RTP Tools

http://www.cs.columbia.edu/irt/software/rtptools/

The rtptools distribution consists of a number of small applications that can be used for processing RTP data.

rtpplay
    Play back RTP sessions recorded by rtpdump
rtpsend
    Generate RTP packets from textual description, generated by hand or rtpdump
rtpdump
    Parse and print RTP packets, generating output files suitable for rtpplay and rtpsend
rtptrans
    RTP translator between unicast and multicast networks; also translates between VAT and RTP formats.