Key features self-adaptive hdtv connectable to 264 ip cameras up to 4mp lite resolution hdmi output at up to 4k long distance transmission 4/8/16-ch synchronous playback video/audio input audio input: 1-ch video compression: h.265 pro /h.265 pro/h.265/h.264 /h.264 analog and hd-tvi video input: 16-ch,bnc interface (1.0vp-p, 75 ω)connection supported camera types: support hdtvi input: 4 mp, 3 mp, 1080p30, 1080p25, 720p60, 720p50, 720p30, 720p25 note: the 3 mp signal input is only available for channel 1 of ds-7204hqhi-k1, for channel 1/2of ds-7208hqhi-k1, and for channel 1/2/3/4 of ds-7216hqhi-k1. Support ahd input: 4 mp, 1080p25, 1080p30, 720p25, 720p30 support cvi input: 1080p/25hz, 1080p/30hz, 720p/25hz, 720p/30hz support cvbs input video input interface: bnc (1.0 vp-p, 75ω) audio