Splitting a mov File?

I have a 14.8 MB .mov movie file on my wife's pc. (Suse 9.1) My wife has asked me to split it into two smaller parts so she may E-mail it to her Mom. I have read that mplayer/mencoder can do that. Splitting a file with mencoder is said to be easy, "you just tell it to copy audio and copy video and stop at some position. You end up with a nice avi file" I don't see that feature in the version of mplayer I just installed. Anyone done this, please? Thanks! doc