FCC Solution: The 200ms Magic, Redefining Channel Switching
- Pearl Jinjoo Hwang

- Oct 10
- 1 min read
Usual brief delay TV-audience feels when changing IPTV channels? It's virtually gone. CASTIS's FCC (Fast Channel Change) solution reduces channel switching time to approximately 200ms, delivering an instant viewing experience comparable to live broadcasting.

Why FCC Matters
Traditional digitalized TV channel service with multicast has inherent delays of several seconds due to the structural limitation of waiting for the next keyframe in the multicast stream. This has been a major pain point degrading user experience. CASTIS FCC solution fundamentally solves this problem.

Core Technology: Smart Stream Switching
The FCC system's operation is elegantly simple yet intelligent. When a user requests a channel change, the system immediately transmits GOP-based streams cached in memory via unicast. Simultaneously, the STB begins receiving the multicast stream and automatically switches to multicast-only mode after 1-2 seconds. Throughout this process, users experience virtually no delay. As a software-based solution, it seamlessly integrates with existing systems.
Main Features
Ultra-Fast Channel Change By caching GOP-based streams in FCC system memory, we've achieved zero-delay channel switching. The system delivers immediately decodable streams containing IDR frames.
Smart Traffic Management Intelligent algorithms balance TPS and per-channel bandwidth to prevent system overload. The solution supports various media types including H.264/HEVC and RTP/RTSP protocols.
High Availability with Zero Downtime Our fault-tolerant architecture ensures uninterrupted service even during system failures. Smart load-balancing via round-robin method and system redundancy guarantee stability.
Real-time Monitoring Provides visibility into service and system status through real-time monitoring.
CASTIS FCC solution goes beyond mere speed—it delivers a consistent and predictable channel switching experience. This is a game-changer that elevates channel service quality to the next level.
For more information, contact APAC sales. sales@castis.asia


