A video surveillance card is typically a PCI-based expansion card designed to capture video signals from cameras or video sources and store them on a hard drive in MPEG format. These cards play a crucial role in security systems, enabling the recording and playback of video footage for monitoring and investigation purposes.
**First, Playback Quality**
One of the most critical functions of a security monitoring system is the ability to review historical video footage. The quality of playback is a key performance indicator for a surveillance capture card. A genuine card should support 10-bit ultra-high-definition D1 resolution with accurate color representation and no lag. Achieving this level of quality is extremely difficult with counterfeit cards, which often result in distorted images, color shifts, and delays during playback.
**Second, Display Resolution**
The resolution of a surveillance capture card is usually divided into display resolution and video resolution. The display resolution refers to the desktop resolution of the Windows system. A genuine capture card can achieve a resolution of 704x576 when using multi-screen layouts, while recording and streaming, it can maintain resolutions like 352x288 or 320x240. These are standards that many low-quality cards on the market fail to meet. Counterfeit cards often produce pixelated or blurry images, leading to poor visual quality during playback.
**Third, RMON (Remote Monitoring)**
Remote monitoring is a fundamental feature of modern surveillance systems. However, some engineering companies may lack confidence in the remote capabilities of their capture cards. A reliable card should support features such as multi-screen viewing, video playback, dynamic IP address handling, automatic reconnection after power loss, remote control, configuration, status checks, stream adjustment, two-way voice communication, alarm triggering, and multicast functionality. It’s important to not only check if these functions are present but also to evaluate the quality of the remote video feed, rather than just focusing on smoothness.
**Fourth, Frame Rate**
Frame rate, measured in frames per second (fps), indicates how many images the graphics processor can update each second. A higher frame rate results in smoother and more realistic motion. For standard P-systems, a frame rate of around 100 fps is considered excellent. In contrast, pirated cards typically offer less than 75 fps, significantly lower than what is needed for clear and fluid video playback.
**Fifth, Card Functionality**
A genuine surveillance capture card should support essential functions such as image acquisition, recording, and remote transmission. It should also be capable of receiving and processing alarm signals, linking them to the central monitoring station, controlling PTZ cameras and lenses, and managing matrix switchers for video routing. Many counterfeit cards fall short in providing all these features.
**Sixth, After-sales Service**
After-sales service is an integral part of purchasing a genuine surveillance card. While price is often a primary concern, many users overlook the importance of support. Pirated cards rarely come with proper technical assistance or warranty coverage, leaving users without help when issues arise. This can lead to significant disruptions and damage to business operations. Therefore, users should educate themselves about anti-piracy measures and engage in technical discussions to assess whether the supplier has real service capabilities.
Today's smart video surveillance capture cards are widely used in various industries, including banking, telecommunications, utilities, prisons, transportation, shopping malls, factories, and government institutions. They provide advanced features like intelligent brightness adjustment and local amplification, making them ideal for modern security applications.
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