flvstreamer

http://savannah.nongnu.org/projects/flvstreamer

flvstreamer is an open source command-line RTMP client intended to stream audio or video content from all types of flash or rtmp servers. Forked from rtmpdump v1.6 with encrypted rtmp and swf verification support removed. This tool provides free interoperability with the previously undocumented adobe RTMP protocol so widely in use on the internet today. It was developed entirely by reverse engineering methods and without access to any proprietary or restrictive-license protocol specifications.