4ch mpeg-2 KEY FEATURES Input: 4 CVBS video, 4 Stereo Audio (DB9 to RCA) Video Encoding: Video format: MPEG-2 (4:2:0) Image format: PAL, NTSC SD signal Input resolution: 720x480_60i, 544x480_60i, 352x480_60i, 352x240_60i, 320x240_60i, 176x240_60i, 76x120_60i, 720x576_50i, 704x576_50i, 640x576_50i, 352x288_50i, 320x288_50i, 176x288_50i, 176x144_50i GOP structure: IBBPB Video bitrate: 0.1Mbps~8Mbps per channel (for DX214) 0.5Mbps~8Mbps per channel (for DX214A) Support CC (closed caption) Audio Encoding: Audio format: MPEG-1 Layer 2, DD AC3 (2.0) Sampling rate: 48KHz Resolution: 24-bit Audio bitrate:128Kbps, 192kbps, 256kbps, 320kbps, 384kbps each channel