How does Iphone4 send video information? PS: I didn't escape.

When texting, there is a small camera button on the left side of the input box. Click it to select Video or Photo and Select Existing, and then click to take a photo or video. After recording, just type it in the box. It will be sent by 3g MMS. Then do it yourself, because I heard the "monkey" in several episodes when they sent videos to each other.