def generate_output_file(self, input_image_file, input_video_file, output_file):
try:
controller = Controller()
controller.add_observer(self)
controller.generate_output_file(input_image_file, input_video_file, output_file)
print "\nFile successfully created"
except EmptyImageFileInputError:
print "You didn't specified an input image file"
except EmptyVideoFileInputError:
print "You didn't specified an input video file."
except EmptyFileOutputError:
print "You didn't specified an output file."
except:
print "An unexpected error occurred. File could not be created."
