The Snack sound extension adds commands for sound play/record and sound visualization, e.g. waveforms and spectrograms. It supports in- memory sound objects, file based audio, streaming audio, WAV, AU, AIFF, and MP3 file formats, synchronous and asynchronous playback. The visualization canvas item types update in real-time and can output postscript. New commands and file formats can be added using the Snack C-API.
DVTS (Digital Video Transport System) sends and receives DV data using the Internet. It consists of dvsend and dvrecv - dvsend receives DV data via IEEE1394, and sends it to dvrecv using IP, while dvrecv receives DV/RTP packets, and sends DV data using an IEEE1394 interface. Using DVTS, high quality realtime video meeting can be achieved. It consumes about 8-35 Mbps of network bandwidth. Supported platforms are FreeBSD4.x, MacOSX, and Linux.