title: How to get video content from framebuffer (/dev/graphics/fb0)?
body: <p>I am accessing (<code>framebuffer</code>) <code>fb0</code> file from native code and successfully able to get image content with <code>fb0</code>. But if I play a video or open the camera, it gives me black screen.</p>
  
  <p>At that time if I rotate the screen, it gives some images of video, again it goes to black display.</p>
  
  <p>Can somebody help to know how to access video data from <code>framebuffer</code> or also want to know the reason why it is displaying images at time of screen rotation?</p>