Live Production Switcher - 4 Input, Composite, S-Video, MIDI, NTSC, Quad Monitor Output Channel Video Mixer featuring S-Video (Y/C) and Composite video inputs.  Features include Dissolve, Fade, Wipes, Splits, PIP and Colour Processor.  Channels are internally synced via a built in dual channel TBC 4:2:2 frame synchroniser. Component (YUV) via breakout cable, S-Video (Y/C) or Composite Video output.  displays all 4 input sources via a single quad output including a Tally Light indicator on each input meaning the user only needs 2 video monitors one for all inputs, one for output.  The input display will also automatically change to preview the next transition if selected. The unit can be manually operated or controlled via  RS-232 interface.