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<blockquote data-quote="Mister Bean" data-source="post: 363453" data-attributes="member: 78380">Hi Tourettes and all others,Very interesting stuff. . . .I have done some more investigation. I'm almost convinced that the difference in picture quality between DVBviewer and Mediaportal can be 'downdrilled' to the MediaPortal application itself. The reasons why I am thinking that are:- DVBviewer uses the same graph as DVBviewer.- It is MPEG2 decoder independent. Problem occurs with almost every MPEG2 (hard- and software) decoder. @ Tourettes, I've attached also a screendump of the Cyberlink Decoder settings. Tweaking of these settings gives me no improvement.- It is renderer independent. Problem occurs with VMR9 and EVR (under XP).- When I make a recording with Mediaportal and played this back with DVBviewer --&gt; picture is perfect!- Tweaking of decoder settings, VMR filtering or Catalyst settings gives no improvement.&nbsp; It seems to be there is going something wrong in the processing of the picture in Mediaportal or it has something to do with the VMR/EVR settings that are used by Mediaportal.In the attached zip-file you will find one small recording and two captured frames taken from this recording. It is best to open these captured frames in Windows Paint. Look specially at the (collar) of the shirt the presentator is wearing. In Mediaportal there is much more aliasing visible then in DVBviewer.I'm sad to conclude that the picture quality of DVBviewer is better (more purely, less aliasing) then in Mediaportal.This aliasing problem occurs only with MPEG2. MPEG4/H.264 transmissions (1080i and 720p) are looking wonderfull. Also 1080p content (MKV rips) are giving perfect quality. I'm looking forward to all replies to this interesting thread!Thanks in advance.Nico</blockquote>

[QUOTE="Mister Bean, post: 363453, member: 78380"] Hi Tourettes and all others, Very interesting stuff. . . . I have done some more investigation. I'm almost convinced that the difference in picture quality between DVBviewer and Mediaportal can be 'downdrilled' to the MediaPortal application itself. The reasons why I am thinking that are: - DVBviewer uses the same graph as DVBviewer. - It is MPEG2 decoder independent. Problem occurs with almost every MPEG2 (hard- and software) decoder. @ Tourettes, I've attached also a screendump of the Cyberlink Decoder settings. Tweaking of these settings gives me no improvement. - It is renderer independent. Problem occurs with VMR9 and EVR (under XP). - When I make a recording with Mediaportal and played this back with DVBviewer --> picture is perfect! - Tweaking of decoder settings, VMR filtering or Catalyst settings gives no improvement. It seems to be there is going something wrong in the processing of the picture in Mediaportal or it has something to do with the VMR/EVR settings that are used by Mediaportal. In the attached zip-file you will find one small recording and two captured frames taken from this recording. It is best to open these captured frames in Windows Paint. Look specially at the (collar) of the shirt the presentator is wearing. In Mediaportal there is much more aliasing visible then in DVBviewer. I'm sad to conclude that the picture quality of DVBviewer is better (more purely, less aliasing) then in Mediaportal. This aliasing problem occurs only with MPEG2. MPEG4/H.264 transmissions (1080i and 720p) are looking wonderfull. Also 1080p content (MKV rips) are giving perfect quality. I'm looking forward to all replies to this interesting thread! Thanks in advance. Nico [/QUOTE]

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