Hikvision DS-B31-04H08H 4-Channel HDMI Input+8-Channel HDMI Output

• Adopts the 3 U standard rackmount chassis and ATCA chassis system for small to medium-sized surveillance.
• Adopts the plug-in modular design to provide flexible choice of model according to needs.
• Supports auto temperature adjustment of the intelligent fan to ensure system stability and reliability.
• Supports HDMI signal input and output.
• Supports the default H.265 encoding and H.264 encoding.
• Supports H.265, H.264, MJPEG and other mainstream encoding formats.
• Supports 4 channels of HD video encoding.
• Supports 64 channels of HD video decoding.
• Supports the maximum LED loading capacity of 2.6 MP per port.
• Supports 32 MP HD video decoding.
• Supports any splicing of 8 screens according to needs.
• Supports the division of 1, 4, 6, 8, 9, 16, and 25 per output port window.
• Supports opening a maximum of 64 windows on the video walls, opening a maximum of four 1080p layers or two 4K layers on a single screen, and floating windows.
• Supports live view of video wall.
• Supports up to 128 scenes. You can customize the video wall layout and save it as a scene.
• Supports up to 8 subtitles for the video wall controller and up to 3 subtitles for one video wall.
• Supports the access and operation via the mobile client (Android or iOS), PC client, and web client.
• Support using the ONVIF protocol to access devices for decoding.

Datasheet

Specifications

Chassis

• Chassis Height: 3 U
• Bus Type: Gigabit network switching
• Main Control Board Slot: 1
• Installed Main Control Boards: 1
• Power Supply Slot: 2
• Installed Power Supplies: 1
• Service Board Slot: 6
• Installed Service Boards: 0
• Fan: 14 (2 fan boards, 7 fans per fan board)

Interface

• USB Interface: 2 × USB 2.0
• Serial Interface: 1 × Console port (RJ-45) + 1 × reserved port for debugging + 2 × RS-485/RS-232 multiplex ports (RJ-45)

Power

• Power Interface: 100 to 240 VAC, 50/60 Hz
• Device Consumption: ≤ 120 W

Network

• Network Interface: 2 × 10/100/1000 Mbps self-adaptive Ethernet interface (RJ-45)

Video Wall

• Video Walls: 8
• Video Wall Scale: ≤ 8
• Open Windows: 128
• Window Division per Output Port: 1/4/6/8/9/16/25
• Input Source Copy Capability: Supported
• Layers Per Port: 4 × 1080p or 2 × 4K
• Layers per Device: 32
• Scenes: 128
• Signal Source Live View: Supported
• Scene Auto-Switch Delay: 3 s
• Preview Channels: 2
• Live View Resolution: CIF(352 × 288)/QCIF(176 × 144)/HCIF(704 × 288)/DCIF(528 × 384)/FCIF(704 × 576)
• Background Image: ≤ 8, single background image resolution: 1280 × 720 to 7680 × 4320, background image format: JGP/JPEG.
• Subtitles: ≤ 8 subtitles on the video walls; ≤ 3 subtitles on a single video wall
• Input Image Clipping: Supported, 200 pixels on the left, right, top and bottom edges.
• Delay of Displaying Local Signal Source on Video Wall: 120 ms

General

• Working Temperature: 0 °C to 50 °C
• Working Humidity: 10% to 90%
• Net Weight: ≤ 6.7 kg (14.77 lb.)
• Gross Weight: ≤ 14 kg (30.86 lb.)
• Dimensions (W × H × D): 442.4 mm × 128 mm × 341.6 mm (17.42 inch × 5.04 inch × 13.45 inch)
• Packing List: 1 × serial port cable, 1 × AC power cord, 1 × grounding cable, 1 × M4 screw, 1 × HDMI bracket, several HDMI snap fittings, 1 × regulatory compliance and safety information manual

Audio Input

• Audio Input Interfaces4
• Audio Input Interface TypeHDMI embedded

Video Input

Video Input Resolution

1024 × 768@60 Hz, 1280 × 1024@60 Hz, 1366 × 768@60 Hz, 1440 × 900@60 Hz, 1680 × 1050@60 Hz, 1280 × 960@60 Hz, 1600 × 1200@60 Hz, 1280 × 720p@50 Hz, 1280 × 720p@60 Hz, 1920 × 1080p@50 Hz, 1920 × 1080p@60 Hz, 1920 × 1200@60 Hz, 3840 × 2160@30 Hz (only odd-numbered ports)

Supports custom resolution.

Width: 800 to 1920, pixel alignment: must be a multiple of 4

Height: 600 to 1200, pixel alignment: must be a multiple of 2

Resolution: 0.48 MP to 2.3 MP

• Video Input Interface Type: HDMI 1.4
• Max. Video Input Resolution: 4K (Only odd-numbered ports)
• Video Input Interfaces: 4

Video Encoding

• Video Encoding Channels: 4
• Video Encoding Format: H.265 (default), H.264
• Video Encoding Capability: 4 channels of 1080p 60 fps or 2 channels of 4K30

Audio Encoding

Audio Encoding Format: G722.1,G711_U,G711_A,AAC

Video Output

• Video Output Interface Type: HDMI 1.4
• Video Output Interfaces: 8
• Max. Video Output Resolution: 4K
• Video Output Resolution: XGA_60 Hz(1024 × 768@60 Hz)/SXGA_60 Hz(1280 × 1024@60 Hz)/ 720P_60 Hz(1280 × 720@60 Hz)/UXGA_60 Hz(1600 × 1200@60 Hz)/ WSXGA_60 Hz(1680 × 1050@60 Hz)/WUXGA_60 Hz(1920 × 1200@60 Hz)/ 1080P_60 Hz(1920 × 1080@60 Hz)/4K_30 Hz(3840 × 2160@30 Hz)
• Loading Capacity for Video Output to LED;

Single port load 2600000,

Width 288 - 3840,

Height 288 - 2160,

Width must be a multiple of 2 and height must be a multiple of 2

Video Decoding

• Video Decoding Format: H.264, H.265, Smart264, Smart265, MJPEG
• Video Decoding Channels: 128
• Video Decoding Capability;

• H.264/H.265/Smart264/Smart265 format: 4 channels of 32 MP/24 MP, 8 channels of 16 MP, 10 channels of 12 MP, 16 channels of 8 MP, 20 channels of 6 MP, 32 channels of 4 MP, 64 channels of 1080p, or 128 channels of 720p/D1 or lower resolution (One group of 4 outputs shares decoding capability)

  MJPEG format: 8 channels of 2 MP

Audio Output

• Audio Output Interfaces: 8
• Audio Output Interface: HDMI embedded

Audio Decoding

• Audio Decoding Format: G711-A, G711-U, G722.1, G726-16/U/A, MPG, AAC-LC

Device Parameters

• Device Decoding Capability: 64 channels of 1080p 30 fps
• Device Encoding Capability: 4 channels of 1080p 60 fps
• Device Splicing Capability: 8 channels