miktee, before I forget, are the files in question AVIs or MPEGs? Do you have a conversion program or do you need one? If you need one, give me a few minutes to upload one for you to use. I will edit this post of mine as soon as the program is uploaded.
I am uploading a program called Allok Fast AVI/MPEG Splitter. Try it, without splitting i.e. just set it to 'split' the entire clip and that way it simply will convert it instead. This program is the fastest convertor/splitter I have ever used and I`ve used practically all of the apps on the market.
http://www.file2upload.com/file/39564/f1-rar.html
check your private messages for further info.