HER503-4 4-ch H.264/MPEG4/MPEG2/MJPEG Video Encoder H.264/MPEG4/MPEG2/MJPEG encoding standards supported Support encoding video at up to 4CIF resolution One independent PoE network interfaces Connectable with network HDD in NAS, IPSAN mode Support multiple network protocols, including IPv4/v6, HTTP, HTTPS, QoS layer3 DiffServ, FTP, SMTP, Bonjour, UPnP, SNMPv1/v2c/v3, OnVIF, PSIA, SOCKSv4/v5, etc.; Multiple PTZ protocols