title: Can I set rotation field for a video stream with FFmpeg?
body: <p>I have a video file. I open it with MediaInfo utility and I can see a video stream in this file having attribute Rotation 90 (along with other attributes such as CodecID, bitrate etc).</p>
  
  <p>Now I have another video file which does not have that attribute Rotation 90, it does not have the Rotation attribute at all.</p>
  
  <p>Can I use ffmpeg.exe so that it produces output file with Rotation 90 attribute added and with no other changes? I don't really want to do any transform, just want to set the Rotation attribute.</p>
  
  <p>I've tried the <code>-metadata</code> option to no avail.</p>