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Difference between PureVideo technology and PureVideo decoder

Discussion in 'Desktop & Laptop Computers Forum' started by Mandarin Man, Oct 11, 2005.

  1. Mandarin Man

    Mandarin Man
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    I'm a little confused about the whole PureVideo terminology. As I understand it, there's the PureVideo MPEG2 decoder on one hand, and the PureVideo technology implemented in selected Nvidia cards on the other (just hardware acceleration for the decoder or more?)? What's the difference in features be between the two?

    I intend to buy the decoder and use it with my simple Radeon 9200se card. Will I missing out on anything when not using it in combination with the PureVideo GeForce 6 and 7 series GPUs?

    Thanks,

    Roy
     
  2. meansizzler

    meansizzler
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    Purevideo technology

    Purevideo Decoder

    Basically the Purevideo technology found on geforce 6 and 7 cards help deocde hi def and standard def video, and also improve the video playback by making it more smoother and vibrant, well that's what Nvidia say, to me it's just a marketing scam, in order to use purevideo as wel as having a card to support it you also need the right software, so for MPEG 2 you need the Purevideo Decoder, which is just like any other deocder but it can make use of the purevideo support of your card, for WMV you need the Purevideo DXVA update..., anyway if you want my advice, stay well clear, decoding Hi-Def video is more CPU dependent jsut make sure you got a fast enough CPU, and any card will do, weather an Ati 9200 or a Geforce 7800, you won't notice any difference.....if using Ati cards, I highly recommend Intervideo's WinDVD 7 decoder, it's the best out there in terms of Video Quality, and fully supports Media Center, but requires a few registry edits to sort out the sound, PM me and i'll give you them..you can get a demo of Win DVD 7 from www.intervideo.com
     
  3. Welwynnick

    Welwynnick
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    Might just be me, but I think this is really interesting stuff.

    On this occassion, I think I can be a bit more concise than that.

    AIUI, Purevideo Decoder is the SW decoder that runs in the CPU to decode the compressed data in the DVD to digital component video. It is the MPEG 2 decoder.

    Purevideo technology is the GPU borne processing that performs the more complex interlaced-to-progressive conversion (de-interlacing), then scaling from PAL (or NTSC) up to the output resolution (hopefully the native res of the display), aspect ratio converison, and perhaps additional video "improvement" processes like noise reduction and diagonal smoothing.

    That's my understanding, and from what I've read, it doesn't do the job as well as a good video processor, but is distinctly better than the ATI efforts at the same thing. How it compares with something like WinDVD 7, I would love to know, because that could be a very good solution.

    Nick
     
  4. meansizzler

    meansizzler
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    Win DVD 7's Colour is way better than that of Nvidia in Media Center, the Purevideo decoder produces a dull image, sure you can adjust the brightness with the decoder properties but then when you try playing an mpeg 2 file in media player then it is super bright, so you have to adjust the colour again, then again when using media center...to much hassle, Win DVD 7 works out of the Box, no messing around with any settings apart from selecting the audio mode, by the way I never Use DXVA it causes faint scan line, which you notice if using a PC display, no matter what card your using, been that way since they introduce it, if you don't see the scan line you are truly blind...DXVA is a load of crap...you get a little drop in CPU usage but a worse off image...anyway Win DVD 7 is the best out there...if anyone wants to know how to keep the audio settignn under media center, send me a PM, I have a registry fix..
     
  5. Mandarin Man

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  6. meansizzler

    meansizzler
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    It is the same, you just get a player with it...
     

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