the converter I got from tomabo.com was a trial. I did not realise this so am trying
http://www.videotovideo.org/ as suggested by Fifer. Seems to be working ok but has taken me some time to work out what was going on. At first I could not get the mp4 file that it created to run but that was because it was still converting to mp4.
fingers crossed it all goes well
macafee2