A very easy fade in

[Mike Tomei]

Not sure that I’m picturing it the same as you are, but I’m thinking that you could use some masking.

This talks about keying, but also masking:
https://www.videocopilot.net/basic/tutorials/04.Keying/

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[Darby Edelen]

I would recommend creating a solid layer in a new composition and adding the Noise & Grain > Fractal Noise effect to it. Change the settings so that you have a series of blocks:

Fractal Type – Basic (some others may work)
Noise Type – Block
…
Complexity – 1.0

Then place this composition inside the composition with your image (where the transition will occur). Add a Transition > Gradient Wipe to the image. For the Gradient Layer choose the blocky pre-composition you just placed here, for Gradient Placement you’ll probably find that ‘Stretch Gradient to Fit’ or ‘Center Gradient’ will work.

Now you can animate the Transition Completion from 100% (the image is invisible) down to 0% (the image is fully visible). You can set the Transition Softness to some percentage if you want each square to fade in, a higher percentage means a longer fade.

Gradient Wipe is an awesome transition you can use to control the reveal of an image using a grayscale map. I’d recommend playing with the fractal noise composition to see what else you can do!

Let me know if I can clarify any steps here.

Darby Edelen

[Jorge Mike]

Thank you, worked perfectly.

Now, another question. How can I add a colored grid, so the blocks fade-in just inside each block of the grid.