4 / 8 CH DVR supports TVI / AHD/CVI 5MP/4MP/1080P/720P/WD1 video input 4 / 8CH DVR supports 2 / 4 CH 5MP / 4MP / 3MP /1080P / 960P /720P IP video input by default 4CH DVR: 4CH analog video input can be switched to 4CH IP video input 8CH DVR: 8CH analog video input can be switched to 8CH IP video input Adopt standard H.265 high profile compression format to get high-quality video at much lower bit rate Intuitive and user-friendly Graphics User Interface ( GUI ), window style operation by mouse Multi-mode recording: manual / timed / sensor / motion / AI recording Playback : 4 / 8 CH simultaneously playback Search: time slice, time, event, tag search Express and flexible backup via USB, network and so on Pentaplex: preview, record, playback, backup and remote access DHCP, DDNS, PPPoE network protocol Remote control via Web or CMS : preview, playback, backup, PTZ and configuration Authorization management, log review and device status review Support 1080P output, true high resolution display Support PTZ preset and auto cruise, up to 255 presets and 8 cruises Support NAT function and QRCode scanning by mobile phones Powerful mobile surveillance by smart phones with iOS and Andriod OS