Micro stuttering (judder) with hd2600xt HW accelerated H.264 (1 Viewer)

[pnyberg]

But still... having slight stutter when enabling AC3 audio (using SPDIF out only) - but that is related to the Sound Card I believe... Anyone seen this perhaps?

This is still true in my environment... Beginning to think it is HW (X-Fi) related... Anybody else having this working? The strange thing is that I only get this when enabling AC3 over SPDIF, for SDTV, DVD and HDTV. Just wanted to hear if anybody has any insight on this. Been googling for quite a while now. Seen some suggestions it should be audio driver related...

When just using Digital-out with 2-channels the judder/stutter goes away...

Would appreciate if anyone could confirm have this working.

Regards,

 

[pnyberg]

Did solve my issue with micro stuttering (judder) when AC3 enabled with passthrough SPDIF.
My system was delivered pre-installed with XP SP2 and all the SoundBlaster X-FI drivers and programs preinstalled.

When upgrading to Vista I did a new install - hence lost the X-Fi programs.
However, did get hold of the drivers for Vista from HP's site. But HP did not deliver the X-Fi programs (Creative Console Launcher etc...). Finally I found these programs on http://www.youp-pax.org. Installed these and set the Flexijack to digital-out in Creative Console Launcher rebooted and voilá I got stutter free AC3/DD/DTS.

The funny thing is that it was possible to set digital-out inside Control Panel with HP drivers but then I got the problems mentioned above. I suspect the HP provided Creative Audio Console only managed to enable the digital out of the flexi-jack - but did not manage to turn off the DD/DTS encoder of the X-Fi. I think that re-encoding (of the original AC3/DD/DTS signal) did cause the stutter/judder of the video.

In my case I have a Pioneer Receiver that does the DD decoding to my speakers.

Just thought I should share my experiences, in case someone else run into similar problems...

 

[Andrew H]

GLAD you did... it's good to know how people FIX these issues!

 

[goorawin]

ATI HD2600 Registry Tweek

Having an ATI HD2600pro on Vista I have tried to run Registry Tweek to hopefully get rid of some jitter on HD1080i content. but Vista will not allow me to change the Registry even though I have the correct admin rights. Can someone please tell me how to run a script file (vbs) on Vista. Right clicking does not give the option "Run as Administrator".
Thanks