I'm using MLT from the command line on a series of images. When I run: 

`melt 0.jpg 1.jpg 2.jpg 3.jpg`

It generates a video where each photo occupies one frame (4 frame long video). I want each photo to occupy 100 frames. I've tried every combination of properties I can think of, such as: 

`melt 0.jpg out=100 1.jpg in=100 out=200 2.jpg in=200 out=300` etc. 

But the results are not as intended. I've also tried organizing into tracks, and melting from an XML file. At best, I've been able to get the photo to show up on the first intended frame, then 99 blank frames. 

What is the best practice for extending the visible length of the photos? For a simple example, I would like to have a single track with 10 photos where each photo is organized into subsequent frames of 100. Eventually, I will be combining videos and photos.

When working with videos, I've had no issues, and my understanding is that the `in` and `out` properties are intended for video, but I haven't been able to locate any examples of how to extend the visible length of image producers. 

Thanks for any ideas or tips! I'm really excited to be learning this awesome tool.