4K Passthru

Discussion in 'AV Receivers & Amplifiers' started by grannygear, Dec 20, 2016.

  1. grannygear

    grannygear
    Novice Member

    Joined:
    Dec 12, 2016
    Messages:
    4
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Location:
    Halifax, NS
    Ratings:
    +0
    I have a receiver with 4 K passthru, but not HDCP 2.2 support. The outputs are labelled 4K. When I stream 4K content from a ROKY, it is displayed in 1080P on my 4K TV. So, is there any practical use for the 4K passthru?
     
  2. dante01

    dante01
    Distinguished Member

    Joined:
    Mar 5, 2009
    Messages:
    45,831
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    166
    Ratings:
    +10,948
    Without HDCP 2.2 compliance then you are unlikely to be able to handle or passthrough natively encoded UHD content because almost all such content uses HDCP 2.2 for copyright protection and DRM purposes. The best you can hope to passthrough is HD or SD content scaled up to 4K prior to the receiver or 4K content you've created that isn't protected by HDCP 2.2.
     
  3. grannygear

    grannygear
    Novice Member

    Joined:
    Dec 12, 2016
    Messages:
    4
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Location:
    Halifax, NS
    Ratings:
    +0
    Thanks for the reply. One thing I don't understand is why a Roku Premiere, outputting 4K, run thru my receiver, displays 1080P on the TV. I would have guessed I would have received an HDCP 2.2 error. Make sense?

    When I run the same Roku and content to a TV HDMI port, it displays in 4k and I get audio on ARC...
     
  4. dante01

    dante01
    Distinguished Member

    Joined:
    Mar 5, 2009
    Messages:
    45,831
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    166
    Ratings:
    +10,948
    It depends upon what you are using to source the content. THe Roku is simply a device on which other services or apps run. Those services carry content that may or may not be protected by HDCP 2.2 depending on whether it is or isn't UHD in nature. THe RoKu simply employs an HDCP 2.2 compliant HDMI output and doesn't encode everything it outputs with HDCP 2.2 copyright protection. You only need HDCP 2.2 compliance when dealing with UHD content.
     
  5. Joe Fernand

    Joe Fernand
    Distinguished Member AVForums Sponsor

    Joined:
    Jan 20, 2002
    Messages:
    28,599
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    The Borders
    Ratings:
    +3,494
    You could use an HDFury Linker to 'fool' the ROKU into seeing an HDCP 2.2 enabled Sync.

    Joe
     
  6. grannygear

    grannygear
    Novice Member

    Joined:
    Dec 12, 2016
    Messages:
    4
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Location:
    Halifax, NS
    Ratings:
    +0
    The thought had crossed my mind....
     

Share This Page

Loading...