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Message: <blockquote data-quote="kiwijunglist" data-source="post: 527756" data-attributes="member: 76888">@crackofdawn - this will reduce video quality, because you are not using 1:1 mapping, so the picture wont be as sharp.to get best quality you need to have set resolution to the native resolution of the display, overscan = 0%, then adjust TV to use pixel mapping.  Unfortunately some displays won't do 1:1 mapping or accept their native resolution as input, also some TVs will only pixel map over VGA and refuse to do it over HDMI/DVI, so it really depends on what your TV is capable of.This feature is designed for users who can't acheieve pixel mapping, or have overscan problems.  It is also used to correct aspect ratio eg. you have a 16:9 TV, however it has 1024x768 pixels (ie 4:3 ratio of pixels).</blockquote>