Final Words

Well, was it worth the wait? Considering that PureVideo came as a free feature on GeForce 6 cards, it's more like unwrapping an early Christmas present - one that we were promised eight months ago.

NVIDIA's image quality is pretty good for a PC DVD decoder, PureVideo delivered de-interlacing image quality that was equal to and in some cases better than what ATI brought to the table. And although we did not feature the comparison here, the NVIDIA PureVideo codec even offered better image quality than the latest DScaler 5 build.

Despite doing better than the competition, NVIDIA still is far from perfect with PureVideo. The Big Lebowski test was proof alone that there's still room for improvement.

The scaling quality and WMV9 playback were both quite competitive with ATI's offerings, although not strikingly better. With hardware acceleration enabled, WMV9 acceleration is promising and will greatly reduce the CPU requirements for high definition content playback.

Overall we're pleased with PureVideo, there's very little to complain about. We aren't as happy with it as we could have been, but we mostly have issue with the way NVIDIA handled the entire situation remaining quiet for far too long. Not to mention that there can't be too many happy 6800GT owners out there knowing that 6600GT owners will have lower CPU utilization when playing WMV9-HD files.

In the end, PureVideo is a positive feature for GeForce 6 owners, a verdict that we are glad we can finally give.

Not so Ultra: No Decode Acceleration on NV40 and NV45


View All Comments

  • Rand - Monday, December 20, 2004 - link

    Anand- Could you provide the details on what the test platform in use was?
    You mentioned the processor of course, but it would be appreciated if you could disclose the other components in use.

  • Spike - Monday, December 20, 2004 - link

    But the 6800's come with NVDVD (at least mine did), isn't that basically their decoder? Other users are reporting their new (just recieved today) 6800 GT's coming with the DVD decoder on CD.

  • Anand Lal Shimpi - Monday, December 20, 2004 - link

    NVIDIA's DVD decoder has always been $20, unfortunately I don't know of a single manufacturer that gives away their DVD decoders for free.

    The WMV9 acceleration can be had without the DVD decoder, however that you will have to wait on Microsoft for as WMP10 needs to be updated.

    The features right now are mostly for HTPC enthusiasts who want the image quality benefits offered by PureVideo.

    Take care,
  • Spike - Monday, December 20, 2004 - link

    I am still confused on the "free" comment. If I have to pay $20 to enable a feature that was supposed to come with my 6800 GT, how is that free?

  • Anand Lal Shimpi - Monday, December 20, 2004 - link

    How to enable WMV9 hardware acceleration on ATI cards:

    Note: WMV9 acceleration has been disabled until Microsoft issues a new patch for WMV9. To enable this with other versions of Catalyst (with some rendering errors), RUN regedit -> HKEY_LOCAL_MACHINE -> SYSTEM -> CurrentControlSet -> Control ->Video and find your ATI reg value. The key to update is DXVA_WMV = 1

    Take care,
  • gordon151 - Monday, December 20, 2004 - link

    #16, It does. It just doesn't have the full capabilities that it was advertised as having. If you look at the descriptions you'll see only the 6600 AGP/PCI-E and 6800 PCI-E have use of the full capabilities of the encoder. Reply
  • Klaasman - Monday, December 20, 2004 - link

    I don't see on Nvidia's website where the 6800GT does NOT have PureVideo capability. They say all Ge Force 6 series. Reply
  • OriginalReaper - Monday, December 20, 2004 - link

    why couldn't *those* sites shut down next week instead :-\ Reply
  • Gatak - Monday, December 20, 2004 - link

    There are some facts missing when it comes to differences between interlaced and progressive video.

    NTSC TV broadcasts are recorded at 60fps, not 30fps. (PAL is 50fps). Each field is recorded after eachother in time. There is a 16.7ms delay between each field.

    If you were to de-interlace two fields into one frame you would loose half of the temporal resolution! This is a big mistake - especially for fast moving things like a football or hockey game.

    A proper de-interlacing method would render each field as a separate frame (like a TV does!), not blend or discard fields.

    24fps content, on the other hand, need to be converted to fit the 60fps NTSC (or 50fps PAL). It is nasty and should be banned. A DVD/MPEG-2 video is perfectly capable of storing 24fps progressive.

    So, what we want is to render 24fps content as 24fps progressive and TV content as 60fps progressive.

    Remember, a TV is already interlaced. There will be no problems with interlaced content because each field is rendered consecutively. It is only on a computer monitor which is progressive where we need to do field deinterlacing.
  • SlinkyDink - Monday, December 20, 2004 - link

    How can we enable hardware acceleration on our ATI cards now? (I believe its a registry edit) Reply

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