Live Event Latency: IP Workflows Introduce Complexity, Require Network Expertise
Industry experts discuss the critical challenges and best practices for managing latency, synchronization, and redundancy in live events and production, emphasizing the move towards IP workflows such as SMPTE 2110 and NDI. The article highlights the complexities and benefits of these technologies, especially in temporary versus fixed installations. It also touches on the differing tolerances for latency and sync issues between the broadcast and pro-AV worlds.
Key Takeaways
- Experts state 'zero latency' is a misnomer; manufacturers typically refer only to internal core processing, omitting physical interface overhead, buffer latency, and advanced image processing cycles.
- Synchronizing sources at image generation (e.g., genlocking cameras or using PTP for decoder alignment) is crucial to minimize sync issues in live productions.
- IP workflows (SMPTE 2110, NDI) offer scalability and centralized delay compensation but require robust network configuration (QoS, IGMP protocols) to prevent jitter and unpredictable latency.
- SMPTE 2110 prioritizes strict precision with mandated PTP and FPGA-driven devices, while NDI emphasizes flexibility with inherent compression and reliance on software processing, making network design critical.
- Redundancy for live events, especially high-profile ones, often involves multiple layers (primary, backup, emergency bypass), with practicality determined by budget and the risk of human error from over-complication.
Why It Matters
The shift towards IP-based workflows in live production introduces both flexibility and complexity for streaming. While standards like SMPTE 2110 and NDI enable greater scalability and resource sharing, they necessitate a deeper understanding of network architecture and timing protocols. This knowledge gap between traditional AV and IP/IT systems is a significant roadblock, especially for temporary live events lacking fixed infrastructure. Companies should prioritize investment in network expertise and system design to fully realize the benefits of IP without compromising critical live event reliability.
Read full article at inavateonthenet.net
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