Stereo 360 video has squashed aspect ratio - how to fix?

Hi,

I'm trying to build a site with some 360 VR videos. The videos I've been provided with are stereo (top-bottom) format.

I'm able to configure krpano to display them, but the vertical aspect ratio is wrong. The video has been squished to half it's correct height.

I'm sure I'm doing something wrong, but I don't know what..

I tried adjusting view.vfov, but this didn't seem to make any change?

    <include url="skin/videointerface.xml" />

    <plugin name="video"
      url="%VIEWER%/plugins/videoplayer.js"
      pausedonstart="true"
      loop="true"
      volume="1.0"
      panovideo="true"
      onloaded="add_video_sources();"
      />    
      
    <image stereo="true" stereoformat="TB">
      <sphere url="plugin:video" />
    </image>

    <!-- set the default view -->
    <view hlookat="0" vlookat="0" fovtype="DFOV" fov="120" fovmin="75" fovmax="150" distortion="0.0" />

Note -- I tried stretching the original video, but that didn't seem to change anything.

I've tried video that was 4096x4096 (so top-bottom means this was 4096x2048 per eye).

I've tried video that was 2048x4096 (so top-bottom means this was 2048x2048 per eye)

In both cases, the displayed image in KRPano is squashed vertically.

I seem to have some success with setting the image.hfov and image.vfov.

Was that the correct way to solve this?