... PAL, 352x240 @ NTSC)QCIF (176x144 @ PAL, 160x112 @ NTSC)Bit Rate16K ~ 4M bpsImage Frame Rate25fps at full D4(720P) resolution (PAL)30fps ... full D D4(720P) resolution (NTSC)Video InputComposite InputCVBS, 1.0Vp-p with 75Ω loadingBT656 optionalAudio I/OCompressionG.726Audio ... InputMIC In or Line Input Unbalanced, 1.4Vp-p, 1VrmsAudio outputUnbalanced, 1.4Vp-p, 1VrmsAlarm I/OAlarm input1 External ...