It’s been said that someday almost every electronic appliance will be tied to the Internet; so enters the IP camera and DVR. Don’t take this the wrong way, this is definitely a good thing for the digital video security and surveillance system industry. Providing digital video systems with a mechanism to connect to the Internet places the power of versatility and omnipresence in the user’s hand. But what exactly does IP mean and how do these devices work? We’ll try to answer these questions in the following article.
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IP Camera and DVR
Friday, February 4th, 2011The Difference Between CIF And 4CIF Resolution
Thursday, August 13th, 2009
When configuring your DVR for optimal recording, there are many options you will be considering. Among them is the resolution you want to record in. While most DVR’s can record in CIF resolution (360×240) at the maximum frame rate provided by the DVR, some can also record at higher resolutions by reducing the frame rate. For example, you may be able to record on any channel at CIF resolution at 30 frames per second, but then you would probably only be able to record at 7.5 fps per second if you changed the resolution to 4CIF (704×480). You will have to decide for each camera (assuming your DVR has independent resolution settings for each channel) which resolution you want to record in. Remember, what you see is not always what you get! Most DVR’s will display live video in 4CIF or D1 (720×480) resolution, but they are often recording in a much lower resolution.
