Open Mash

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Consortium that supports the Mash streaming media toolkit and distributed collaboration applications based on the Internet Mbone tools and protocols.

Mash is an open-source project, toolkit for multimedia communication and collaboration over the Internet using IP multicast. Mash supports live media broadcasting, N-way conferencing, and session capture and replay. Mash is an outgrowth of the Internet MBone tools developed to support streaming audio and video applications. MASH is a "Multimedia Architecture that Scales across Heterogeneous environments".

Mash is coded in both C/C++ (media encoders and decoders) and Tcl/Tk.