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Here's an example video showing you how easy it is: Select the one you want and see if it looks good to you.
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They are easy to use, just open the OSD, press right, then go to video processing, and then "Load Preset". Video Presets were added so you can easily load a good-looking preset that will work in most situations. There are lots of options to play with, here's some basic ones. Also, you can use 5x overscan mode to push a 1200p image into 1080p for square pixels and nearly the original overscan of a CRT, depending on the game's resolution. You can change your resolution, modify the framebuffer to reduce input latency and video stuttering, add some video filters, use shadowmasks, and even gamma correction. Here's a description of some basic video customization features on the MiSTer.
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Video Configuration Video Configuration Table of contents.
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