Hyperion internal frame grabber

  • Hey there
    I just moved from a RPI3 to 4
    The System is up and running and hyperion is installed via hypercon.
    They rainbow swirl starts when hyperion starts and via a app on my phone i can set the colors.
    But when i start a movie i get no hyperion effect.
    Seems like the internal grabber is not working and some times the HDMI connection drops for a few seconds.
    When i stop hyperion this those not happen anymore .

    I also looked to instal the NG version but the links in the guides don't work anymore and i github there seems to be no RPI version

    Is there anybody here how has hyperion running on a RPI4 and how can tell me how they done it