Shorten a sequence for Facebook

I have created a 106-second sequence and it is just the way I want it.  Facebook will only allow me 90 seconds for the sequence (it's a long boring story). Without trimming or removing any clips, can I compress/shorten/time warp/squeeze the sequence -- without comical fast motion or audio distortion -- to fit the 90-second-or-less requirement?  I've heard this is done for TV to make room for more commercials.