You can play back 1, 2, or 3 cameras fine, but adding one more triggers the block. This article explains why this happens, the architectural limits, and how to bypass or optimize it.
The specific reason for the error often depends on how you are accessing the footage: Cause Recommended Action Most entry-level NVRs have a limit (often 128 total links).
Reduce the slightly to match the new frame rate. Method 4: Enable Hardware Decoding on iVMS-4200
The issue reported here pertains to Hikvision DVR/NVR systems, specifically when users attempt to access multiple channels under playback simultaneously. The error message or issue encountered indicates that the maximum number of channels under playback has been reached. hikvision maximum number of channels under playback reached
This error occurs when you try to open .
Total concurrent playback streams (regardless of camera) exceed NVR's limit.
Use NET_DVR_GetLastError() – if it returns 23 (device busy) or 110 (resource limit), it’s a channel limit error. You can play back 1, 2, or 3
If the Hik-Connect app hangs while opening a camera, it may not properly release that camera, leading to a "ghost" connection that adds up over time. Step-by-Step Solutions 1. Stop Existing Playback/Live View (Immediate Fix)
If multiple users (e.g., via iVMS-4200, Hik-Connect) are viewing playback at the same time, they consume the total available playback channels.
If you have many 4K cameras, ensure your internet upload speed at the site of the NVR is sufficient. Reduce the slightly to match the new frame rate
In network-based surveillance systems (NVRs), the available network bandwidth can also affect the number of channels that can be played back simultaneously. High-resolution cameras require more bandwidth for smooth playback, affecting the maximum number of channels.
Several Hikvision firmware versions have been reported to cause playback limit errors that are resolved by updating to the latest version.
Higher resolution (e.g., 4K/8MP) consumes more decoding power, reducing the number of simultaneous playback channels.
If you share the device with family or colleagues, they may be viewing, which causes a conflict. Ask them to close their playback sessions. Long-Term Fixes Update Firmware: