I am trying to create a timelapse video in Movie Maker but i am getting some weird behavior. I am importing 250 photos at once and then changing the duration on all of them - nothing crazy. The problem is that random pictures, not all, have black bars along the left and right sides of them. Only some pictures are zoomed in to fullscreen which is what i really want but as long as I can get them to be a uniform view i can work with it. All the pictures were taken by the same camera in succession at the same resolution and everything. There aren't many tools or options to change in Movie Maker so i don't know what to try. When i change the aspect ratio of the video to 4:3 the picture that have the bars along the sides then have bars on the top and bottom.

Again, its not all the pictures in the project. The first 30 or so are zoomed to fullscreen then they switch to displaying bars and after a few pictures it flashes back and forth making for a very choppy and unusable timelapse video.

The only workaround i have found is importing the photos in batches of ~50-75 and then the bars dont appear at all. This isn't going to work for me on future videos that will have many more photos