Custom Font in Video Playback?

I want to change the font of the title in the video player (see here) but whatever I do doesn't seem to work. This is my current code.

    m.Video = m.top.createChild("Video")
    m.Video.width = "1920"
    m.Video.height = "1080"
    m.Video.translation = "[0,0]"
    m.Video.visible = "false"
    m.Video.ObserveField("state","OnVideoPlayerStateChange")
    m.Video.ObserveField("contentIndex","OnPlayerContentIndexChange")

    m.Video.textFont = createObject("roSGNode", "Video")
    m.Video.textFont.uri = "pkg:/fonts/Amiri-Bold.ttf"
    m.Video.textFont.size = 30
    m.Video.textFont = textFont

Any help would be appreciated!