I have a bunch of images grabbed in real-time from an experiment. Each image has also a timestamp of when it was produced/measured/generated. I would like to make a video from those images. The problem is that framerate is not really static as some images took longer to make. So I am searching for a way to make those images into a video where images would be displayed on more or less given timestamps (it does not need to be really precise (just that it is not noticeable when watching), but there should be no time skew in longer run), showing last given image until new image, something like stop-motion (so no interpolation needed).
Framerate in general is around 1-3 FPS.
I am searching for a solution which uses open source software.