diff --git a/actions.py b/actions.py
index 3d7291f..1799d86 100644
--- a/actions.py
+++ b/actions.py
@@ -115,9 +115,23 @@ class Actions(object):
 
     def update_bank(self, amount):
         new_bank_number = self.data.update_bank_number(self.display.bank_number, amount)
-        print ('current number is : {} , new number is {} '.format(self.display.bank_number, new_bank_number))
         self.display.bank_number = new_bank_number
         
+    def increase_speed(self):
+        new_rate = self.video_driver.current_player.change_rate(0.5)
+        current_bank, current_slot = self.data.split_bankslot_number(self.video_driver.current_player.bankslot_number)
+        self.data.update_slot_rate_to_this(current_bank, current_slot, new_rate)
+        self.load_this_slot_into_next_player(current_slot)
+
+    def decrease_speed(self):
+        new_rate = self.video_driver.current_player.change_rate(-0.5)
+        current_bank, current_slot = self.data.split_bankslot_number(self.video_driver.current_player.bankslot_number)
+        self.data.update_slot_rate_to_this(current_bank, current_slot, new_rate)
+        self.load_this_slot_into_next_player(current_slot)
+
+    def print_speed(self):
+        self.message_handler.set_message('INFO', 'the speed of current video is {}'.format(self.video_driver.current_player.omx_player.rate()))
+
     def set_playing_sample_start_to_current_duration(self):
         current_bank, current_slot = self.data.split_bankslot_number(self.video_driver.current_player.bankslot_number)
         current_position = self.video_driver.current_player.get_position()
diff --git a/data_centre/data.py b/data_centre/data.py
index 5e0b25e..2bb5824 100644
--- a/data_centre/data.py
+++ b/data_centre/data.py
@@ -19,7 +19,7 @@ BANK_DATA_JSON = 'display_data.json'
 NEXT_BANKSLOT_JSON = 'next_bankslot_number.json'
 SETTINGS_JSON = 'settings.json'
 KEYPAD_MAPPING = 'keypad_action_mapping.json'
-EMPTY_SLOT = dict(name='', location='', length=-1, start=-1, end=-1)
+EMPTY_SLOT = dict(name='', location='', length=-1, start=-1, end=-1, rate=1)
 EMPTY_BANK = [EMPTY_SLOT for i in range(10)]
 PATH_TO_DATA_OBJECTS = '{}/json_objects/'.format(get_the_current_dir_path())
 
@@ -66,7 +66,7 @@ class Data(object):
         has_location, location = self._get_path_for_file(file_name)
         print('file_name:{},has_location:{}, location:{}'.format(file_name,has_location, location))
         length = self._get_length_for_file(location)
-        new_slot = dict(name=file_name, location=location, length=length, start=-1, end=-1)
+        new_slot = dict(name=file_name, location=location, length=length, start=-1, end=-1, rate=1)
         self._update_a_slots_data(bank_number, slot_number, new_slot)
 
     @staticmethod
@@ -154,7 +154,7 @@ class Data(object):
         length = next_slot_details['length']
 
         context = dict(location=next_slot_details['location'], name=next_slot_details['name'],
-                       length=next_slot_details['length'], start=start_value, end=end_value,
+                       length=next_slot_details['length'], rate=next_slot_details['rate'], start=start_value, end=end_value,
                        bankslot_number=next_bankslot_number)
         return context
 
@@ -169,6 +169,11 @@ class Data(object):
         memory_bank[bank_number][slot_number]['end'] = position
         update_json(BANK_DATA_JSON, memory_bank)
 
