Exported video has things moved around. Adobe Premiere Elements 14.

[KarlJohanson]

I have an image with some blue screen areas.
Premiere removes the blue, as intended.

I put three videos behind the still image, and size and position them to show up in the 'holes' where the blue patches were.

In Premiere everything looks right when I run the video.

When I export the video (custom export the same size as the initial image 720 x 540), the videos behind the image have all moved randomly.

What I tried to fix it.

I tried starting again from scratch; same problem.

Shut down and restarted Premiere.

Rebooted Windows 10.
I tried a different formats (WMV and AVI).

I tried adding only one of the videos behind the image, but exporting also moved the video behind the image so it was out of place.

[Steve Grisetti]

What format and resolution is your blue screen video?

Also, when you look under the program's Edit menu, what is listed on the General page under Project Settings?

Unless your project settings and video specs are a perfect match, you might see some drift, particularly when dealing with non-square pixels.