coralbay.tv announced it will demonstrate its new coralCaption product, which inserts AI-generated or user-entered captions into live transport streams without decoding, and updated coralPlay playout features including an efficient IP live input switching framework at NAB 2024.
The schedule-aware live input switching in coralPlay tackles a real inefficiency in IP playout: decoding every incoming source simultaneously wastes compute resources. By decoding only scheduled sources in advance, coralbay.tv directly reduces cloud compute costs for multi-channel operators. coralCaption enters a market where multiple vendors launched AI captioning products at the same show, making its no-decode insertion approach a potential differentiator for broadcasters concerned about latency in live transport streams. Watch whether coralbay.tv's microservices architecture — deployable in any cloud or on-premises — attracts broadcasters migrating from hardware-based captioning and playout systems.
coralbay.tv developed coralCaption in direct collaboration with Red Bee Media, one of the largest broadcast services providers in Europe. The partnership was announced on March 20, 2024, with Red Bee Media's Head of Access Services Tom Wootton describing coralCaption as a scalable and fully virtualised caption encoding solution designed for streaming and end-to-end cloud workflows. The initial release supports Teletext and OP47 subtitles, with 608/708 captioning and DVB bitmap support planned for subsequent versions, positioning the product for both European and North American broadcast markets.
The schedule-aware live input framework that coralbay.tv demonstrated at NAB 2024 had been released to customers in January 2024, several months before the show. The company described the framework as solving the fundamental cost problem of IP playout, where decoding all incoming sources simultaneously requires excessive compute resources. The framework also introduced degradable inputs, allowing operators to define a primary source and up to two automatic backups that switch in sequence if the primary signal fails or degrades.
coralbay.tv continued to showcase these capabilities beyond NAB, bringing both coralCaption and the enhanced live input framework to IBC 2024 in Amsterdam. At IBC, the company demonstrated that the live input handler supports transport streams over Zixi, SRT, RTP, and UDP protocols as well as NDI and SDI inputs, with automatic failover to a preconfigured graphic if all sources fail. This multi-protocol support and layered redundancy model distinguish coralbay.tv's approach from traditional hardware-based playout systems that rely on dedicated SDI routing for live source switching.
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