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Does nVidia Pure Video really enhance the quality of video files?

On certain files yes, mainly de-interlacing. But the main reason for it is that it moves the decoding away from the CPU and onto the GPU (again for certain files)

De-interlacing is very important on large screens, play a DVD on a big screen without any post processing/de-interlacing and you'll see odd jaggy lines everyother line, where the video has be enlarged. De-interlacing fills in blanks, making your picture look far better.

There are software de-interlacers, but again, its your CPU that's being used, purevideo enables hardware on the card to do it.

Generally tho, if you just using your PC for games and the odd DVD or Divx, then you dont need to fork out for purevideo, you only really need it for a media centre or HTPC type system.
 
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All 6 and 7 cards have it. You can trial it for free. Im thinking it might be part of the drivers soon tho, as ATI now has the same functions on its AVIVO (x1xxx cards) using just the Catalyst drivers.
 
D/loaded pure video this week to run on a skystar2 pci tv card and I can say it makes a major difference to picture quality.It does not like running with other video decoders so check with decchecsetup from microsoft to find what you have got running and I suggest removing them before running.
 
Purevideo may be in the drivers soon since ATI has AVIVO. But Purevideo has far higher quality for de-interlacing which is possibly the reasont hey are charging but I doubt it.
 
I think the original reason behind charging for the purevideo files, was that Nvidia did not want to pay the MPEG consortium the license fee for MPEG2 decoding, on every card which was sold.....especially as, at the time they were shipping most cards with a copy of intervideo DVD trial versions, so it was just another cost Nvidia didnt want to pay, and didnt want to pass onto there users....as they decided that many of them wouldnt have used it anyway (which is almost certianly right, if you take the % of 6/7 series owners who are using purevideo its most likely less than 0.5-1.0%).
 
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