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Link Pi ENC9 Evaluation board Hisilicon Hi3531DV100 HDMI /Encoder Decoder HD smartP AVBR/RTMP/ONVIF/HLS/ Live Broadcast YouTube

Product features Ultra-clear input, high performance, high cobfiguration, customizable, expandable 4K-HDMIx11080P-HDMIx8 12x1080P or 3x4K simultaneous real-time encoding and decoding 3GB DDR3256MB Nand Flash open source system supports secondary developme
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Product features Ultra-clear input, high performance, high configuration, customizable, expandable 4K-HDMIx11080P-HDMIx8 12x1080P or 3×4K simultaneous real-time encoding and decoding 2GB DDR3256MB Nand Flash open source system supports secondary development, expandable touch screen, audio board, battery pack, etc. interface layout performance Parameters core performance Main chip: Hi3531DV100 CPU: ARM Cortex A9 dual-core @1.4GHz Memory: 2GB DDR3 Fl


Product Features



Ultra-clear input high performance High profile customizable Scalable
12x1080P or 3×4K
simultaneous real-time encoding and decoding
256MB Nand Flash
Open source system
supports secondary development
Expandable touch screen,
audio board, battery pack, etc.

Interface layout


Performance parameter

Core performance

main chip: Hi3531DV100
CPU: ARM Cortex A9 dual core @1.4GHz
Flash: 256MB Nand Flash

input interface

  HDMIx9 supports up to 4K@30 with audio

Output Interface

- Front HDMIx1 supports 4K
- Built-in VGA pin x1 supports 1080P

Codec performance

- 12x1080P@30+8xD1@30 h264/h265 encoding
- 3x4K@30+ 2x1080P@30 h264/h265 encoding
- 12x1080P@30 or 3x4K@30 h264/h265 decoding
- 4x1080P@30 mjpeg encoding/decoding
- Support H264+ (intelligent multi-reference frame, AVBR)
- Maximum bit rate 40Mbps


The internet: Gigabit wired network
storage: SATAx1
Audio: Audio board dedicated expansion interface
other: USB3.0x1, button x2
power supply: DC12V, typical power consumption 15W, maximum power consumption 30W, it is recommended to use 12V5A
Audio board: Optional, mutually exclusive with HDMI audio

Software function

basic skills: WEB configuration, hot parameter update, firmware upgrade, network setting, password management
Special effects overlay: Logo, watermark, subtitle, rolling caption, mosaic, time stamp
Video mixing: Picture-in-picture, 4 pictures, 9 pictures, etc., support real-time switching, support mixing
Resource management: Custom font, upload watermark Logo image


Board Size



Note: The PCB location map is included in the development data, please refer to the actual measurement.

Example tutorial

    We have carefully produced a wealth of sample tutorials, covering audio and video input and output, audio and video codec, screenshots, streaming, recording, video mixing, special effects overlay, USB camera, GPIO operation, power management, touch screen operation, OLED screen control, etc. Links to help you remove all the problems that may be encountered in the product development process. We will continue to update sample projects and tutorials.





    In order to facilitate users to develop products in the field of machine vision and AI, we have developed the LinkSVP framework to simplify the upstream and downstream development process and allow developers to focus on core algorithms. At the same time, several sample programs have been made to help users easily get started. Even in the scheme with NNIE unit, we provide tools for the acceleration of embedded optimization and can also run deep learning algorithms.




Development environment

    We have cross-compiled common third-party libraries and placed them in the virtual machine to facilitate user development and use.

  • Development framework: QT5
  • Media related: ffmpeg, fdkaac, lame, alsa
  • WEB development: php, nginx (nginx-rtmp+http-flv)
  • Network related: iperf, ppp, wpa, hostap, iw, libnl, ssl
  • Graphics processing: Opencv, NCNN
  • Others: freetype, icu, libts, zlib, libxml...
  • Open source software

    In order to demonstrate the basic capabilities of the evaluation board so that users can fully evaluate the solution before starting to develop it, we have produced an "encoder system" that demonstrates all the interface capabilities and codec performance of the solution in the form of a universal encoder. The product is completely open source, including main program source code, file system, webpage source code, etc.
    If the user's target product is similar to the open source product, it can be modified directly on the basis of the product source code.




Development model







1. If the payment is not available, your order will be closed automatically. ​2. Seller are responsible for any insurance, problems and damage which caused by shipping service such accidents, delays or other issues.Besides the buyer should to be responsible for any tax and/or dutycharged by their country.

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1. All item will be shippedwithin 48 hours on receipt of cleared payment.(The earlier you pay, the earlier we ship your order.) ​2. If you need faster shipment, please choose DHL or EMS or FedEx IP(Shipping fare paid by yourself). Or we will deliver via the default method. ​3. Please make sure that your shipping address is 100% correct ​4. We ship items to worldwide with delivery time guarantee

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1.Refund or resendnew for any orders due to the product quality problem. ​2.We accept any unused itemin its original package as return within 7 days of delivery. Buyers must provide the tracking number, specific reason forthe return. ​3. if it's buyer' s reason lead to the return package, buyers need to pay for round shipping fare. ​4. We will refund to buyer after we receive the returns in its original condition package. Or buyers could choose to have a replacement.


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