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MediaPortal 1
MediaPortal 1 Talk
MediaPortal's EVR Scaling Algorithm
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<blockquote data-quote="DragonQ" data-source="post: 981218" data-attributes="member: 115209"><p>Does anyone know what scaling algorithm EVR uses by default in MediaPortal? Does it use DXVA2 scaling and thus depend on your GPU? I'm guessing the answer is no since I get identical results with an nVidia GTS 250 and nVidia GT 430.</p><p> </p><p>The reason I'm asking is that SD channels look pretty blocky in MediaPortal (using EVR and LAV DXVA2 Native). The same TS file looks better when playing it in MPC-HC using "EVR Custom Presenter" in "Bicubic A=-0.75" mode, so presumably that is set to use a higher quality scaling algorithm than MediaPortal's EVR implementation. I've attached some comparison screenshots - the differences in aliasing are easy to see in the text. Maybe MediaPortal's EVR is using bilinear or something?</p><p> </p><p>Is there any way of changing the scaling algorithm being used, perhaps in the MediaPortal source code?</p></blockquote><p></p>
[QUOTE="DragonQ, post: 981218, member: 115209"] Does anyone know what scaling algorithm EVR uses by default in MediaPortal? Does it use DXVA2 scaling and thus depend on your GPU? I'm guessing the answer is no since I get identical results with an nVidia GTS 250 and nVidia GT 430. The reason I'm asking is that SD channels look pretty blocky in MediaPortal (using EVR and LAV DXVA2 Native). The same TS file looks better when playing it in MPC-HC using "EVR Custom Presenter" in "Bicubic A=-0.75" mode, so presumably that is set to use a higher quality scaling algorithm than MediaPortal's EVR implementation. I've attached some comparison screenshots - the differences in aliasing are easy to see in the text. Maybe MediaPortal's EVR is using bilinear or something? Is there any way of changing the scaling algorithm being used, perhaps in the MediaPortal source code? [/QUOTE]
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MediaPortal 1
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MediaPortal's EVR Scaling Algorithm
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