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MediaPortal 1
MediaPortal 1 Talk
Suggestions for reliable PCIe DVB-S2 tuner
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<blockquote data-quote="CyberSimian" data-source="post: 1274897" data-attributes="member: 141969"><p>This is a long-standing issue with graphics cards, because most graphics cards are optimised for game play, whereas an HTPC needs a graphics card optimised for video playback. The issue that causes most problems is when the video stream switches frequently between progressive and interlaced output (not something games writers ever worry about).</p><p></p><p>Using the info display on my Sony TV, I have seen the video switch between progressive and interlaced <strong>within a single advertisement</strong> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /> (typically some studio shots intercut with landscape shots, filmed with a different camera).</p><p></p><p>Another problem is horizontal panning, or horizontally or vertically scrolling credits at the end of a programme. I have a clip from the drama "Remember Me" that was shot in progressive format with multi-channel sound. When I first played the recording, there was appalling jerkiness in a scene containing horizontal panning. By experimenting with the LAV settings I was eventually able to cure that. But I have another recording of an older programme that also has jerky horizontal panning, but which is not solved by the settings that fix "Remember Me". I have not found a solution for that. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p><p></p><p>With my current setup (using the GT610), scrolling credits do still look jerky sometimes, but ordinary programmes don't have jerky panning (mostly), i.e. the jerkiness is at a sufficiently low level that I don't notice it on most video. 100% smooth playback would be wonderful, but I don't know how to obtain it. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p><p></p><p>I am currently building a new HTPC, using an Intel Skylake processor. The intention is to use the integrated Intel graphics if possible (to reduce power consumption and heat production), but if that is not satisfactory for HD, I will use the HD6450. I have not yet tried the HD6450 with HD video, so I don't know whether it will suffer from the same quirks as the GT610 (acceptable), be better (hooray), or worse (boo). If the HD6450 is unsatisfactory too, I will revert to the GT610. My new HTPC will be completely fanless.</p><p></p><p>Sadly, we HTPC users have no way of knowing in advance whether a particular graphics card will produce smooth video, and if it does not, that may simply be because we are not using the correct settings. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p><p></p><p>-- from CyberSimian in the UK</p></blockquote><p></p>
[QUOTE="CyberSimian, post: 1274897, member: 141969"] This is a long-standing issue with graphics cards, because most graphics cards are optimised for game play, whereas an HTPC needs a graphics card optimised for video playback. The issue that causes most problems is when the video stream switches frequently between progressive and interlaced output (not something games writers ever worry about). Using the info display on my Sony TV, I have seen the video switch between progressive and interlaced [b]within a single advertisement[/b] :eek: (typically some studio shots intercut with landscape shots, filmed with a different camera). Another problem is horizontal panning, or horizontally or vertically scrolling credits at the end of a programme. I have a clip from the drama "Remember Me" that was shot in progressive format with multi-channel sound. When I first played the recording, there was appalling jerkiness in a scene containing horizontal panning. By experimenting with the LAV settings I was eventually able to cure that. But I have another recording of an older programme that also has jerky horizontal panning, but which is not solved by the settings that fix "Remember Me". I have not found a solution for that. :( With my current setup (using the GT610), scrolling credits do still look jerky sometimes, but ordinary programmes don't have jerky panning (mostly), i.e. the jerkiness is at a sufficiently low level that I don't notice it on most video. 100% smooth playback would be wonderful, but I don't know how to obtain it. :( I am currently building a new HTPC, using an Intel Skylake processor. The intention is to use the integrated Intel graphics if possible (to reduce power consumption and heat production), but if that is not satisfactory for HD, I will use the HD6450. I have not yet tried the HD6450 with HD video, so I don't know whether it will suffer from the same quirks as the GT610 (acceptable), be better (hooray), or worse (boo). If the HD6450 is unsatisfactory too, I will revert to the GT610. My new HTPC will be completely fanless. Sadly, we HTPC users have no way of knowing in advance whether a particular graphics card will produce smooth video, and if it does not, that may simply be because we are not using the correct settings. :( -- from CyberSimian in the UK [/QUOTE]
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Suggestions for reliable PCIe DVB-S2 tuner
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