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ORIVISION All Video Encoders And Decoders Support SRT Protocols

Secure Reliable Transport (SRT) Protocol

The SRT protocol video encoders and video decoders fully meets the needs of customers to transmit high-standard-definition streams through public IP, which can greatly save the bandwidth cost of private networks.

Achieving secure, stable, and fast transmission, which is an open source, free, and flexible application specification. Now ORIVISION’s all live streaming encoder support SRT protocal.

ORIVISION Video Decoder DH931 DH941 H 265 hardware decoder is a professional 4K H.265 (HEVC) hardware decoder that brings multiple video streams to HDMI/CVBS/VGA.


How to Set SRT Protocol

SRT Protocol Configuration

Applications of the Secure Reliable Transport (SRT) Protocol

1. Point-to-point one-way transmission and video interaction

During the transmission of audio and video streams from the SRT source device (video encoder as shown below) to the SRT target device (video decoder as shown below), the secure reliable transport (SRT) protocol detects and adapts to the changing network state between the two devices in real time. Resist the bandwidth jitter caused by network congestion, and with its powerful error recovery mechanism, minimize the possibility of network packet loss. At the same time, the SRT can also perform AES encryption to ensure the information security of the data during transmission.

2. Point to multipoint transmission

By using the streaming media gateway, the video stream sent by one encoder can be distributed to multiple decoders, and the streaming media gateway is used as a central node. The video stream sent by the encoder is received first, and then copied and distributed to multiple decoders. Decoders for point-to-multipoint video transmission.

3. video streaming protocol conversion and distribution

With the media gateway device, it can realize the input and output of various video streaming protocols such as secure reliable transport (SRT) protocol, TS over UDP, RTMP PULL/PUSH, and copy, convert and distribute each video stream, which greatly increases the compatibility of the SRT system. Sexuality enables local TS over UDP and RTMP streams to be smoothly integrated into the SRT encoder system, improving the flexibility of video forwarding.

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Benefits and applications of secure reliable transport (SRT) protocol

Benefits of SRT protocol

High quality: SRT excels at delivering high-grade video streams regardless of network conditions. It can withstand up to 10% packet loss without any noticeable degradation in quality.

Reliable and low-latency: SRT prioritizes both reliability and speed. It maintains stream integrity by accounting for issues like packet loss, jitter (variations in packet arrival times), and fluctuating bandwidth. This allows for smooth, uninterrupted viewing experiences even on unreliable networks.

Secure: SRT offers end-to-end encryption with options for 128-bit or 256-bit AES encryption, protecting valuable content from unauthorized access during transmission.

Applications of SRT protocol

Live video streaming: SRT is a perfect choice for applications where low latency and reliability are crucial, such as live news broadcasts, sporting events, and remote conferencing.

Video contribution: SRT is used to securely and reliably transmit video feeds from remote locations to studios or broadcast centers.

Remote video monitoring: SRT is ideal for applications where real-time video monitoring is essential, such as security surveillance systems and traffic management.

OTT (Over-the-top) platforms: SRT can be used to deliver high-quality video content to viewers over the internet, bypassing traditional cable and satellite providers.

Overall, SRT is a versatile protocol that offers a powerful solution for reliable, secure, and low-latency video streaming across various applications.

SRT Compatible Devices and Services

SRT Compatible Devices

SRT is fairly device-agnostic. This means you can potentially use any device with the right software to send or receive SRT streams. Common examples include:

Computers (desktops, laptops)



Smart TVs

The key lies in having SRT compatible software installed.

SRT Compatible Services

There's a growing list of services that incorporate SRT. Here's a breakdown:

Streaming software: Popular options like VLC media player, FFmpeg, and OBS Studio all have built-in SRT support.

Encoders and decoders: Many professional encoders and decoders used in the broadcast and video production industry support SRT.

IP Cameras: A growing number of IP cameras offer SRT streaming capabilities.

CDNs (Content Delivery Networks): Some CDNs are starting to integrate SRT for reliable content delivery.

Secure Reliable Transport (SRT) Protocol FAQs

Who Uses the Secure Reliable Transport (SRT) Protoco?

The Secure Reliable Transport (SRT) protocol is used by a wide range of organizations across the globe, encompassing various industries:

Broadcast and media companies:  These entities leverage SRT for applications like live news broadcasts, sports streaming, and remote video contributions.  SRT's reliability and low latency are crucial for ensuring smooth, high-quality transmissions.

