Will PureVideo help Video-In 7800?

[Lord Banshee]

ok i am trying to play my PS2 no my computer. Well my 7800 has a Svideo input.

It seems that it doesn't look any better on my monitor than on my TV, i am using video dub with nvidia wdm drivers.

I was hopeing to get 480p or 1080i on my GT4 to display on my monitor, hmm that doesn't work S-Video doesn't support this lol.

So then i was thinking maybe PureVideo has something in it to make it look nicer.

I don;t want to capture and store on hard drive, just view the imput signal the best possible.

Is there an HDTV input card or something??

What you guys think about this?

 

[xtknight]

Sorry, nope. Component inputs would require too much bandwidth at this time for anything but actual ICs themselves (hard disk is way too slow), and composite ones look pretty bad. I'm in the same dilemma with my HDTV tuner but fortunately it has VGA/DVI outputs which I just plug directly in to my monitor's 2nd VGA input. PureVideo is only for decoding video. FFDShow can help though with its raw video filter. I've had a little luck making analog TV look better but I was using coax at that time.

I guess it's possible the video card could input the YPbPr with a realtime decoding chip, then write the YCbCr directly to a specified memory address which a player application is actively reading. I'm not sure though, it may have to use Overlay only to deal with the bandwidth.

http://www.cs.sfu.ca/CourseCentral/365/...erial/notes/Chap3/Chap3.4/Chap3.4.html

At 1920 x 1080, 60I (which CBS and NBC have selected), there will be 1920 x 1080 x 30 = 62.2 millions pixels per second. Considering 4:2:2 chroma subsampling, each pixel needs 16 bits to represent, the bit rate is 62.2 x 16 = 995 Mb/sec.

1920*1080*30frames*16bpp=995.328000 Mb/sec.

That's in megabits. (995.328000 Mb/sec)/8=124.416000 MB/sec for realtime YCbCr video. Actually not as bad as I thought.

USB 2.0 high-speed mode or Firewire 800 could easily deal with 1280x720 though.

1280x720*30frames*16bpp=442.368000 Mb/sec
(442.368000 Mb/sec)/8=55.296 MB/sec

Surely either of those could be transmitted via PCI Express x1 (500 MB/sec) just fine so I take my statement back that it would require too much bandwidth. I do remember ATI said in an interview they did not have plans for implementing YPbPr input though. It would be child's play for 1GB of DDR400 in single channel (3200 MB/sec), a P4/A64 CPU, and a program coded by somebody competent.