Roku 4K playback issue ( no video only Audio)

function setVODDataOnResponse() as void
  top = m.top

  if top.response.AvailableMedia <> invalid AND top.response.AvailableMedia.Count() > 0

    
    
    videoContent = createObject("RoSGNode", "ContentNode")

    mediaData = top.response.AvailableMedia[0]

    m.content = top.response
    ' ******************************************
    ' * parse:  DRM
    ' ******************************************
    ' get content url
    videoContent.url = mediaData.ContentUrl
    ' check DRM
    if mediaData.LicenseRequestToken <> invalid then
      videoContent.EncodingType = "PlayReadyLicenseAcquisitionAndChallenge"
       ' logic to get enckey and removed as shared outside
      videoContent.EncodingKey = encKey
    end if

    ' ******************************************
    ' * parse videoContent:  streamformat
    ' *   need to determine the type of steam because the Roku player is not smart enough to figure it out and will error
    ' ******************************************
    streamformat = determineStreamFormatFromUrl(videoContent.url)
    
    videoContent.streamformat = streamformat
    
    m.video.content = videoContent

    m.video.control = "play"
    m.timer.control = "start"
    m.progressUpdateTimer.control = "start"
    top.isBusy = true

    if m.top.response.mediaType = "preview"
      m.ffwd.speeds = [0, 5, 15, 30]
      m.ffwd.displayTag = ["", "2x", "4x", "8x"]
    end if

    if top.contentType = "vod"
      ' setup progressBar
      attachVodPlayerProgressBar()
      attachTrickPlayProgressBar()
      m.progressBar.model = top.response
      m.trickPlayBar.model = top.response
      ' setup player data
      '    end if

  end if
end function

RokuJonathanD  - here is the code I used. Both HD and SD content works on both devices. Only 4k content has issue in one as there is no image only audio.