+    def update_slot_rate_to_this(self,bank_number, slot_number, rate):
+        memory_bank = read_json(BANK_DATA_JSON)
+        memory_bank[bank_number][slot_number]['rate'] = rate
+        update_json(BANK_DATA_JSON, memory_bank)
+
     def _get_length_for_file(self, path):
         if self.has_omx:
             temp_player = OMXPlayer(path, args=['--alpha', '0'], dbus_name='t.t')
diff --git a/data_centre/json_objects/display_data.json b/data_centre/json_objects/display_data.json
index 4cc0b75..ad288fd 100644
--- a/data_centre/json_objects/display_data.json
+++ b/data_centre/json_objects/display_data.json
@@ -1 +1 @@
-[[{"start": -1, "end": -1, "length": 49.28, "location": "/media/pi/TIM1/videos_to_play/colour_pixel_01.mp4", "name": "colour_pixel_01.mp4"}, {"start": -1, "end": -1, "length": 87.04, "location": "/media/pi/TIM1/videos_to_play/colour_pixel_02.mp4", "name": "colour_pixel_02.mp4"}, {"start": -1, "end": -1, "length": 3.114, "location": "/media/pi/TIM1/teaser1.mp4", "name": "teaser1.mp4"}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}], [{"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}, {"start": -1, "end": -1, "length": -1, "location": "", "name": ""}]]
\ No newline at end of file
+[[{"rate": 3.5, "location": "/media/pi/TIM1/videos_to_play/colour_pixel_01.mp4", "length": 49.28, "end": -1, "start": -1, "name": "colour_pixel_01.mp4"}, {"rate": 1, "location": "/media/pi/TIM1/videos_to_play/long_spinning.mp4", "length": 804.245, "end": -1, "start": -1, "name": "long_spinning.mp4"}, {"rate": 0.5, "location": "/media/pi/TIM1/Test.mp4", "length": 599.585, "end": -1, "start": -1, "name": "Test.mp4"}, {"rate": 3.0, "location": "/media/pi/TIM1/teaser1.mp4", "length": 3.114, "end": -1, "start": -1, "name": "teaser1.mp4"}, {"rate": 0.5, "start": -1, "length": 3.114, "end": -1, "location": "/media/pi/TIM1/teaser1.mp4", "name": "teaser1.mp4"}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}], [{"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}, {"rate": 1, "location": "", "length": -1, "end": -1, "start": -1, "name": ""}]]
\ No newline at end of file
diff --git a/data_centre/json_objects/keypad_action_mapping.json b/data_centre/json_objects/keypad_action_mapping.json
index bcd8a3d..497820b 100644
--- a/data_centre/json_objects/keypad_action_mapping.json
+++ b/data_centre/json_objects/keypad_action_mapping.json
@@ -40,13 +40,13 @@
 		"DEFAULT": ["load_slot_2_into_next_player","clear_all_slots"]
 	},
 	"m": {
-		"DEFAULT": ["load_slot_3_into_next_player"]
+		"DEFAULT": ["load_slot_3_into_next_player","decrease_speed"]
 	},
 	"n": {
-		"DEFAULT": ["load_slot_4_into_next_player"]
+		"DEFAULT": ["load_slot_4_into_next_player","increase_speed"]
 	},
 	"o": {
-		"DEFAULT": ["load_slot_5_into_next_player"]
+		"DEFAULT": ["load_slot_5_into_next_player","print_speed"]
 	},
 	"p": {
 		"DEFAULT": ["load_slot_6_into_next_player"]
diff --git a/data_centre/json_objects/next_bankslot_number.json b/data_centre/json_objects/next_bankslot_number.json
index 0a208b6..6d77ead 100644
--- a/data_centre/json_objects/next_bankslot_number.json
+++ b/data_centre/json_objects/next_bankslot_number.json
@@ -1 +1 @@
-"0-1"
\ No newline at end of file
+"0-3"
\ No newline at end of file
diff --git a/display_centre/display.py b/display_centre/display.py
index 1c93dba..8dab461 100644
--- a/display_centre/display.py
+++ b/display_centre/display.py
@@ -75,13 +75,13 @@ class Display(object):
         bank_data = self.data.get_sampler_data()[self.bank_number]
         self.display_text.insert(END, '------------------ <SAMPLER> ------------------ \n')
         self.display_text.tag_add("DISPLAY_MODE", 4.19, 4.29)
-        self.display_text.insert(END, '{:^6} {:<20} {:<4} {:<4} {:<4} \n'.format(
-            '{}-slot'.format(self.bank_number), 'name', 'length', 'start', 'end'))
+        self.display_text.insert(END, '{:^6} {:<16} {:<4} {:<4} {:<4} {:<4} \n'.format(
+            '{}-slot'.format(self.bank_number), 'name', 'length', 'start', 'end', 'rate'))
         for index, slot in enumerate(bank_data):
             name_without_extension =  slot['name'].rsplit('.',1)[0]
-            self.display_text.insert(END, '{:^4} {:<22} {:<4} {:<4} {:<4} \n'.format(
+            self.display_text.insert(END, '{:^4} {:<18} {:<4} {:<4} {:<4} {:<4} \n'.format(
                 index, name_without_extension[0:22], self.format_time_value(slot['length']),
-                self.format_time_value(slot['start']), self.format_time_value(slot['end'])))
+                self.format_time_value(slot['start']), self.format_time_value(slot['end']), slot['rate']))
         current_bank , current_slot = self.data.split_bankslot_number(self.video_driver.current_player.bankslot_number)
         if current_bank is self.bank_number:
             self.selected_list_index = current_slot
diff --git a/video_centre/video_player.py b/video_centre/video_player.py
index 1a0f667..82b656a 100644
--- a/video_centre/video_player.py
+++ b/video_centre/video_player.py
@@ -17,6 +17,7 @@ class video_player:
         self.bankslot_number = '*-*'
         self.start = -1.0
         self.end = -1.0
+        self.rate = 1
         self.crop_length = 0.0
         self.location = ''
         self.load_attempts = 0
@@ -53,6 +54,8 @@ class video_player:
             if self.start > 0.5:
                 self.set_position(self.start - 0.5)
             self.pause_at_start()
+            print('set rate to {}'.format(self.rate))
+            self.omx_player.set_rate(self.rate)
             self.load_attempts = 0
             return True
         except ValueError:
@@ -109,6 +112,7 @@ class video_player:
         self.start = next_context['start']
         self.end = next_context['end']
         self.bankslot_number = next_context['bankslot_number']
+        self.rate = next_context['rate']
 
     def toggle_pause(self):
         self.omx_player.play_pause()
@@ -123,6 +127,17 @@ class video_player:
         else:
             self.message_handler.set_message('INFO', 'can not seek outside range')
 
+    def change_rate(self, amount):
+        new_rate = self.rate + amount
+        if (new_rate > self.omx_player.minimum_rate() and new_rate < self.omx_player.maximum_rate()):
+            updated_speed = self.omx_player.set_rate(new_rate)
+            self.rate = new_rate
+            print('max rate {} , min rate {} '.format(self.omx_player.maximum_rate() ,self.omx_player.minimum_rate()))
+            return new_rate
+        else:
+            self.message_handler.set_message('INFO', 'can not set speed outside of range')
+            return self.rate
+
     def set_position(self, position):
         self.omx_player.set_position(position)