We usually recommend linking to the video to keep your file size low. Depending on the circumstances (for instance, the user will obviously need an internet connection), this should work for most cases. You would use an embed code if the video host has that available (YouTube and Vimeo do). By embedding them, you will have access to that service's controls.If you haven't already, I'd suggest walking through the Digital Publishing Course. You can start with the lesson about videos. You can try out video embedding even using the Demo version of in5 to start.