Vonnic Standalone DVR Instrukcja Użytkownika Pobierz pdf (Strona 8)

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Video Compression

MPEG4 and H.264 are the most popular video compression choices. The key to video compres-

sion is the resolution and the size of the video. High resolution video files are monster size

files and video compression for storage and streaming is critical to any video application.

H.264 is the preferred compression method because it provides high resolution video quality

from the smallest amount of video data required. Smaller files require less bandwidth and

storage over previous generations of video codec’s. H.264 delivers the same quality as MPEG-

2 at a third to half the data rate and up to four times the frame size of MPEG-4 Part 2 at the

same data rate.

Recording Speed

The speed of recording is a critical part of any CCTV application. To have a smooth, gapless

motion video, you must be able to real-time. A video is considered as real-time video when its

recorded at 30 fps (frames per second). This ensures a consistently smooth video. All Vonnic

DVRs record at 30 fps per camera.

Storage Capacity

Another important feature of a DVR is its storage capacity. When configuring how much stor-

age you need, you must consider the following:

How many days of video do you want to store?

Number of cameras recording?

Frames per second each camera is recording?

How many hours per day to record?

How many days of the week to record?

For example, a CCTV system with 6 cameras each recording at 30 fps, 24 hours a day, 7 days

a week needs 1.4TB of storage space to maintain the data for 30 days.

Network Access and Remote Viewing

Network access is crucial to remotely access or monitor a video feed across a LAN, WAN, or

via the internet. Newer DVRs feature the ability to remote view over a 3G network making it

convenient for mobile phone users to access their DVR from virtually anywhere.

Advanced DVR Features

Other important features to consider when purchasing a DVR:

Motion Recording (enables motion trigger recording)

PTZ Support (enables pan, tilt, and zoom control)

POS Integration (enhances loss prevention)

Backup Solution (method to archive or extract data)

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Vonnic Standalone DVR Instrukcja Użytkownika Strona 8