WISI, a member of the SRT alliance, has integrated the SRT protocol into the WISI Intelligent Headend Product family - Inca, Tangram or Chameleon. Video operators can now send or receive SRT streams using WISI products to lower latency and increase reliability.

What is SRT

SRT (Secure Reliable Transport) is a video transport protocol used to deliver high-quality, low-latency video across unpredictable networks.

Secure – Protects video streams using industry-standard encryption AES 128/256 

Reliable – Recovers from severe packet loss 

Transport – Dynamically adapts to changing network conditions 



  • optimizes streaming performance across noisy or unpredictable networks while addressing security concerns and focusing on high performance video.

  • is designed to protect against jitter, packet loss and bandwidth fluctuations to help ensure the best viewing experience. This new transport protocol uses advanced low-latency retransmission techniques to protect streams against packet loss.

  • As video and audio packets are streamed between two endpoints, it detects and adapts to the real-time network conditions between the source and destination devices. SRT also supports end-to-end AES encryption to ensure streams are protected from contribution to distribution.

How does it work ? 

  • SRT ensures easy firewall traversal by using a caller/listener handshake concept. The handshaking process used by SRT respects existing security policies by allowing outbound connections without requiring, permanent exterior ports to be opened in a firewall.

  • Chameleon, Tangram and Inca support all SRT transmission modes: caller, listener, or rendezvous.

REASON why choosing SRT

Send streams securely and reliably over the internet to remote headend sites or hospitality networks

Replace expensive satellite distribution deployments to reduce costs

Replace RTP+FEC and improve overhead bandwidth usage

Leverage the internet and deliver high-quality video securely to different cities, countries and even continents

Why Choose WISI for Your SRT Project?


Option to transcode between MPEG-2, MPEG-4 and HEVC at contribution or distribution endpoint


Small footprint with power-efficient, modular solutions in 1RU


Reliable 24/7 operation thanks to quality engineering and strong North American technical support


Encryption and decryption options using Verimatrix, BISS, Pro:Idiom or Samsung LYNK


Powerful management and monitoring tools


Receive SRT streams and output as IP, QAM, Analog, ASI or SDI


Rapid configuration and deployment with an intuitive, web-based UI

Launch SRT with WISI

Use Inca for high-density video delivery between remote sites

Optionally transcode to optimize codec, bitrate or resolution of HD and SD streams

Receive full-line up at remote site for IPTV delivery

Use Tangram for high-density hospitality or edge applications

Receive SRT and output as QAM or Analog

Option to encrypt using BISS, Pro:Idiom or Samsung LYNK

Use Chameleon for lower density projects

Connect directly with broadcast sites and transport content using SRT

Receive SRT and output as QAM, Analog, ASI or SDI

Contact Us


Mantenna Wisi Engineering Co.,Ltd (A wholly owned subsidary of Wihelm Sihn jr. GmbH & Co. KG., Germany)

Address. K.K Industrial Building, Block C, 1st Floor, 5 Mok Cheong Street,Tokwawan, Kowloon Hong Kong


地址. 香港九龍土瓜灣木廠街五號金賜工業大廈二樓C座

Tel/電話 : (852) 23624315
Fax/ 傳真 : (852) 27642745

Email/電郵. sale@wisi.hk 

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