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R
Rolf5E3D
Inspiring
August 10, 2021
Answered

"Invert" color key

  • August 10, 2021
  • 2 replies
  • 11787 views

If I have a person with a blue hat and I want everything else in the clip except the hat to be transparent, how do I do this?

this would be as a "invert" color key in Pr

This topic has been closed for replies.
Correct answer Mylenium

You either apply an Invert effect after the key or use the keyed layer as an inverted track matte on a a duplicate of the original source. Pre-composing the key may be necessary to get correct results.

 

Mylenium

2 replies

R
Community Expert
Rick GerardCommunity Expert
Community Expert
August 10, 2021

The most efficient way to pull a procedural matte (color key) depends entirely on the shot. If the blue hat is fairly evenly lit you can use Keylight. You may need to do some serious color correction before you can get any keying or matte-creating software to do a good job. 

 

Post a screenshot of the footage and I'll be glad to help you figure it out. If you can pull a good key in Premiere Pro and that's all you need, then there is no need at all for an AE comp to pull the key. Just render a Lossless With Alpha copy of the footage from Premiere Pro. 

 

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    R
    Rolf5E3DAuthor
    Inspiring
    August 10, 2021

    Thanx,

     

    I used linear color key, invert and alpha chanel.. This worked great. I think I will use a black hat so

    tne color should be possible to get fairly even.

    R
    Community Expert
    Rick GerardCommunity Expert
    Community Expert
    August 10, 2021

    Be careful, black can be extremely difficult to use as a source for a matte. Any very bright hat that is a different color than any other item in the shot would be better than black. Even if the lighting is not perfect.

      Mylenium
      MyleniumCorrect answer
      Legend
      August 10, 2021

      You either apply an Invert effect after the key or use the keyed layer as an inverted track matte on a a duplicate of the original source. Pre-composing the key may be necessary to get correct results.

       

      Mylenium

      R
      Rolf5E3DAuthor
      Inspiring
      August 10, 2021

      Thanx!

       

      What key should I use, there is no color key in Ae?

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