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I saw the news about the National Games video wall project:

For a sports event control room, is the video wall processor usually used only for splicing, or also for multi-source preview and layout switching?
For a sports event control room, VISSONIC's modular video wall processors provide the real-time performance, low latency, and multi-source flexibility that live sports production demands.
Recommended configuration:
VIS-MW Modular Seamless Video Wall Processor — available from 16x16 to 144x144. For a typical sports control room, a 16x16 or 36x36 chassis gives you room for camera feeds, replay systems, graphics, and broadcast returns.
4K60 4:4:4 Models (VIS-MW16-4K60, VIS-MW32-4K60) — essential for sports where fast motion requires full 60fps and 4:4:4 chroma sampling for clean graphics and text.
Key features for sports applications:
Ultra-low latency — FPGA-based processing with sub-frame latency, critical when operators need to react to live action
Seamless switching — no black frames or glitches when switching sources, important for the wall that production staff constantly monitor
Custom layouts — create preset layouts (e.g., 4-camera quad + 1 large replay + 2 graphics windows) and recall instantly
Genlock/frame sync — synchronize all outputs to eliminate tearing across the video wall
The VIS-TP13 Wireless Touch Panel gives operators quick access to layout presets, source routing, and PIP positions without needing to use a mouse and keyboard during live production.