title: The entire frame is rotated after video capture
body: <p>frame variables pixel is entire frame </p>
  
  <p>environment  </p>
  
  <ul>
  <li>python version</li>
  </ul>
  
  <pre><code>3.6.9 (default, Nov  7 2019, 10:44:02) 
  [GCC 8.3.0]
  </code></pre>
  
  <ul>
  <li>opencv version</li>
  </ul>
  
  <pre><code>opencv-contrib-python==4.1.2.30
  opencv-python==4.1.2.30
  </code></pre>
  
  <p>moviefile
  30seconds</p>
  
  <p>frame
  height = 1920, width = 1080</p>
  
  <pre class="lang-py prettyprint-override"><code>cap = cv2.VideoCapture(video_file_path)
  frames = []
  while(cap.isOpened()):
      ret, frame = cap.read()
      if ret:
          frames.append(frame)
      else:
          break
  plt.imshow(frames[0])
  </code></pre>
  
  <p>When executed
  height = 1080, width = 1920</p>
  
  <p>How do I ?
  Thanks</p>