Hi
If you are using VP version 3.xx then you find there is a bug here....
If your video consists of a single image it will NOT render.
Version 3.xx videopad will ignore the last clip on the sequence line if it is an image. This means if you have just one image on the sequence line it will be ignored.
If you follow this by a second image (or a video clip) then it will render OK and the second image (if it last on the timeline) will be ignored. etc.
For some reason (probably associated with the image count) the last file on the sequence line will be missed off if it is an image.
Video clips work OK though.
The way round this if you are making a slideshow or, as it seems in your case, using a single image is to add a blank frame (black, white nor coloured) to the end of the sequence after your image. You can fade out your image into this. If you add a further blank frame this THIS will be missed off and your your image will fade into the first black frame.
I have mentioned this in previous posts
Nat