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Vivotek ND4801 user manual Prerequisites for Instant Replay

Models: ND4801

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The queue length configuration stays with the view cell, and it will not go unless you remove and insert the camera again.

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Prerequisites for Instant Replay:

1.The function is enabled by default, only available on a LiveClient installed on a PC.

2.There must be recorded videos of the immediate past. If the video streams from a camera were not recorded, you can not retrieve videos using the Instant Replay function.

NOTE:

1.When using the Instant Replay function and you change the stream number on a video cell, the Instant Replay will be interrupted.

2.The Instant Replay will also be interrupted when the time comes for a rotation of Live View pages. For example, if you have multiple Live View pages and you set up a rotation of these pages by every 10 seconds, page swap (rotation) still has a higher priority even if you are viewing the Instant Replay.

How to Use:

1.On a selected view cell, mouse over to the lower left corner. A Replay icon will appear.

2.Click on it to display the Replay control bar. Click on the play button.

3.The default queue length is 30 seconds. You can click on the number on the right to change

the queue length.

4.To stop the Replay and return to the Live View, click on the Return to Live button.

5.On a Replay view cell, you can apply the same Snapshot, Print, Single view and Full screen control as those on a normal view cell. You can also right-click to display the Display Mode and Video Enhancement functions.

Click and drag the playhead to skip or move to a different point in time on the playback.

An active Replay view cell is indicated by the Replay text indicator and the time of occurrence of the current playback.

34 - User's Manual

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Vivotek ND4801 user manual Prerequisites for Instant Replay
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ND4801 specifications

The Vivotek ND4801 is a next-generation network video recorder (NVR) designed for robust and efficient surveillance applications. With the rise of IP-based security systems, the ND4801 stands out as an advanced solution tailored for both small and large installations. One of its main features is the capability to support up to 64 channels of high-definition video recording, allowing for comprehensive monitoring across extensive environments.

Powered by Vivotek's cutting-edge technologies, the ND4801 employs H.265 video compression, which significantly reduces bandwidth usage and storage requirements without compromising video quality. This is particularly beneficial for users who need to store vast amounts of footage while maintaining clarity and detail. The recorder can accommodate various resolutions, including 4K Ultra HD, ensuring that even the most intricate details are captured effectively.

Another notable characteristic of the ND4801 is its user-friendly interface, which allows for easy configuration and management of connected cameras. The intuitive web interface provides real-time preview capabilities, playback, and advanced search functionalities, enabling users to efficiently navigate through recorded footage. Moreover, the NVR supports multiple display modes and layouts, facilitating seamless monitoring across multiple screens.

The device’s built-in RAID support further enhances data security, offering options for RAID 0, 1, 5, and 10 configurations. This ensures redundancy and data protection against potential drive failures, making it a reliable choice for mission-critical surveillance tasks. In addition, the ND4801 features PoE (Power over Ethernet) support, simplifying installation by allowing users to power cameras directly through the network cable, thus reducing cable clutter and installation costs.

To enhance surveillance capabilities, the ND4801 integrates sophisticated analytics features such as motion detection and people counting. These intelligent functions help in effectively managing alarms and can reduce false positives, leading to a more accurate monitoring experience. The ND4801 also supports integration with third-party VMS (Video Management Software), allowing for flexibility in system design and functionality.

In summary, the Vivotek ND4801 NVR is a powerful and versatile solution for modern surveillance needs. With its support for high-definition recording, advanced video compression, user-friendly interface, enhanced data security features, and intelligent analytics, the ND4801 is well-equipped to meet the demands of various industries, including retail, transportation, and critical infrastructure. Its robustness and adaptability make it an ideal choice for anyone seeking a reliable video surveillance solution.