM = -I
 # Input
-HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h
-SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp
+HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h controller.h
+SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp controller.cpp
diff --git a/src/Acid.Cam.v2.OpenCV4.pro b/src/Acid.Cam.v2.OpenCV4.pro
index d15c01c..c307170 100644
--- a/src/Acid.Cam.v2.OpenCV4.pro
+++ b/src/Acid.Cam.v2.OpenCV4.pro
@@ -9,12 +9,12 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 CONFIG += c++11
 DEPENDPATH += .
 INCLUDEPATH += . /usr/include/ /usr/local/include
-LIBS += `pkg-config acidcam opencv4 --libs` -framework OpenGL
+LIBS += `pkg-config acidcam opencv4 sdl2 --libs` -framework OpenGL
 #LIBS += -lopencv_contrib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_legacy -lopencv_video 
 #LIBS += -L/usr/local/lib -lopencv_world
-QMAKE_CXXFLAGS += `pkg-config acidcam opencv4 --cflags`
+QMAKE_CXXFLAGS += `pkg-config acidcam opencv4 sdl2 --cflags`
 RESOURCES += qresource.qrc
 QMAKE_CFLAGS_ISYSTEM = -I
 # Input
-HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h
-SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp
+HEADERS += main_window.h new_dialog.h plugin.h qtheaders.h select_image.h display_window.h playback_thread.h search_box.h goto_window.h chroma_window.h user_define.h dl-man.h image_window.h options_window.h gl_display.h controller.h
+SOURCES += main.cpp main_window.cpp new_dialog.cpp plugin.cpp select_image.cpp display_window.cpp playback_thread.cpp search_box.cpp goto_window.cpp chroma_window.cpp user_define.cpp dl-man.cpp image_window.cpp options_window.cpp gl_display.cpp controller.cpp
diff --git a/src/controller.cpp b/src/controller.cpp
new file mode 100644
index 0000000..49aa28f
--- /dev/null
+++ b/src/controller.cpp
@@ -0,0 +1,35 @@
+
+#include"controller.h"
+#include<iostream>
+
+
+bool Controller::open(int index) {
+    stick = SDL_JoystickOpen(index);
+    if(!stick)
+        return false;
+    std::cout << "Opened: " << SDL_JoystickName(stick) << "\n";
+    return true;
+}
+
+void Controller::close() {
+    if(stick != 0)
+        SDL_JoystickClose(stick);
+}
+
+bool Controller::button(int index) {
+    if(stick != 0 && SDL_JoystickGetButton(stick, index))
+        return true;
+    return false;
+}
+
+Uint8 Controller::hat(int h) {
+    if(stick != 0)
+        return SDL_JoystickGetHat(stick, h);
+    return 0;
+}
+
+int Controller::axis(int index) {
+    if(stick != 0)
+        return SDL_JoystickGetAxis(stick, index);
+    return 0;
+}
diff --git a/src/controller.h b/src/controller.h
new file mode 100644
index 0000000..1833993
--- /dev/null
+++ b/src/controller.h
@@ -0,0 +1,26 @@
+
+#ifndef __CONTROLLER_H__
+#define __CONTROLLER_H__
+
+#include "SDL.h"
+
+class Controller {
+public:
+    static void init() {
+        SDL_Init(SDL_INIT_JOYSTICK);
+        atexit(SDL_Quit);
+    }
+    
+    bool open(int index);
+    void close();
+    bool button(int index);
+    Uint8 hat(int h);
+    int axis(int index);
+    
+private:
+    SDL_Joystick *stick;
+
+};
+
+#endif
+
diff --git a/src/main_window.cpp b/src/main_window.cpp
index 07900d0..fc93bf2 100644
--- a/src/main_window.cpp
+++ b/src/main_window.cpp
@@ -173,7 +173,9 @@ AC_MainWindow::AC_MainWindow(QWidget *parent) : QMainWindow(parent) {
         }
     }
 */
-    
+    Controller::init();
+    joy_timer = new QTimer(this);
+    connect(joy_timer, SIGNAL(timeout()), this, SLOT(chk_Joystick()));
 }
 
 
@@ -1048,6 +1050,13 @@ bool AC_MainWindow::startCamera(int res, int dev, const QString &outdir, bool re
     if(rt_val == false) return false;
     playback->Play();
     disp->show();
+    if(controller.open(0)) {
+        std::cout << "Controller connected...\n";
+        joy_timer->start();
+        
+    } else {
+        std::cout << "No controller detected...\n";
+    }
     return true;
 }
 
@@ -1146,6 +1155,12 @@ bool AC_MainWindow::startVideo(const QString &filename, const QString &outdir, b
     playback->setVideo(capture_video,writer,recording);
     playback->Play();
     disp->show();
+    if(controller.open(0)) {
+        std::cout << "Controller connected...\n";
+        joy_timer->start();
+    } else {
+        std::cout << "No controller detected...\n";
+    }
     return true;
 }
 
@@ -1797,3 +1812,15 @@ void AC_MainWindow::prev_filter() {
 void AC_MainWindow::showGLDisplay() {
     disp->showGL();
 }
+
+void AC_MainWindow::chk_Joystick() {
+    SDL_Event e;
+    while(SDL_PollEvent(&e)) {
+        if(controller.button(1)) {
+            prev_filter();
+        }
+        if(controller.button(0)) {
+            next_filter();
+        }
+    }
+}
diff --git a/src/main_window.h b/src/main_window.h
index ba0364d..16d6419 100644
--- a/src/main_window.h
+++ b/src/main_window.h
@@ -20,6 +20,7 @@
 #include "image_window.h"
 #include "options_window.h"
 #include "gl_display.h"
+#include "controller.h"
 
 class SearchWindow;
 
@@ -64,6 +65,7 @@ public:
     QAction *select_next_filter, *select_prev_filter;
     QAction *cycle_custom;
     QAction *show_glDisplay;
+    QTimer *joy_timer;
     double speed_actions[7];
     QRadioButton *filter_single, *filter_custom;
     void updateList();
@@ -74,6 +76,7 @@ public:
     void setOptionString(std::string op, std::string value);
     void setProcMode(int index);
 public slots:
+    void chk_Joystick();
     void addClicked();
     void rmvClicked();
     void upClicked();
@@ -164,6 +167,7 @@ private:
     bool loading;
     int speed_index;
     cv::ocl::Context context;
+    Controller controller;
 };
 
 extern const char *filer_names[];
diff --git a/src/playback_thread.h b/src/playback_thread.h
index 88e49dd..6467d4e 100644
--- a/src/playback_thread.h
+++ b/src/playback_thread.h
@@ -11,6 +11,7 @@
 #include "qtheaders.h"
 #include<atomic>
 
+
 enum VideoMode { MODE_CAMERA = 0, MODE_VIDEO };
 
 class Playback : public QThread {