Unfortunatly I do not have any of my older clips as I delete them after making a DVD. I checked my windows settings and all is normal. The only thing I can think of is perhaps my anti virus has caused my Roxio to stop working. I have not used it since Feb when i installed 2013 Kasperski, you may have been right with the program idea, I forgot to include K when thinking of new programs.
Maybe i will try windows movie maker for a quick test, then if not I will look for a that converter you mentioned.