Ati 5450 video playback problem

Forums › Home Theatre (including HTPC and EPG Collector) › Ati 5450 video playback problem

1 | 2

mm1352000

1149 posts

Uber Geek
Inactive user

#449244 17-Mar-2011 14:27

hasso: Can't remember exactly, but wasn't there a limitation within certain versions of Windows or DirectX (?) that only permitted the monitor designated as primary to have hardware video acceleration? Don't know if this is the same situation as you are having, but sometime in the past (Windows XP?) I distinctly remember that if I played video on the secondary monitor it would jerk and pan scenes were crap, but if played on the primary everything worked perfectly.

Bang on. DirectX only supports DxVA (hardware acceleration) on the primary monitor. Check the codec that you're using and try and use something like CoreAVC (for h.264) that is really CPU efficient and doesn't necessarily require video card acceleration.

Samsung

Shop now on Samsung phones, tablets, TVs and more (affiliate link).

gzt

16907 posts

Uber Geek

Lifetime subscriber

#449411 17-Mar-2011 22:44

So does setting the TV as your primary monitor give you a smooth experience?

Also, what is your OS? This could be important.

And,

VLC 1.1.0 and GPU decoding on ATI (2010-07-02). The latest released version of VLC, 1.1.0, that was out a week ago, and has been downloaded half-a-dozen millions times so far, has added GPU acceleration for HD decoding under Linux and Windows. On Windows, as already stated, the code isn't working correctly with AMD Radeon cards.Therefore, we have been working with AMD on this topic and after common work, we are going to release a new version of VLC, versionned as 1.1.1, that will work with the upcoming ATI Catalyst 10.7 driver. AMD did provide us a beta of this driver and we have verified successfully that GPU acceleration works. Thanks for your understanding and your support.

- http://www.videolan.org/news.html

VLC GPU AC is disabled by default. Might be worth a go.

VLC -> Tools -> Preferences -> Input and Codec Settings -> Use GPU Acceleration (experimental).

mm135200: Bang on. DirectX only supports DxVA (hardware acceleration) on the primary monitor. Check the codec that you're using and try and use something like CoreAVC (for h.264) that is really CPU efficient and doesn't necessarily require video card acceleration.

Efficient codec sounds like a good idea. But, wasn't the DxVA/primary only resolved sometime after Windows 2K/DX8?

Rollux

362 posts

Ultimate Geek

#449543 18-Mar-2011 11:59

From memory, I thought that the ATI cards would only transmit an HD signal over HDMI if it was the primary display/only display output, or has this been fixed with newer driver revisions?

If not your GPU might be trying to scale, adding to its load?

Also, your TV - Plasma or LCD?

Lounge:
WIN7 HOME x64 HTPC - E6420 2.13Ghz - 4Gb 800MHZ PATRIOT RAM - ASUS HD5670 1GB
ASUS P5B-VM MOBO - LG BLU-RAY DRIVE - BG3595 TUNER - 1.5TB STORAGE
PANASONIC 42" FULL HD PLASMA - PIONEER VSX1019AHK RECEIVER - WHARFDALE DIAMOND 10 SPEAKERS

Man Cave:
XBOX 360 MODERN WARFARE 2 EDITION - PANASONIC 37" PLASMA - SONY MONSTA 5.1 SURROUND SYSTEM

littleninjaman

104 posts

Master Geek

#455352 4-Apr-2011 23:05

Yea I would check your cpu usage because the video sounds like its not being accelerated from the gpu any more. Is there any way you can tell if the video is using acceleration?

1 | 2