youtube rtsp grabber
to grab rtsp addresses use http://SERVER_URL/rtsp.php?id=YOUTUBE_VIDEO_ID
YOUTUBE_VIDEO_ID like 6qmj5mhDwJQ
This file returns two urls seprated by comma (,) which the first url is "H.263 video (up to 176x144) and AMR audio" and the second second is "MPEG-4 SP video (up to 176x144) and AAC audio."
Both are in 3gp format