View Full Version : Nvidia GeForce FX 5200: Hardware Decode?
08-13-2003, 06:43 PM
This is a bit of a continuation from another thread. I have the FX 5200, which supposedly has hardware MPEG2 decoding built-in. I'm fairly certain my machine isn't taking advantage of this when I'm running Sage because I'm averaging 80-90% CPU utilization. It's not the fastest machine, so if it's possible to make the 5200 do the work, that's what I want to do.
Help me understand?
If you have a WinTV-PVR
Change the 0 to 1 reboot that should take of the problem
Depend on the decoder you install it could be under
08-14-2003, 07:05 AM
By applying the registry settings above you will enabled "hardware assist" mpeg2 decoding. You should see your CPU drop to around or below 20%.
08-14-2003, 05:21 PM
Change Dxma to 1? Change Hwmc to 1? Change both to 1?
Any way I set it, I get an error saying there's a problem with the MPEG 2 decoder. Sorry if I'm missing the obvious here, but I can't get it to work.
08-15-2003, 07:20 AM
I also got a error message when I tried it last night. So, I downloaded the latest Hauppauge Video Decoder (http://www.hauppauge.com/html/sw_pvr_250.htm). After uninstalling the Intervideo Filter SDK, installing the update, and rebooting for good measure, I could then play video with the Intervideo NonCSS Video Decoder selected. However, after doing all this I couldn't see any difference in the CPU usage for my Geforce4 MX.
There is another thread on this topic here (http://www.freytechnologies.com/forums/showthread.php?postid=1627).
I discovered my cyberlink decoder which mediaplayer and everthing else uses was messed up; only shows 1/4 of the picture and bad color. Reinstalling PowerDVD didn't fix it, so I did a system restore. I don't know for sure that installing the Hauppauge Video Decoder caused this, but be sure the set a restore point, just in case.
08-15-2003, 11:47 AM
I also tried this and did not find any drop in processor usage until I changed the Renderering Filter from Default to Overlay and restarted SageTV. My CPU usage went from 50-60% on my MX440 based SageTV client to 15-19% and from 30-38% on my Radeon 9200 SageTV Server to less than 9%. As far as picture quality goes, I think the non-accelerated looks better.
08-15-2003, 07:08 PM
Wally, thanks for the tip, but I don't get a picture whenever I use anything other than vmr in either SageTV or the WinTV apps. I have discovered that if I use the Geforce nView setting to clone the monitor to TV out it uses almost 3 times as much cpu (30%) as if the the TV is attached as a second monitor (10% cpu). I can't explain this.
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