Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Hardware & Software > Software players

Reply
 
Thread Tools Search this Thread Display Modes
Old 21st October 2010, 02:35   #1  |  Link
chapas
Registered User
 
Join Date: Jul 2006
Posts: 52
DXVA and AMD 785G chipset problems

Hello people.

My HTPC is having problems with its DXVA decoding of 1080p h264 content.

I have proper DXVA decoding randomly. Sometimes the machine starts fine, but when I reboot for some reason I can't play any 1080p h264 file, not even with software! For some strange reason MPC-HC shows DXVA enabled but the videos stutter heavily. All videos present this problem. And then I reboot again and suddenly everything works fine.

Config is:
Biostar TA785GE 128M 6.0 (ATI HD4200 integrated, with 640MB memory, sideport + system)
AMD Athlon X2 240
4GB DDR2

Hopefully someone has a similar system and knows how to fix this.

Thank you!
chapas is offline   Reply With Quote
Old 21st October 2010, 04:52   #2  |  Link
Sharktooth
Mr. Sandman
 
Sharktooth's Avatar
 
Join Date: Sep 2003
Location: Haddonfield, IL
Posts: 11,768
have you tried updating the chipset/video drivers?
Sharktooth is offline   Reply With Quote
Old 21st October 2010, 04:57   #3  |  Link
chapas
Registered User
 
Join Date: Jul 2006
Posts: 52
Yes. I'm on the latest version on both, Southbridge (10.9) and Video (10.9a).

I can't get what's changing, since I just have to reboot to fix it, but it's not a real fix.
chapas is offline   Reply With Quote
Old 21st October 2010, 06:33   #4  |  Link
ranpha
Registered User
 
Join Date: Feb 2008
Posts: 334
Disable the sideport RAM and use system memory exclusively.
ranpha is offline   Reply With Quote
Old 21st October 2010, 18:04   #5  |  Link
chapas
Registered User
 
Join Date: Jul 2006
Posts: 52
Hi ranpha. I just tried disabling sideport RAM.

I had proper DXVA for the first 2 boots. The third was broken again

Thanks anyway! I'm open to try any other fix.
chapas is offline   Reply With Quote
Old 22nd October 2010, 00:34   #6  |  Link
chapas
Registered User
 
Join Date: Jul 2006
Posts: 52
Ok, I got more info for troubleshooting. I captured the screen showing the information by MPC-HC's Display Stats:




In this screenshot playback is fine, but I noticed that when DXVA is somehow broken, the upper right "Clock" gets as low as 30%.

Is this useful?

EDIT: MPC-HC build is: mpc-homecinema.1.4.2689_(x86)_msvc2010

Last edited by chapas; 22nd October 2010 at 00:36. Reason: Added MPC-HC build
chapas is offline   Reply With Quote
Old 23rd October 2010, 07:16   #7  |  Link
yetanotherid
Banned
 
Join Date: Apr 2008
Posts: 723
Maybe instead of using MPC-HC, try ffdshow for DXVA playback.

Try installing the latest version of the Combined Community Codec Pack (it's basically MPC-HC & ffdshow), let it disable anything it wants to disable as it installs and select the DXVA option at the settings screen during installation.

If that works try enabling DXVA in MPC-HC again, if you want to, to see if the problem returns.
yetanotherid is offline   Reply With Quote
Reply

Tags
785g, ati, dxva

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 00:06.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.