Up to 4/8/16 channel HD-SDI video 1080p realtime live view ... embedded processorOperating SystemEmbedded LINUXVideoInput4 channel, BNC8 channel, BNC16 channel, BNCStandard1080P(25/30) / 720P(25/30,50/60)AudioInput4 channel, BNC8 channel, BNC16 channel, BNCOutput1 channel, BNCTwo-way Talk1 channel ... 264 / G.711Record Resolution1080P(1920×1080), 720P(1280×720), D1(704×576 / 704×480), CIF(352×288 / 352× ...