Introduction ============ sydra is a toolbox which allows you to set up multiple bidirectional Video/Audio streams from external locations. sydra has been written to be used for the Elevate Festival in Graz Austria in order to involve external locations to present themselves at the festival. Sydra consists of several components: sydra-rtp: This is the basic utility for the task which is based on GStreamer and is written in C. The utility creates a gstreamer pipeline to send or receive RTP-based Audio/Video streams. For a bidirectional connection 2 instances of sydra-rtp are required on both sides of the communication. sydra-rtp has automatic client detection capabilities in the form of keep alive messages. These message are sent out by receivers to request RTP packets from a sender. The sender will send RTP packets to one or more receivers which request the stream. It also uses the keep alive messages to remove stale client 'connections'. A receiver can also request to be removed from the list of receivers. This ensures a fast and clean shutdown. The keepalive messages are also a simple way to work around NAT and firewalls (UDP hole punching). tba... Dependencies ============ Linux ----- core: build-essential libgstreamer1.0-dev pkg-config if you want to use clang as compiler clang if you want to rebuild the manpage: asciidoc Installation ============ Getting the source via GIT: --------------------------- git clone git://git.spreadspace.org/sydra.git cd sydra Building from source -------------------- # cd src # ./configure # make Installing ---------- # sudo make install This will install sydra under the --prefix defined with configure. Uninstalling ------------ # sudo make remove