Dumb Question about screen capture

I downloaded ActivePresenter to do one very specific job. I need to capture still screen images from a DVD playing on my computer (or a streamed film) and insert those images into a PowerPoint presentation as individual slides. I have tried using the screen capture function under annotations, but the only thing I’ve been able to capture is my desktop image. I have a MacBook Pro. This program was recommended to me for this function, but I think I just need help getting started. I’m a little lost in the directions online as they seem to be geared toward recording video. Any help would be appreciated!

Hi,

Yes, this program is specialized for recording & editing video and interactive e-Learning content. However, I see the first three options work while the fourth one doesn’t. Can you please describe the problem in more details?

Regards,