5 Replies Latest reply: May 5, 2015 11:31 PM by mikmak2000
lam72bert Level 1 Level 1

I have an Apple TV 1080p. It works great with my Dell Plasma 1080p HDTV. I recently purchased a Samsung LCD 1080p 120hz set and everything is working great except AirPlay mirroring. Every cursor movement creates pixely grossness. Video is unwatchable. The video display on the normal Apple TV is fine. My Apple TV is set up wirelessly through a 600 N router.


I haven't been able to find anyone on the internet with this same problem so far, please tell me I'm missing something here!

AppleTV 2, iOS 6
  • Alley_Cat Level 6 Level 6

    Slow LAN connectivity most likely, and Airplay dropping quality due to this.

  • lam72bert Level 1 Level 1

    Ah okay... So an ethernet cable from the router to the Apple TV would fix my problem?

  • Alley_Cat Level 6 Level 6

    Airplay is a lossy process and must compress the display frame on the sending device in real time and transfer the compressed image to the AppleTV - it will adapt and give worse results with slower LAN speeds.


    Bear in mind that if both the AppleTV and sending device are wireless they have to share available LAN bandwidth, whereas AppleTV playing from the internet may be the only active wifi connection.


    So yes in theory having AppleTV on ethernet may well help.


    It may not be the whole issue though.  You may be seeing a difference between your plasma and LCD TVs - I've always preferred the smooth look of plasmas whereas LCD these days tends to give razor sharp pics that could accentuate any pixellation artefcat by just looking sharper.  Are the TVs located in different areas, as if in same place the wifi characteristics for Airplay would be the same for both in theory (unless new TV causing interference and degrading wifi speed - maybe reposition AppleTV?).


    Also some TVs have aggressive motion compensation features that whilst sounding good in theory can actually make some content look worse - have a play with your TV set settings.



  • NRIM Level 1 Level 1

    I have a similar issue.  Using a wired connection on my appleTV did not solve the problem.


    I figured the issue was slow LAN, but I'm not convinced anymore.  I have my appleTV wired now, with my router 10ft from my iMac which is connected using a 5GHz wireless connection.  Even with no traffic on my LAN, I see the same problem

  • mikmak2000 Level 1 Level 1

    For all on this thread that has the ATV connected to 1000Mbps ports: The ATV only has a 10/100 Mb port!

    1000Mb is generally not auto-negotiate but 10/100 is. This means that the switch/router will run 1000Mbps and ATV will default to 10Mb half duplex.

    Setting the switch/router to auto-negotiate and reconnecting cables will most likely solve these issues.