ProShow Speed Demons

I recently helped someone get a cutout of Mickey Mouse to go from the right side of the screen to the left side of the screen in lockstep with a second layer, both Mickey and the other layer starting and finishing at the same time. As easy as this may seem in concept, it’s actually the root cause of baldness, particularly with PNG files where we don’t easily see the problem. The illustration below represents two layers, one a small red square, one a larger green square, and dashes showing distance:

Notice there’s more distance between the edge of the red square and the edge of the screen than there is for the green square. Someone has a longer distance to travel–namely the red square.

Trying to get differently sized images like these squares to travel in sync across the screen is a nightmare…

One-third of the way across

Two-thirds of the way across

Awful, isn’t it? They’re each marching to a different drummer.

So, let’s say we have a small red square in one layer and a large green square in a second layer, and we want the left edges of each to be in perfect alignment as they travel from right to left. In the illustration below, notice the vertical dashed line, which represents a guideline. It was derived from butting up the green square to the right side, then drawing a line so it coincided with the left side of the square. The red square was then moved so its left side was also against the dashed line:

For this example and in an image editor, I made the dimensions of the green square’s file 1600 pixels by 900 pixels, which is a 16:9 ratio, and then moved the square to the extreme right edge. Then I dragged the red square into the same file so I had 2 layers. Using a guideline (which I forgot to show here, but which is just like the dashed line above), I placed it on the left edge of the large square and then moved the small square up next to that same guideline. Once that was done, I saved each layer as a separate PNG file. The images ended up looking like this:

With these 2 files, the rest was a piece of cake. In ProShow, I added the two files to a slide and moved the layers so the left sides of the squares were lined up on the left side of the screen just barely out of sight, making sure both layers had identical horizontal pan settings. I then sent both layers over to -100. They traveled as if joined at the hip. Job done, hair still on head.

Here are the results:

One-third of the way across

Two-thirds of the way across

Published in: on November 20, 2011 at 1:00 pm  Comments (2)  
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  1. Thank you, Barbara! Just what I needed…

    • And if it turns out it’s not quite enough, you know where to find me.

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