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What’s the Difference Between VGA, HDMI and DVI? Which is better?

  • Autore:Melody Ke
  • Rilasciare il:2016-06-06
In the CCTV field sometimes we will face the problems with the video output port, like the most often used VGA, HDMI and DVI... Today we will share with your the difference between them.

VGA is the oldest standard of the three, having been introduced in 1987. VGA handles video only and not sound, contains no security or digital rights management, and is an analog signal, meaning the quality of the cable, the quality of the pins, and the distance from the recorder to the monitor can all have an effect on video quality. If your connector has little thumbscrews next to the cable, and looks like the left graphic, it’s VGA.

HDMI, which first appeared in 2003, is often found on modern televisions, but is also on most newer PC monitors, and is swiftly becoming required hardware on most laptops. HDMI is a digital standard, meaning the connection is either on (1) or off (0). The quality of the cable, the distance from the machine to the monitor and the type of metal in the connector are all virtually irrelevant (so don’t pay a whole lot for your HDMI cable!) HDMI is very common in the security, meaning that certain types of signals, such as pay TV, can be blocked from traveling along an HDMI cable. HDMI handles sound as well as video,even the 1080P definition, so a monitor with a headphone jack and an HDMI cable can output sound from your laptop or CCTV DVR. The HDMI is a good choice as a video output connector. Right now,all MVTEAM DVRs support HDMI output(1920*1080).

DVI was invented in 1999 and is similar to both VGA and HDMI. It can be configured for digital,
analog, or both; it can handle digital rights management; and it can be converted to both HDMI and VGA through a converter cable or dongle (small converter device). More than likely, your video card has an HDMI and a DVI connector, or one or the other, and will often ship with the required dongle. It does not support sound like HDMI does, and have the best image quality in these three ways.

MVTEAM is a professional manufacturer and exporter of CCTV Surveillance & DVR equipments in Shenzhen China .If you still have questions about the three video output standard or have any inquiry about CCTV products, please feel free to contact with us