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录像机的最大解码/接入带宽（如80Mbps）决定能同时接入多少路高清IPC，8路4K满码流可能超出低端NVR带宽上限导致卡顿，需核对接入带宽而非仅看路数

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UnverifiedNVR选购首要看接入带宽而非路数标称，8路NVR若接入带宽仅40Mbps，实际接4路400万像素摄像头（单路6-8Mbps）就会跳帧，选购时确认接入带宽≥单路码率×路数×1.3余量83% similar UnverifiedNVR的接入带宽比路数更重要：接入带宽需≥所有摄像头码流总和。例如8路400万像素摄像头(单路8Mbps)需要≥64Mbps接入带宽，选择接入带宽标注80Mbps以上的机型才不会丢帧或卡顿83% similar Unverified支持路数越多则单路码流上限越低：16路NVR接入通道带宽有限，全部接400万高清摄像头会超出接入带宽导致部分通道无法录像83% similar UnverifiedNVR的解码能力上限决定实际可用画质，标称支持800万像素但总带宽有限时，8路全部接4K摄像头会导致预览卡顿，需查看'接入带宽'参数（如80Mbps）83% similar Unverified接入摄像头总码流不应超过NVR的接入带宽上限，8路NVR常见接入带宽为80Mbps，接8个400万像素摄像头(每路约8Mbps)已接近上限，若接更高像素会导致丢帧或无法录像82% similar

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