user26178: I remember some old video editing programs used a grayscale image to be used as a transition pattern.
Basically what they did was using the different levels of a grayscale image as a step for the transition.
Here is an example. Given the first image, when the program was analyzing the gray level marked with the red line as a threshold, the transition would look like the image below.

Do you know if that can be done in a free program like Davinci Resolve, Hit Film, probably Blender?
And a tip of how can be implemented?
images by pixabay

user21868: What you want is called a Gradient Wipe in Premiere Pro or a Luma Fade in Davinci Resolve.
Just make sure your gradient image is a 3rd layer as long as your transition, and is selected as the 'gradient layer.'
(This should be a comment but I don't have enough karma to comment in this forum. Hope this helps :) )

26178: <p>I remember some old video editing programs used a grayscale image to be used as a transition pattern.</p>

<p>Basically what they did was using the different levels of a grayscale image as a step for the transition.</p>

<p>Here is an example. Given the first image, when the program was analyzing the gray level marked with the red line as a threshold, the transition would look like the image below.</p>

<p><a href="https://i.stack.imgur.com/cf7fJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cf7fJ.png" alt="enter image description here"></a></p>

<p>Do you know if that can be done in a free program like Davinci Resolve, Hit Film, probably Blender?</p>

<p>And a tip of how can be implemented?</p>

<p><sub>images by pixabay</sub></p>
 21868: <p>What you want is called a <a href="https://www.youtube.com/watch?v=DI3v5TK4sYM" rel="nofollow noreferrer">Gradient Wipe</a> in Premiere Pro or a <a href="https://www.youtube.com/watch?v=rp9re6HnXoM" rel="nofollow noreferrer">Luma Fade</a> in Davinci Resolve.</p>

<p>Just make sure your gradient image is a 3rd layer as long as your transition, and is selected as the 'gradient layer.'</p>

<p>(This should be a comment but I don't have enough karma to comment in this forum. Hope this helps :) )</p>
