Well that is good news then.
Have you also updated your MOBO BIOS to the latest level and are you using the Vista X86 drivers for your graphics card.  Do you get the NVIDIA icon in your task bar when you watch TV if not then you are using the Preinstalled MS Vista DVD Decoder and not the NVIDIA one.  The DVD Decoder works only with XP and not with Vista so you can not relay on it to change TV Decoders.
Even with all the proper changes I can not get decent quality Live or Recorded TV with my Hauppauge 150 card on Vista and other with the exact same configuration can so I suspect some gremlins are still in Vista MC.
 Hello JW,

 

 It is MCE compatible. I made sure before I got it and AverMedia Website also confirms that it is MCE compatible. When I installed Vista and ran Microsoft update from Vista, it actually downloaded drivers for the card. Initially, I installed the MCE drivers that came with the card and then ran Windows update to get drivers from Microsoft.

 

 I am still not making much progress.

 

------------------------------------------------------------------------------

 From: JW [mailto:nospam@no.spam]
 Posted At: Tuesday, July 18, 2006 1:25 PM
 Posted To: microsoft.public.windows.vista.music_pictures_video
 Conversation: Vista Media Experience
 Subject: Re: Vista Media Experience
   

 It sounds like your Tuner card is not Media Center compatible or if it is you are using the regular windows drivers for it and not the VISTA MCE drivers for it.

 Check The AverMedia Website for MCE compatibility and MCE drivers for your specific card if they don't have them for your card then it will not work with Vista MC either, if they do have MCE drivers for your card then look for Vista drivers for you card on their site.

 

   "Samaarons" <samaarons@discussions.microsoft.com> wrote in message news:003301c6aa93$f76d2ec0$8339f044@samson...

   William,

   

   I am having major frustration too. I did a clean Vista install on a partition drive but can not get Vista MCE to play live TV well, I get freeze frames, pixilation but when I use the application supplied with my turner pci card, it runs incredibly well on my XP Pro OS for both live TV and DVD.

   

   System specs:

   TV Tuner: AverMedia UltraTV 1500  

   Mother Board: Asus p5rd1-vm

   Processor: P4. 2.66 GHz

   RAM: 1.2

   Graphics: ATI Radeon Xpress 200 series with 64 mb of RAM

   HD: 150 Gig (2 partitions, Vista one partition using 80 Gig and XP Pro on the other one)

   

   If you find out anything to improve, please let me know.

   

----------------------------------------------------------------------------

   From: William R. Mosher [mailto:woogles@charter.net]
   Posted At: Tuesday, July 18, 2006 9:48 AM
   Posted To: microsoft.public.windows.vista.music_pictures_video
   Conversation: Vista Media Experience
   Subject: Vista Media Experience
     

   I found under 5384 that the multimedia experience to be choppy and not the best. Especially when it came to DVD playback and Live TV in the Media Center. I have a Gateway P-4 2.0 gigahertz computer with 1.5 gb of RAM and an Nvidia GeForce FX5200 video card with 128 mb of RAM. I was becoming frustrated with the situation and on a hunch, I downloaded and installed the latest release of Nvidia PureVideo. Now my DVD playback is much improved, except in Media Player 11 (I do have alternatives to MP11 for watching DVD movies) and the live TV in the Media Center is much better.

   

   Has anyone also had this experience? Is the problem with the default decoder that Microsoft provides?

   

   William