I just installed ActivePresenter. I recorded a short video of my screen, and then exported it successfully as an MP4 file. Then I tried exporting it as images. I assumed that it would save 100 PNG files. It only saved one PNG file.
Export Images will export each slide into an image. If you want to export your video slide into multiple images, you must split that slide into multiple slides manually.
For new projects, you can use Record Software Simulation to record a series of image slides instead of one video slide.