# Product introduction LinkPi encoding system is a opensource product independently developed by Guangzhou Lingpai Technology Co., Ltd. This series of products have the advantages of low power consumption and high reliability, and support 7x24 hours of uninterrupted work. It can be widely used in network live broadcast, IPTV system, wireless image transmission, teaching recording and broadcasting, video conference, monitoring and other fields. In addition to the basic encoding and streaming functions of traditional encoders, the system also supports special effects editing, directing, network decoding, file recording, and video carousel. And, relying on the increasingly powerful LinkSDK system, the function of the product continues to grow. ### Software Specifications
ClassificationFunctionDescribe
AudioSampling Rate16k, 32k, 44.1k, 48k
BitrateArbitrary settings, recommended 64k~256kbps
Encoding formatAAC, PCMA, MP3, MP2
Gain adjustment-24db ~ +24db default to 0: no gain adjustment
VideoBitrateReference model comparison table
Rate controlCBR , VBR , AVBR , FIXQP
Encoding formatH.264, H.265, jpeg
Encoding protocolH.265 Main Profile, Level 5.0 H.264 Baseline/Main/High Profile, Level 5.1
Smart CodingSmartP，DualP，ROI
Video processingRotateSupport 90, 180, 270 degree rotation
CropSupport up, down, left and right cropping
DeinterlacingSupport normal deinterlacing, full frame rate deinterlacing
Network protocolGeneral agreementHTTP, HLS, RTSP, RTMP push, RTMP pull, UDP, multicast
SRTsupport (except TinyEnc1)
NDIsupport (except TinyEnc1)
Other functionsVideo mixingSupports arbitrary switching of layouts such as 9-grid, 4-screen, 1+2, picture-in-picture, and custom
OverlayLogo, Watermark, Subtitle, Rolling Caption, Mosaic, Timestamp
Multi-platform live broadcastSupport any multiple platforms to synchronize live streaming
File carouselStream files from a FAT32 formatted USB flash drive to live streaming
File recordingSupport recording each channel to FAT32 format U disk
Network inputSupports network stream input decoding, re-encoding, directing, etc. in rtsp, rtmp and other formats
Group managementAll encoders in the LAN can be configured synchronously, and the program list can be summarized
Intercom & Tallysupport, need to purchase additional accessories
### Product model comparison table
TinyEnc1ENC1/ENC1V2ENCSHENC2ENC4ENC5ENC9
HDMI In1x1080P1x1080P1x4K302x4K304x4K305x4K309x1080P
HDMI Out✖️1x1080P1x4K301x4K301x4K30 + 1x1080P1x4K301x4K30
SDI In✖️✖️1x1080P✖️✖️✖️✖️
SDI Out✖️✖️1xLoop✖️✖️✖️✖️
Line In111(Scalable)1(Scalable)✖️
Line Out✖️11(Scalable)1(Scalable)✖️
Encoding capability1080P30 + 360P301080P30x2 + 360P30x24K30 or 1080P30x44K30x2 or 1080P30x84K30x2 or 1080P30x84K30x3 or 1080P30x81080P30x10
Max bitrate
(each stream)		20Mbps40Mbps40Mbps40Mbps20Mbps40Mbps40Mbps
Decoding capability✖️1080P30x21080P30x41080P30x81080P30x81080P30x81080P30x8
Deinterlacing✖️✔️✔️​​✔️✔️✔️✔️
USB✖️2.02.03.03.03.03.0
Power supply5V1A12V1A12V2A12V2A12V5A5A5A
Size58×62×16100×67×32
V2: 132×140×30		170×110×30132×140×30445x255x40250x130x30445x255x45
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