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MediaPortal 1
Development
Improvement Suggestions
Automatic PAL/NTSC Switching for TV out
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<blockquote data-quote="htpcman" data-source="post: 5191" data-attributes="member: 10386"><p>Hi </p><p></p><p>Just an idea mainly for DVD playback. It would b nice to have a function that would allow MP to detect the Frame rate of a DVD (or File) and switch the TV output accordingly. This would mean if a DVD was 50/25 fps the output would go to PAL and if the DVD was 60/30 fps it would swtch to NTSC. </p><p></p><p>Why is this prefereable?</p><p></p><p>When you play a 60Hz DVD (NTSC) and the output is set to PAL then the graphics card has to essentially perform a standards conversion. what will happen is that a 60 Hz frame rate will be sampled at 50 fps thus volating the nyquist theorem. The result is a picture with juddery motion. this is very visible on horizontal pans or moving objetcs. By selecting the apropriate output frame rate this can be avoided.</p><p></p><p>ATM I use a workaround with "ATI Tray Tools". I have created 2 profiles one for PAL output and one for NTSC output and assigned a hot key "ALT+P,ALT+N" to each this allows manual hassle-free switching. I prefer this because selection of the TVout Standard is buried way down deep in the menu structure of the ATI driver making a quick switch impossible.</p><p></p><p>Alternatively to automatic switching it would be nice to have a button in MPs "My Videos" section that allows to toggle the 2 output formats.</p><p></p><p>cheers </p><p></p><p>htpcman</p></blockquote><p></p>
[QUOTE="htpcman, post: 5191, member: 10386"] Hi Just an idea mainly for DVD playback. It would b nice to have a function that would allow MP to detect the Frame rate of a DVD (or File) and switch the TV output accordingly. This would mean if a DVD was 50/25 fps the output would go to PAL and if the DVD was 60/30 fps it would swtch to NTSC. Why is this prefereable? When you play a 60Hz DVD (NTSC) and the output is set to PAL then the graphics card has to essentially perform a standards conversion. what will happen is that a 60 Hz frame rate will be sampled at 50 fps thus volating the nyquist theorem. The result is a picture with juddery motion. this is very visible on horizontal pans or moving objetcs. By selecting the apropriate output frame rate this can be avoided. ATM I use a workaround with "ATI Tray Tools". I have created 2 profiles one for PAL output and one for NTSC output and assigned a hot key "ALT+P,ALT+N" to each this allows manual hassle-free switching. I prefer this because selection of the TVout Standard is buried way down deep in the menu structure of the ATI driver making a quick switch impossible. Alternatively to automatic switching it would be nice to have a button in MPs "My Videos" section that allows to toggle the 2 output formats. cheers htpcman [/QUOTE]
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MediaPortal 1
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Automatic PAL/NTSC Switching for TV out
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