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MediaPortal 1
MediaPortal 1 Talk
Picture quality from HTPCs in general
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<blockquote data-quote="KevL" data-source="post: 283002" data-attributes="member: 11798"><p>Hi</p><p></p><p>Picture quality issues may well be something to do with interlacing.</p><p></p><p>Im watching PAL SD DVB transmissions mainly.</p><p></p><p>I do also have a couple of PAL HD channels to watch. </p><p></p><p>I have the ATI catalyst driver 8.4 set to output 1280x720p @ 50Hz via HDMI to a pioneer plasma. This reports 1280x720 @50Hz.</p><p></p><p>I'm now using the Nvidia Pure Video decoder for Mpeg2 decode (following Bolders kind recommendation) and CoreAVC for HD decode.</p><p></p><p></p><p><strong>MP is configured as follows</strong>.</p><p></p><p>VMR9 ON</p><p>Use for playback of webstreams = ON</p><p>Use Exclusive mode = ON</p><p>Use Nons square mixing for scaling = ON</p><p>Filtering Mode = None</p><p></p><p>NVidea PureVvideo</p><p>Use Hardwarte Acceleration = ON</p><p>De-Interlace Control = Automatic</p><p>De-Interlace Mode = VMR Default</p><p>Colour Scheme = Default</p><p>Adio Decoder External Reciever = SPDIF Mode</p><p></p><p></p><p><strong>ATI driver is configured as follows</strong>.</p><p></p><p>Display Manager Select display on HD3200 = Pioneer_PDP (single)</p><p>Display Manager Desktop Area = 1280x720</p><p>Display Manager Colour Quality = 32bit</p><p>Display Manager Refresh Rate = 50Hz</p><p>Wait for vertical Refresh = always ON.</p><p>3d Refresh rate override = 50Hz </p><p>AVIVO Video Basic Quality = use automatic deinterlacing </p><p></p><p>I have also applied the ATI Tweak registry settings from here <a href="http://exdeus.home.comcast.net/~exdeus/ati-hd2x00/ATI_HD_Reg_Tweaks_0.14.vbs" target="_blank">http://exdeus.home.comcast.net/~exdeus/ati-hd2x00/ATI_HD_Reg_Tweaks_0.14.vbs</a>. These clean up picture quality and set video levels to 0-256 for SD and HD output to get black blacks from all sources.</p><p></p><p></p><p>So, lots of Auto settings for deinterlacing. To be honest find the whole dinterlacing thing confusing for video playback. I understand exactly what deinterlacing is but am not sure of the implications of settings various bits in the playback chain to do it or not to do it etc. Presumably if the ATI card does the deinterlacing then it will be best since it will use its hardware engine to do the job. But since the purevideo decoder uses HA then maybe this doesnt matter???? But then I've read that VMR9 thing also does deinterlacing?????? Maybe my picture is being over deinterlaced <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused :confused:" loading="lazy" data-shortname=":confused:" /></p><p></p><p>HTPCs are Bloody complicated .</p><p></p><p>Kev</p></blockquote><p></p>
[QUOTE="KevL, post: 283002, member: 11798"] Hi Picture quality issues may well be something to do with interlacing. Im watching PAL SD DVB transmissions mainly. I do also have a couple of PAL HD channels to watch. I have the ATI catalyst driver 8.4 set to output 1280x720p @ 50Hz via HDMI to a pioneer plasma. This reports 1280x720 @50Hz. I'm now using the Nvidia Pure Video decoder for Mpeg2 decode (following Bolders kind recommendation) and CoreAVC for HD decode. [B]MP is configured as follows[/B]. VMR9 ON Use for playback of webstreams = ON Use Exclusive mode = ON Use Nons square mixing for scaling = ON Filtering Mode = None NVidea PureVvideo Use Hardwarte Acceleration = ON De-Interlace Control = Automatic De-Interlace Mode = VMR Default Colour Scheme = Default Adio Decoder External Reciever = SPDIF Mode [B]ATI driver is configured as follows[/B]. Display Manager Select display on HD3200 = Pioneer_PDP (single) Display Manager Desktop Area = 1280x720 Display Manager Colour Quality = 32bit Display Manager Refresh Rate = 50Hz Wait for vertical Refresh = always ON. 3d Refresh rate override = 50Hz AVIVO Video Basic Quality = use automatic deinterlacing I have also applied the ATI Tweak registry settings from here [url]http://exdeus.home.comcast.net/~exdeus/ati-hd2x00/ATI_HD_Reg_Tweaks_0.14.vbs[/url]. These clean up picture quality and set video levels to 0-256 for SD and HD output to get black blacks from all sources. So, lots of Auto settings for deinterlacing. To be honest find the whole dinterlacing thing confusing for video playback. I understand exactly what deinterlacing is but am not sure of the implications of settings various bits in the playback chain to do it or not to do it etc. Presumably if the ATI card does the deinterlacing then it will be best since it will use its hardware engine to do the job. But since the purevideo decoder uses HA then maybe this doesnt matter???? But then I've read that VMR9 thing also does deinterlacing?????? Maybe my picture is being over deinterlaced :S HTPCs are Bloody complicated . Kev [/QUOTE]
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