Unverified90% confidenceDecision RuleTime unknown
NVR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
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UnverifiedNVR的总接入带宽（如80Mbps）决定实际可承载的高清摄像头数量，8路4K摄像头每路约8-16Mbps，标称8路但带宽仅40Mbps的NVR无法同时满帧率录制8路4K94% similarUnverified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94% similarUnverifiedNVR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94% similarUnverifiedNVR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）92% similarUnverifiedNVR的解码能力比路数更关键：8路NVR若单路解码能力仅支持8MP@30fps，接入多个4K摄像头同时回看会卡顿或降帧，选购需确认总解码带宽（如80Mbps）而非仅看接入路数91% similar
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