1. Set the prefix of the file name to anything, instead of "vlcsnap-"
2. change the numbering convention. Right now it seems to use a time stamp that looks like "vlcsnap-336784.jpg."
I need it to number the screenshots like this, including the fixed length numbering:
MyFileName-0000001.jpg
MyFileName-0000002.jpg
MyFileName-0000003.jpg
MyFileName-0000004.jpg
MyFileName-0000005.jpg
If it could do this it would work perfectly with another piece of software I use to display recently taken pictures in order. The naming and numbering is critical. It's for Halloween. We have a setup that takes photos of people and displays the last couple images on headstones with monitors in them. It's similar to ride photos on rollercoasters.

Is there any chance VLC could be made to do this? It doesn't seem like something that would be terribly dificult to do. VLC already does all the overlay and de-interlacing stuff we needed but it's down to this tiny little naming detail that screws everything up.
Thanks for any help and advice!
-Dan