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MediaPortal 1
MediaPortal 1 Talk
Best picture quality in Vista with Gigabyte GA-MA78GM-S2H
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<blockquote data-quote="kszabo" data-source="post: 350433" data-attributes="member: 61646"><p>I am happy that you found your solution.</p><p></p><p>I would explain just once more <strong>how this works</strong>:</p><p>The HTPC produces a signal with 1280*720 pixels. The TV enlarges it with 20-30% (scales it up, this makes the picture unsharp) and displays this picture on your 1366*768 panel. It cuts the edges of the picture (the upscaled picture is bigger than the panel resolution). This is called "overscan" (relict from the analog TV era to avoid black edges). To make this more complex my old plasma has not even quadratic pixels <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> (1024*768 as 16:9).</p><p></p><p>How can you compensate this? <strong>3 possibilities:</strong></p><p><strong>1. </strong>deactivate overscan function of the TV and connect HTPC with the native panel resolution. This is called <strong>1:1 pixel mapping</strong>, oft only through VGA possible. This is the best as you avoid scalig artefacts (important for desktop sharpness). As your films have always different resolution than your panel this is not so important (the film will be up or downscaled by the graphic card). The best is to watch 1080px films on a 1080 panel wich is pixel mapped <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />. </p><p><strong>2.</strong> if you cannot deactivate the overscan you can compensate the problem <strong>through your graphics card through scaling</strong>: it scales the desktop down and puts black border around it. As this signal goes through the process above you get desktop-display match (not very precise), but relative unsharp (scaling desktop down and then up - what a stupidity) - this is called also "resolution in resolution", achieved with powerstrip earlier (now CCC makes this itself)</p><p><strong>3.</strong> compensate the problem <strong>with custom resolutions</strong> in CCC - make desktop resolution smaller, resulting desktop-display panel match again after TV-upscaling+overscan. If you use this option, don´t use scaling! makes no sense.</p><p></p><p>this is my interpretation, hopefully correct and understandable. Greetings</p></blockquote><p></p>
[QUOTE="kszabo, post: 350433, member: 61646"] I am happy that you found your solution. I would explain just once more [B]how this works[/B]: The HTPC produces a signal with 1280*720 pixels. The TV enlarges it with 20-30% (scales it up, this makes the picture unsharp) and displays this picture on your 1366*768 panel. It cuts the edges of the picture (the upscaled picture is bigger than the panel resolution). This is called "overscan" (relict from the analog TV era to avoid black edges). To make this more complex my old plasma has not even quadratic pixels :-) (1024*768 as 16:9). How can you compensate this? [B]3 possibilities:[/B] [B]1. [/B]deactivate overscan function of the TV and connect HTPC with the native panel resolution. This is called [B]1:1 pixel mapping[/B], oft only through VGA possible. This is the best as you avoid scalig artefacts (important for desktop sharpness). As your films have always different resolution than your panel this is not so important (the film will be up or downscaled by the graphic card). The best is to watch 1080px films on a 1080 panel wich is pixel mapped :-). [B]2.[/B] if you cannot deactivate the overscan you can compensate the problem [B]through your graphics card through scaling[/B]: it scales the desktop down and puts black border around it. As this signal goes through the process above you get desktop-display match (not very precise), but relative unsharp (scaling desktop down and then up - what a stupidity) - this is called also "resolution in resolution", achieved with powerstrip earlier (now CCC makes this itself) [B]3.[/B] compensate the problem [B]with custom resolutions[/B] in CCC - make desktop resolution smaller, resulting desktop-display panel match again after TV-upscaling+overscan. If you use this option, don´t use scaling! makes no sense. this is my interpretation, hopefully correct and understandable. Greetings [/QUOTE]
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Best picture quality in Vista with Gigabyte GA-MA78GM-S2H
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