Video considerations for mobile visitors

I'm creating an adult tube site and most of my visitors will be on their mobile phones. I'm wondering if mobile visitors will be able to view embeded videos from xvideos, xhamster, etc. I tried to embed videos from the mobile version of xhamster but there doesn't seem to be embed codes for those. I've also heard that mobile visitors can't view flv vids. What do I need to think about when it comes to video for mobile visitors? Thanks.