Support MPEG 4 xvid sample profile codec. Encode bit-rate: 64k-2Mbps.Frame rate: 1-30 f/s selectable.Support CIF format MPEG4 Encoder.Software audio codec: G.723.1.Offer MPEG4 xivd compression engine, enable to compress multi-channel video simultaneously.Support superimposition of both time (year/month/day/hour/min. /sec., text) and LOGO messages in video.Support uncompressed AVI image capture.Support still image capture.Built-in 8-channel alarm input and output can connect with various kinds of enunciators.