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MediaPortal 1
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Installation, configuration support
Any way to change refresh rate to 1080i25?
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<blockquote data-quote="mm1352000" data-source="post: 1202825" data-attributes="member: 82144"><p>People usually describe what you're calling 1080i25 as 1080i<strong>50.</strong></p><p></p><p>The resolution of 1080i is still 1920x1080 like 1080p. It's just that each <strong>field </strong>has half the vertical resolution. Two fields make a frame, so the overall <strong>frame </strong>rate is 25 frames per second... but the refresh rate should be 50 Hz to match the <strong>field</strong> rate.</p><p></p><p>Given the explanation above, the correct resolutions and refresh rates for 1080p50 and "1080i25" are the same when the PC does the deinterlacing. That's why the "PAL" and "PALHD" entries in MP's default refresh rate changer config are the same (50 Hz). From that perspective what you're asking/saying doesn't make any sense to me.</p><p></p><p></p><p>Without meaning to be picky, 1080i25 is not a refresh rate. 50 Hz is a refresh rate. The 1080 part is the vertical resolution, and the i part indicates that the video is interlaced. You probably know this... but for clarity's sake it helps to use standard terminology.</p><p></p><p></p><p>Yes... but this is not particularly relevant unless you've specifically configured your PC and TV in such a way that the TV handles deinterlacing for the PC input. That would be quite unusual. In most setups the PC handles deinterlacing and the TV sees a progressive (opposite of interlaced) signal at a fixed resolution. For example, the TV would see 1080p instead of 1080i for a 1080i channel or video. The video codec and/or GPU handle conversion.</p><p></p><p></p><p>Sounds like you've somehow managed to disable automatic deinterlacing on the PC side and are trying compensate with a setting on the TV side. I'd recommend to focus on the <strong>deinterlacing </strong>settings <strong>on the PC</strong>; the resolution and refresh rate stuff is a red herring.</p><p></p><p></p><p>Mmmm, it's either wishful thinking or confusion. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p>MP can only control the PC's output refresh rate; it can't do anything about the TV settings.</p><p>If you <em>have</em> managed to disable deinterlacing on the PC side, the only way to solve it from the TV side would be to have the TV auto-detect the correct mode (resolution, refresh rate, interlaced/progressive). A single non-auto setting value couldn't give you good results for all sources. But again, my recommendation is to fix this on the PC side with appropriate deinterlacing settings, not to be thinking about the TV side.</p></blockquote><p></p>
[QUOTE="mm1352000, post: 1202825, member: 82144"] People usually describe what you're calling 1080i25 as 1080i[B]50.[/B] The resolution of 1080i is still 1920x1080 like 1080p. It's just that each [B]field [/B]has half the vertical resolution. Two fields make a frame, so the overall [B]frame [/B]rate is 25 frames per second... but the refresh rate should be 50 Hz to match the [B]field[/B] rate. Given the explanation above, the correct resolutions and refresh rates for 1080p50 and "1080i25" are the same when the PC does the deinterlacing. That's why the "PAL" and "PALHD" entries in MP's default refresh rate changer config are the same (50 Hz). From that perspective what you're asking/saying doesn't make any sense to me. Without meaning to be picky, 1080i25 is not a refresh rate. 50 Hz is a refresh rate. The 1080 part is the vertical resolution, and the i part indicates that the video is interlaced. You probably know this... but for clarity's sake it helps to use standard terminology. Yes... but this is not particularly relevant unless you've specifically configured your PC and TV in such a way that the TV handles deinterlacing for the PC input. That would be quite unusual. In most setups the PC handles deinterlacing and the TV sees a progressive (opposite of interlaced) signal at a fixed resolution. For example, the TV would see 1080p instead of 1080i for a 1080i channel or video. The video codec and/or GPU handle conversion. Sounds like you've somehow managed to disable automatic deinterlacing on the PC side and are trying compensate with a setting on the TV side. I'd recommend to focus on the [B]deinterlacing [/B]settings [B]on the PC[/B]; the resolution and refresh rate stuff is a red herring. Mmmm, it's either wishful thinking or confusion. ;) MP can only control the PC's output refresh rate; it can't do anything about the TV settings. If you [I]have[/I] managed to disable deinterlacing on the PC side, the only way to solve it from the TV side would be to have the TV auto-detect the correct mode (resolution, refresh rate, interlaced/progressive). A single non-auto setting value couldn't give you good results for all sources. But again, my recommendation is to fix this on the PC side with appropriate deinterlacing settings, not to be thinking about the TV side. [/QUOTE]
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Any way to change refresh rate to 1080i25?
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