iPhone now enhanced with video ringtones
Unfortunately, the option to add video ringtone to a contact is available in the advanced version only, which comes at a fee. Also, the free one isn’t bug free and in our case if you don’t answer and incoming before the network disconnects the caller, the music will go on (although the video will be hidden). This will either freeze the phone after that or will not display the video in following calls (to alleviate this issues, a restart is required).
source: iFonetec via Gizmodo