This site does no longer host the programs avi2mkv, menc, blu2mkv and riptoh264.
mencoder stopped working at some point (audio sync failing).
If you are interested in the programs, please contact me.
There is a verison that works based on ffmpeg, and it combines all the previous programs in one big script. I am using this on a regular basis and it works for me. ;-)
There is still development, but not enough testing to release it to the public.