YouTube.com lets anyone upload movies to their website for free. The movie is hosted on their site, but shows up on your site. Doing this avoids some compatibility issues you may run into if you simply link to the movie file on your host.
Linticulars are made from 2 or more images that have been sliced into thin vertical segments and then topped with a clear faceted lens that makes them appear to move as you see them from different angles.
There is certainly something to be said for loyalty. And that goes both ways. Most seasoned designers work with the some 2 or 3 printers all the time. Once you find dependable printers stick with them.