How to convert 8mm tapes to H.264 for Apple TV?

Well the title pretty much sums it up. My parents want to convert all our family videos to use with the Apple TV. Also, is H.264 compatible to view on a Windows PC (I know, dumb question)? We want to share the vids w/ the rest of the family as well who don't have macs. Most of the services in my area only convert the VHS to DVD.