VMCD (Vista Media Center Decoder Utility)

Search for it online, download and save it to your desktop, after saving run it and in the drop down you should see your decoder options, select the one you want as your default as well as you audio decoder.

As far as Divx, I just installed it, didn't install the Koepi

Are you using RC1 drivers from ATI's site, when I tried using those I had a problem watching videos due to vista not recognizing it with the RC1 drivers, but once I uninstalled and went back to the RC2 drivers that came with Vista 5744, all worked fine, but I had to use Nvidia Purevideo Decoder to get the Live tv to work without stutter.

 

Hope this helps

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System Specs:
Pentium 4 Processor 3.06GHz
2 GB RAM
GForce 8500 GT 512Mb
Hauppauge WinTV-HVR-1800
Creative X-Fi XtremeGamer
42 inch Samsung Series 5 HDMI
Windows 7 System Rating 4.0

Ive installed both divx from divx.com and koepi and neither are allowing me to watch divx in MCE. Thats weird! Maybe ill try reinstalling divx.
If you did anything else special please let me know, thanks!

No Luck,
I uninstalled divx and xvid and installed ffdshow. Ffdshow works in Windows Media Player but not in  MCE. I Don't understand why this is happening. Is there some place I need to tell MCE to look for the codec? SHouldn't it be the same as WMP?
Please help, this is Very important to me.
 Oh also, AC3 divx crashes in wmp.

What video card are you using and where'd you get the drivers for that video card.

I'm using an ATI x1600 Pro Series, and incase you're using an ATI card, the drivers on ATI's site (RC1 drivers) game me the same problem, so I had to go back to the RC2 drivers that came with Vista 5744

 

Hope this gets you closer

---

System Specs:
Pentium 4 Processor 3.06GHz
2 GB RAM
GForce 8500 GT 512Mb
Hauppauge WinTV-HVR-1800
Creative X-Fi XtremeGamer
42 inch Samsung Series 5 HDMI
Windows 7 System Rating 4.0

I'm using a Radeon 9550 with the RC2 drivers,
the ATI drivers from the site also gave me issues.

OK, when you try playing an video file in MCE, what's the error message you get.

does it say something to the affect of no codec found (not those words but is that what the message mean?)

---

System Specs:
Pentium 4 Processor 3.06GHz
2 GB RAM
GForce 8500 GT 512Mb
Hauppauge WinTV-HVR-1800
Creative X-Fi XtremeGamer
42 inch Samsung Series 5 HDMI
Windows 7 System Rating 4.0

It will say one of two things,
These are not the exact words...
One ore more codecs could not be found
or
The file you are playing doesn't exist....

of course those files exist and can be played in wmp/powerdvd/vlc

Yes that was the same problem I was having, same error message.

OK, try this, have you ever tried the drivers from ATI's website?

Go to Device manager, uninstall the Graphics card, and reboot.  let the drivers reinstall and try again.

I tried using the RC1 drivers but once I went back to the RC2 drivers same problem so I had to completely remove the drivers.

If you have System restore turned on you could go as far back as you can to the point where you know the drivers from the current installed Vista OS are in place.

---

System Specs:
Pentium 4 Processor 3.06GHz
2 GB RAM
GForce 8500 GT 512Mb
Hauppauge WinTV-HVR-1800
Creative X-Fi XtremeGamer
42 inch Samsung Series 5 HDMI
Windows 7 System Rating 4.0

I couldn’t leave well enough alone, I said I wasn’t going to mess with it but I did,…:)

Previously, the Vista test system had a Sapphire X800GTO2 card installed but I needed to test my new AIW X1900 in it since it was seemingly malfunctioning in another system.

So far so good,..

No sign of defect in the new AIW X1900 with default Microsoft WDDM drivers

No sign of a reoccurrence of the infamous 6 second stutter.

 

 

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i7 920 | ASUS P6T Deluxe | Triple-Channle DDR3 3x1GB | MSI GTX260 | Seagate 750GB | OCZ 600W Stealth X | LG GGW-H20L| XBox 360 | XBox 360 HD DVD Drive | HDHomeRun | Hauppauge HD PVR | Vista Home Premium

I solved the stuttering problem by unistalling NVIDIA 96.33 Forceware drivers and latest PureVideo decoder (1.02-223??) and use Vista RC2 graphics drivers and decoders. Now, there are very infrequent stutterings.

Peter

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Asus P4C800 Deluxe MB | 3 GHz P4 | 2 VBox DTA-150 | 2 GB RAM | 2 250 GB HDisk | Sapphire HD3850 | PureVideo Decoder | Lite-On Blu-ray | Silverstone LC13 HTPC | Antec 1000 Watts PS | Sony 60" LCD RPT via DVI cable | MCE 2005 |

hoopsdavis:

Yes that was the same problem I was having, same error message.

OK, try this, have you ever tried the drivers from ATI's website?

Go to Device manager, uninstall the Graphics card, and reboot.  let the drivers reinstall and try again.

I tried using the RC1 drivers but once I went back to the RC2 drivers same problem so I had to completely remove the drivers.

If you have System restore turned on you could go as far back as you can to the point where you know the drivers from the current installed Vista OS are in place.

Did that, still getting a codec error,
I am using the RC2 ATI drivers, I have the koepi xvix/divx installed, and powerdvd, still no luck. This is getting very frustrating. Everyone's divx can work except mine?
Any other suggestions? Or have I basically done everything?

Interesting -

I totally agree with your assesment that getting Nvidia's decoder and graphics driver.

I've had terrible stuttering problems since I made the leap to vista, and I'm absolutley certain the problem is either the display drivers or the MPEG decoder.   Why?  Because the experience is perfect on my Xbox 360s.  There is no lag at all and high def works great on all channels, it's only on the media center itself that the stuttering happens in high def.  

Another really suspicious thing to note - with the microsoft display drivers & decoder installed, I notice the CPU utilitization goes all the way up to 100% on high def and no surprise - HD skips like crazy.

But here is the problem.  When I install the Nvidia decoder, all the high def channels go into slow motion with audio that is totally out of sync.  Has anyone seen this before?  It's soooo wierd.  

And just something to add to the conversation... aren't there issues that can arise when the guide doesn't download the appropriate ATSC settings for each channel?  I believe if I remember right that this can cause skipping also.  I remember years ago I had to change some registry settings to get my local PBS channel to recieve properly because the guide didn't download the proper something or other (it was a while ago). 

 

 

 

 

hangnail2:

But here is the problem.  When I install the Nvidia decoder, all the high def channels go into slow motion with audio that is totally out of sync.  Has anyone seen this before?  It's soooo wierd.  

That's why I uninstalled NVIDIA decoder. I was seeing HDTV channels in slow motion.

I get near flawless HDTV images with default Vista graphics drivers and decoders.

Peter

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Asus P4C800 Deluxe MB | 3 GHz P4 | 2 VBox DTA-150 | 2 GB RAM | 2 250 GB HDisk | Sapphire HD3850 | PureVideo Decoder | Lite-On Blu-ray | Silverstone LC13 HTPC | Antec 1000 Watts PS | Sony 60" LCD RPT via DVI cable | MCE 2005 |

And the microsoft ones work for ya?

Just curious, what's your setup look like?  What video card are you using?  I'm using a 6600, maybe mine's just no beefy enough for the job.    

I wonder if there is a way to force the installation of the Pure Video HD beta decoder?

I wonder if that would give us a hardware accelerated vista experience?  It seems that the Microsoft decoder is totally software based.