My save movie wizard is up to 36,000 minutes and rising! It won’t stop and start working through the percentage?

My save movie wizard is up to 36,000 minutes and rising! It won't stop and start working through the percentage? It would not even start that until I replaced some videos with still pictures. I have enough memory so I am sure that is not the issue. Help! What can I do to save this project....it needs to be in regular size,..small wont work for the videos and I don't want to keep dumbing it down and losing meaning for the song.

ps: I also often keep crashing when I make the video...keeps freezing up...what can I do for that as well

thanks for any help!

-David