RIST Forum Launches Library For Interoperability Testing

The Reliable Internet Stream Transport (RIST) Forum has introduced RIST-compatible Virtual Machine (VM) images for testing interoperability of its low latency streaming protocol on products and workflows.

The images feature libRIST, a free, open-source library against which developers can test their own implementations for interoperability with the RIST protocol. The library will also help them become familiar with the new standard.

The VM's operating system was developed by SipRadius of Coral Springs, Florida and performs IP routing under Linux with support for real time processes. In addition to libRIST, it provides a streaming engine and web GUI, which in turn supports one media stream and two libRIST streams. The image comprises an installer for VMs under AWS, Azure and other virtual machine platforms.

Ciro Noronha, President, RIST Forum commented, "As the cable content platform shrinks and the internet content platform grows, we have seen a vast increase in the importance of media streaming over the public internet. Alongside its growing importance, we have seen the number of proprietary transport protocols increase. RIST is designed to be an interoperable standard, enabling users to transport broadcast-grade low-latency video over any type of infrastructure without losses and without being locked to a single vendor. The VM testing tool is hugely valuable in promoting easy implementation of RIST, and therefore improving interoperability within the industry."

What Noronha did not say was that the original launch of RIST added confusion to the market because the SRT (Secure Reliable Transport) protocol, based on quite similar mechanisms reducing delays associated with packet retransmission for error correction, was already gaining traction. The RIST Forum argued that SRT was too hitched to the vendor that created it, Haivision, even though SRT was also made available open source.

However, Haivision itself subsequently joined the RIST Forum and most recently there have been strong rumours the two groups will merge to end the confusion.

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