how to analyse the effects of ffdshow

Discussion in 'Desktop & Laptop Computers Forum' started by Kaz, Feb 25, 2005.

  1. Kaz

    Kaz
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    on a bit of a mission to button down a set-up (that I believe in and won't have a hankering to tweak) before leaving well alone....

    So I'm trying to prove to myself and anyone else who's daft enough to listen that ffdshow is helping.

    I'm using TT1.5's screen capture and comparing with and withouts. I've a recollection of some mouse over pictures on the TT forums where yoda looked obviouslsy clearer with ffdshow doin some stuff. But try as I might, my bitmaps are pretty much identical.
    Is VMR and overlay "stuff" being bypassed in the method of screen capture and ruining my tests?
     
  2. KraGorn

    KraGorn
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    I've no idea how the screen grab feature in TT works but it may very well be taken at the point when the image has been decoded and before processing.

    This is the article you're thinking of, not sure if it details in there how the screen-shots were taken.
     
  3. Kaz

    Kaz
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    that's the one! quite compelling isn't it?

    It's obvious really, TT passes it onto ffdshow which then sends it to the graphics card to render.
    indeed, why would a screen capture feature in TT have access to the image that gets rendered? doh!

    so what now PrtScr? I'll have a look for another app, the type PC mags do for showing the differences between graphics cards and settings for games seems a good place to start.
     
  4. KraGorn

    KraGorn
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    I really have no idea how those shots were taken, it may also differ between VMR and Overlay.
     
  5. hebawom

    hebawom
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    You can apply your settings to the right hand side of the image only. That way you can see the original playing on the left and the processed on the right. Have you tried this?
     
  6. Kaz

    Kaz
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    that tick box is always greyed out for me?
     
  7. inzaman

    inzaman
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    I have seen that but never tried it, i think i will have to have a play around with that, infact i am happy with the picture at the mo so maybe it is not such a good idea :)
     
  8. Pbryanw

    Pbryanw
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    Can anyone tell me what option I need to select to do this? Is it under video?
     
  9. dapex

    dapex
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    I have seen the only right half box under postproccessing. It is gryed out under some screens but it should be available under that screen

    Cheers
     
  10. Pbryanw

    Pbryanw
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    Ta. Found it. Seems like the effect of ffdshow on my dvd's are very subtle but then I'm viewing them on a 17" LCD not a whizz bang plasma or 6ft projector (which I expect is where the real benefits can be seen).
     

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