If frame rate <= 2, video from images - black screen

Question

I made a video clip of 40 images using Matlab first and then A4 Video Converter to compare the results. I found that something was happening that I did not understand, and maybe someone could explain to me.

When I set the frame rate at 2 frames per second and I play the video, I can only see the black screen.

If I set the frame rate to more than 2 frames on senconds, then I can see the video perfectly. This happens with both programs, so I think this is not a mistake, but maybe a problem with physics or signal processing.

Why is this happening?

Answer 1

I don’t know why this is happening, but a workaround could be to show each drawing twice. This will allow you to play it at 4 frames per second without speeding up the video.