What is Component Video?

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  • Written By: R. Kayne
  • Edited By: Niki Foster
  • Last Modified Date: 03 February 2019
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Component video is one of the high-end video interfaces offered on audiovisual equipment today. It supersedes composite video and S-Video by providing greater signal clarity than either, resulting in better picture quality. The component video interface consists of three RCA or coaxial jacks, one green, one red and one blue, requiring three cables. It carries visual data only. Audio cables are still required.

Like composite and S-Video, component video is an analog interface, but its three cables better preserve the various elements of the video source signal. These elements are the Y signal, which carries brightness or contrast values, and the C signal, which carries red and blue or color data. Green values are parsed by a deductive process from reading all three streams. Therefore, this interface is sometimes referred to as "RGB" for red, green, blue. The interface is marked either Y Pr Pb or Y Cr Cb.

There is some misunderstanding among technophiles as to the difference between component video marked Y Pr Pb versus Y Cr Cb, with some claiming the latter is digital while the former is analog. Experts point out that both designations mean the same thing on consumer level equipment, and both are analog. There is a digital variety of Y Cr Cb, but it is not used in consumer level products.


While regular television signals, VHS tapes and laserdiscs all encode visual data using lesser quality composite video, DVDs use component video for encoding visual data. A DVD player with component video outputs, connected to a television with comparable inputs, will provide a picture far superior than one using composite video connections. Component video is also a step up from S-Video in that it is a multi-scan technology, which means it can deliver the video stream in differing modes to accommodate various frame rates for progressive-scan or interlaced televisions.

Component video cables are available in different configurations. All three cables might be encased in a single sheath with triple tails at each end, or the cables might be bonded or ribboned together. Three single RCA or coaxial cables can also be used, but should be the same length and type. Increased cable quality, tips and shielding add to the cost, as will the length of the cables.

Many people have numerous free cables around the house from purchasing past equipment, and some people opt to use these to connect component video. Bear in mind that standard cables are color-coded red and white, so care must be taken to match the green, red and blue jacks with the same wire on both pieces of equipment. Cabling made for component video is color-coded green, red and blue for this reason. It is also usually of higher quality and might have better shielding coverage and lower impedance levels. If results are unsatisfactory using standard cables, a cable upgrade might make a difference.


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Post 8

The signal transferred into the VGA-plug input/output is the same as is carried through to/in the three RCA-plugs for a signal via so called Component Video inputs/outputs.

So, either get an adapter for that purpose, or preferably, ask some pros to make a cable for You with VGA-plug in one, and the three RCA-plugs in the other end, and ask that person/pro to also color mark the three RCA-plugs so that they will be plugged in correctly in the corresponding outlets.

Post 7

you can also get a Y-type cable that will take the feed between your pc and your monitor and send it to whatever you want. you can also get that wireless..

also my pc is next to my tv and my tv screen. the wireless mouse/keyboard and it works like a charm (S-video out + headphone jack together in a cable --> tv)

Post 6

Can you connect RGB to Red White and Yellow input slots?

Post 5


Can I get a cable that will output VGA from a computer to Component video on a HDTV?


You can buy a graphics card like the person above mentioned which is the least expensive option. However if you'd prefer not to install a new graphics card you can buy a PC scan convertor that runs for about $80-$100 which will take VGA from your PC and covert into a) s-video b) composite or c)component video.

Post 4

i have a component output device and scart equipped rgb enabled tv set, can i connect those two with the appropriate cabling.

Post 3

I have a satellite dish box and plasma tv. Can i use component video cable to get picture on my tv from the box without using coaxial cable?

Post 2

You need a graphics card with a video-out port. Most modern cards have DVI-out, and some come with a dongle that plugs into the DVI port and has component video on the other end. (Or you can buy one.) A component video cable is then required to link the devices. There are a lot of different ways to connect a computer to an HDTV, but DVI-to-HDMI is preferred using a cable made for this.

Post 1

Can I get a cable that will output VGA from a computer to Component video on a HDTV?

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