Not an inconvenience at all. Happy I can help. This is such a great idea!
That worked but my next hurdle is this:
I edited the makemovies.bat file to only include Amidar just to test with. I noticed when I double clicked the file and the DOS window popped up, I got the message: 'could not find I:\mame\moviesnp\ami*.png' which I assume is fine (at least it didn't appear to hold things up).
Amidar came up in a small window on my desktop and ran just fine, then it ultimately closed.
Anyway, VirtualDub kicks off and it appears to process and when it is nearly done, I get a small, UNhelpful error dialogue box (about the size of a postage stamp) that says: VirtualDub Error followed by three ?'s in the text portion of the box. I am using VirtualDub 1.6.4 (build 23174/release). That was what was on the page that your link provided so that was what I downloaded. At the same time the XVID status windows also pops up.
When I click okay to get past the VDub error I have to manually close the VDub application and the XVID box, and then everything appears to complete although I spotted an amidar.wav and vdb file I believe that then gets deleted. There was an Amidar avi file in the movies subdir that is 13.2 MB in size.
One weird thing when I try to play it in Windows Media Player (old and new versions): the video is 'squished'. The aspect just isn't accurate at all.
Thanks again for all your help. I am close now!