Satellite-Hybrid Innovation Advances with Released Band Method Specification within the RIST Framework
New RIST Satellite-Hybrid Method Enhances Satellite Video Distribution
The Video Services Forum (VSF) has unveiled a groundbreaking feature for its Reliable Internet Streaming Transport (RIST) Protocol - the RIST Satellite-Hybrid: In Band Method. This innovative solution is designed to recover lost or corrupted data during satellite distribution, using the RIST protocol in conjunction with satellite transmissions.
The RIST Satellite-Hybrid: In Band Method integrates RIST's reliable transport mechanisms with traditional satellite delivery streams. It operates by embedding recovery data packets within the same satellite broadcast stream (in band), rather than requiring a separate out-of-band channel. This approach enables broadcasters to detect and recover lost IP packets in real time without interrupting the satellite feed.
The method leverages RIST's ARQ (Automatic Repeat reQuest) protocol to request retransmissions over an Internet backchannel. This hybrid approach combines satellite broadcast and Internet IP transport, offering improved data integrity, cost-effectiveness, simplicity, flexibility, low latency, and high reliability.
The VSF specification ensures standardized interoperability across vendors and platforms supporting RIST and satellite distribution. The new feature is backward-compatible with legacy technology, making it an easy addition to existing VSF-compliant workflows.
Rick Ackermans, chair of the video services forum - RIST activity group, commented on the new RIST Satellite-Hybrid: In Band Method, stating, "This innovative solution addresses the problem of data loss due to rain fade in the Ku-band, which broadcasters may be forced to use due to US legislation."
The RIST protocol, an open, interoperable, and robust solution for low latency video contribution, delivers reliable transport over unmanaged networks such as the internet. The RIST Satellite-Hybrid: In Band Method builds upon this foundation, offering a solution for broadcasters facing data loss issues in the Ku-band due to US legislation.
To implement the RIST Satellite-Hybrid: In Band Method, a small metadata stream is inserted into the transmission before it is uplinked to the satellite. Recovered data is retransmitted over the internet to the locations that need it, creating a mechanism to use a satellite as the primary distribution channel with RIST as backup, recovering data lost or corrupted between the satellite and receiver.
Technical recommendations for the RIST protocol can be found on the VSF website, along with the full details of the RIST Satellite-Hybrid: In Band Method in TR-06-4 Part 7. The RIST Satellite-Hybrid: In Band Method does not repeat earlier bullet points, offering a unique solution for broadcasters using the Ku-band, which is highly susceptible to rain fade.
[1] Video Services Forum (VSF) - RIST Satellite-Hybrid: In Band Method [2] Video Services Forum (VSF) - TR-06-4 Part 7: RIST Satellite-Hybrid: In Band Method [3] Video Services Forum (VSF) - RIST Protocol
- The RIST Satellite-Hybrid: In Band Method, developed by the Video Services Forum (VSF), utilizes technology such as RIST Protocol to improve satellite video distribution, addressing data loss issues in the Ku-band.
- By integrating technology like the RIST Protocol, the RIST Satellite-Hybrid: In Band Method by the Video Services Forum (VSF) allows broadcasters to recover lost or corrupted data during satellite distribution, enhancing overall data integrity and reliability.
