You could try the following:-
1. D:\brj\downloads\thefilesplitter\The File Splitter - Tutorial.htm for thefilesplitter.
2. Do a search for TMPGEnc.
3. Do a search for hjsplit.
(with acknowledgements to siouxah1)
There was a similar a few days ago but try as I might I have not been able to locate it using the search!