Here is a comparison of HDMI and Component video. Both cables broadcast High Def but HDMI uses a digital signal while Component uses analog. More differences are explained in the video. A few basic things. Component video as you know is the red, blue, and green cable and it started to enter the home theater industry from around 2001 to 2002. Back then it was the common form of getting your HD signal but common HD signals today such as 720p or 1080p/i were not popular and did not penetrate the market since it was expensive to produce the chips. Instead you had 480p which is also coined as "Progressive Scan". This was common on almost all DVD players and few cable and dish receivers. Slowly 720p and 1080i penetrated the market and Component was able to support the bandwidth for those signals. This happened from around 2003-2005. It was not until late 2005 that sets started to have 1080p but they were quite expensive. Component theoretically supports 1080p and it has been proven and tested. However most tv sets do not support 1080p through Component maybe due to incompatible frequencies (I might be wrong, if anyone knows send me a message to correct this). HDMI then already developed 2003 but was not popular and it was until late 2005 that is started to appear on a lot of tv sets. HDMI supported all video resolutions and had the capacity to expand, it also supported audio as well and this was all transmitted to one cable that was thiner than component. Below I will lay out ...
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