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A
abdulmueed19
Participant
November 15, 2019
Question

Removing fill after applying stroke

  • November 15, 2019
  • 1 reply
  • 1071 views

I have a C4D render PNG sequence comprising of Gradient colours. I want to make a duplicate it so that i can make it transparent and animate its stroke by increasing its scale. How can i do it. Until now i have done following things:

I have decolourise it to one white colour and tried to key that but that results in irregular stroke.

I have make it gradient colour and tried to zero its opacity but the stroke changes along with it.

 Any solutions?

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1 reply

Mylenium
Mylenium
Legend
November 16, 2019

Impossible to advise without seeing a screenshot/ sample frame.

 

Mylenium

A
abdulmueed19Author
Participant
November 16, 2019

I want to make the gradient transparent while the strokes needs to be with the same opacity. I have tried keying it but the result was not satisfied as the strokes was removed partially. Anyother solutions?

R
Community Expert
Rick GerardCommunity Expert
Community Expert
November 17, 2019

Thanks for your answer. The last lines was so close to make your answer 'correct' but it will not help me to animate the strokes in the way that i have imagined. I want to scale up the stroke while keeping the image sequence size same. Can you please suggest any other way. I dont want to render the whole sequence again 😞 

Details about Project: Project just includes the image sequence on which post-render effects and elements are applied. To make it more eye-catchy i want to animate the stroke by increasing its stroke size. 


Try this:

  1. Duplicate your image sequence layer twice.
  2. Set the top copy as an alpha track matte for the second layer
  3. Apply LayerStyle>Stroke to the second layer
  4. Animate the size of the stroke

I just used a shape layer but this will give you the idea:

As long as your image sequence has an alpha channel so there is transparency surrounding the shapes this will give you the ability to add a stroke around the transparent edges of the image sequence and animate the size of the stroke.

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