I’ve been playing around with something called ffmpeg. It’s a wonderful bit of free software that could take care of the video making bit of JellyCam.
The thing I’ve slapped together is embarrassingly rough. It’ll pause a lot and probably give you strange messages, but it also works now and again!
To use it you need you files to be named in sequence starting with “pic” then a number starting with zero. I.e. pic0.jpg, pic1.jpg, pic2.jpg, pic3.jpg, pic4.jpg etc. It works with png files as well.
There’s not much to it, just a few buttons really, but if you’d like to give it a try feel free to download it and let me know if it works.
It’s windows only I’m afraid as I need a Mac to make the Mac version.