title: How to determine if the frame is IDR frame in IPP?
body: <p>In my application, I'm trying to use the IPP H.264 Encoder. I've set the encoder options so that every I frame were an IDR frame:</p>
  
  <pre class="lang-c prettyprint-override"><code>UMC::H264EncoderParams params = new UMC::H264EncoderParams;
  // Here set some other useful parameters, and then set IDR interval.
  // If it takes the n value then each n-th I frame is encoded as IDR.
  params-&gt;key_frame_controls.idr_interval = 1;
  </code></pre>
  
  <p>Usually all the generated I-frames are IDR, but sometimes IPP generates I-frames that aren't IDR. It seems that it happens when a great scene changes have been made. </p>
  
  <p>I need to detect IDR frames and differ them from all other frames (including these I-frames that are not IDR). Are there some means in IPP to solve this task? Or it can only be done manually?</p>