title: Keras, method: fit, Error when checking input, about the shape
body: <p>I am building a model using TesnorFlow and Kras.</p>
  
  <p>The shape of the input data is (345, 720, 120, 3). That is an array of images size 720x120.</p>
  
  <pre class="lang-none prettyprint-override"><code>model = Sequential()
  model.add(Lambda(lambda x: (x / 255.0) - 0.5, input_shape=(170,120,3)))   
  model.add(Conv2D(24,(5,5),strides=(2,2),activation='relu'))
  ...
  
  model.fit(X_train, y_train, validation_split=0.2, shuffle=True, epochs=4)
  </code></pre>
  
  <p>For the last line 
  I got an error:</p>
  
  <pre class="lang-none prettyprint-override"><code>ValueError: Error when checking input: expected lambda_1_input to have shape (170, 120, 3) but got array with shape (720, 120, 3)
  </code></pre>
  
  <p>The shape of input that is expected is the same as shape that I am giving to the fit function. What is the problem here?</p>