Upload my own videos to Google Play? Is it possible to sync my own video with Google Play Video (like in Google Play Music)?

I know that it's not possible on Google Books, I am wondering how about videos.

What will be a good alternative for syncing videos?
Right now it is not possible to sync through Play Video, however, you may soon be able to purchase movies from the market and have them stay in the cloud until needed.

You could try alternatives such as Box, or Dropbox, (there are many competitors in this file-locker space), they allows you to sync nearly anything across devices.

Google Video, at least on my Xoom, will pick up movies out of any folder without the .nomedia file in it.

(edited to remove falsehood of no Google Services allowing syncing :) )