VLC - the cross-platform media player and streaming server
VLC media player is a highly portable multimedia player that supports various audio and video formats (MPEG-4, MPEG-2, MPEG-1, DivX, mp3, ogg, ...) as well as DVDs, VCDs, and various streaming protocols. It can also be used as a server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.
The stream can be MPEG 2 TS in UDP or HTTP packets unicasted or multicasted on an IPv4 or IPv6 network.