I figured MP4 is the way to go. I still have a few options Mp-4 Small - MP 4 Medium MP 4 Good MP 4 Best and MP4 HD 720. Because the FIVER email only allows 30MB - I can barely fit my 1 minute video in the attach box using MP4 HD. I want to give the best quality possible so in this instance I chose MP4 HD. It takes the customer about 20 or more seconds to upload but the quality is as crisp as the original. Being this is a Video Birthday card do you think the customer will be impatient with the upload. The quality to me is worth the wait but we live in a “I want it yesterday” Society…what do you think?