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Activity Forums Adobe After Effects Time has come: Problems with DV-Codec Color-Sampling

  • Time has come: Problems with DV-Codec Color-Sampling

    Posted by __peter__ on August 21, 2005 at 7:01 pm

    For so many Years I never had any trouble with the colorsampling of DV. ok. sometimes keying, but thats a nother issue 🙂

    But now I have a animation where Yellow squares are attatched to Blue squares.

    And where tey meet: We see of course GREEN :-/

    It’s not when working with TGAs in AE but when rendered out in DV-Codec.
    I know the reason but is there a solution ? Some kind of Blurring or noising the areas ? Or something else ?

    BTW: I am in PAL-Country so I guess our PAL-DV is 4:2:0, if that matters.

    Thanks for every idea or solution.

    __Peter__

    Barend Onneweer replied 20 years, 9 months ago 3 Members · 2 Replies
  • 2 Replies
  • Filip Vandueren

    August 21, 2005 at 10:37 pm

    Try adding an adjustment layer that Gaussian Blurs 2 pixels, but set it’s transfer mode to “color”.

    Do a test-render to DV with that, in theory DV only has limited resolution in the chroma, not the luminance-domain, so there’s no need to blur that.

    2 pixels seems about right to me, since chroma has half the resolution, but experiment to get the best value.

  • Barend Onneweer

    August 22, 2005 at 7:40 am

    Yes, this is why DV sucks as a final output format, especially for graphics. The codec was tuned for photographic (video) images, and is quite relentless in it’s treatment of graphics.

    Why are you outputting to DV? If you go straight to DVD for instance, you’ll get much better results. I don’t know what the final purpose of the material is, but I recommend staying clear from the DV codec for final output.

    Bar3nd

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