Video conferencing services:  SRT contributes to seamless video conferencing experiences by maintaining stream integrity over potentially unstable networks. This is particularly important for remote work and geographically dispersed teams.

Security and surveillance:  SRT's secure and reliable nature makes it ideal for real-time video monitoring in security systems and traffic management applications.

Content Delivery Networks (CDNs):  Some CDNs are integrating SRT to enhance content delivery reliability, especially for geographically distant viewers.

Technology giants:  Major companies like YouTube, Amazon Web Services (AWS), and Microsoft endorse and potentially utilize SRT for various video streaming applications.

Beyond these specific examples, thousands of organizations benefit from SRT. Here's a breakdown of compatible devices and software used for SRT transmission and receiving:

IP cameras: A growing number of IP cameras offer built-in SRT streaming capabilities.

Encoders and decoders: Professional tools used in video production and broadcasting often support SRT.

Streaming software: Popular options like VLC media player, FFmpeg, and OBS Studio can handle SRT streams.

Open-source frameworks: SRT is integrated into open-source multimedia frameworks like GStreamer, making it accessible for developers.

Is SRT better than RTMP?

SRT generally offers several advantages over RTMP (Real-Time Messaging Protocol) for video streaming, particularly when dealing with unreliable networks:

Reliability and Low Latency: SRT excels at maintaining stream integrity even with packet loss, jitter, and fluctuating bandwidth. This translates to smoother, uninterrupted viewing experiences compared to RTMP, which struggles under such conditions.

Security: SRT offers built-in encryption for secure content transmission. RTMP lacks this feature, making streams vulnerable to interception.

Network Adaptability: SRT is designed to adapt to changing network conditions, dynamically adjusting parameters to optimize video quality and maintain a stable connection. RTMP is less flexible and can struggle with significant network variations.

However, RTMP does have some advantages:

Simplicity: RTMP is a simpler protocol, making it easier to set up and use in some cases.

Wide Support: Many platforms and devices natively support RTMP, making it a familiar choice for basic streaming needs.

Choosing between SRT and RTMP depends on your specific needs:

If reliability, low latency, and security are paramount, SRT is the better choice. This is ideal for live broadcasts, remote video conferencing, and secure video transmission.

If simplicity and broad compatibility are your priorities, and network conditions are generally good, RTMP might suffice. This could be suitable for basic streaming to platforms that natively support RTMP.

How does an Secure Reliable Transport (SRT) Protoco work?

SRT (Secure Reliable Transport) protocol tackles the challenge of delivering high-quality, low-latency video streams over unpredictable networks like the internet. Here's a simplified breakdown of how it works:

Combining Strengths: SRT borrows the best aspects of two existing protocols:

UDP (User Datagram Protocol): Offers low latency, meaning data packets travel quickly with minimal delay. However, UDP doesn't guarantee delivery or check for errors.

TCP (Transmission Control Protocol): Provides reliable data transmission with error checking and retransmission, but it can introduce latency.

Reliable Delivery with Low Latency:  SRT builds upon UDP's speed while adding mechanisms for reliable delivery. It achieves this with a technique called Automatic Repeat reQuest (ARQ):

Packet Sequencing: Each data packet is numbered, allowing the receiver to identify and reorder them if they arrive out of order.

Error Detection and Correction: Data packets include checksums to detect errors during transmission. If errors are found, the receiver requests the missing or corrupted packets for retransmission.

Congestion Control: SRT monitors network conditions and adjusts data transmission rates to avoid overwhelming the network and causing further delays.

Secured Streams:  The "Secure" in SRT refers to its encryption capabilities. It offers options for 128-bit or 256-bit AES encryption, adding a layer of security to protect sensitive video content during transmission.

Flexibility and Adaptability:  SRT is content-agnostic. It can transport various video formats, codecs, resolutions, and frame rates, making it adaptable to different streaming needs.

Firewall Friendly: SRT is designed to work well with firewalls, a common challenge for video streaming. It uses specific ports and handshake mechanisms to ensure streams can traverse firewalls without disruption.

SRT essentially creates a reliable tunnel over an unreliable network, ensuring video streams reach their destination with minimal delay and high quality, even under challenging network conditions.

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