How do I embed an mp4 video in a text box?
MP4 videos can embed in a text box using the Rich Text Editor. Other file types that can be embedded in a text box are .FLA, .F4V, .3GPP, .M4V or .MOV files.
See How do I upload files? for more information on uploading.
This returns the display to the Movie Properties box with the URL for the video in the URL box.