Speed up the video, it'll work. YouTube has some software that automatically runs and checks every video for sound. So if there's some differences from the original it won't be able to detect anything.
It'll also work for a while, but that won't really stop an individual from seeing it and filing copyright. See this all the time with music. Something a pop star puts out can be uploaded and sped up, gather some millions of views and with that you can work out whatever you want with marketing on it on the side. I see most people just collecting AdSense payments though.