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<blockquote data-quote="ziphnor" data-source="post: 56948" data-attributes="member: 14215">As i said previously its hard to tell whether or not that information can be trusted, it might just be showing 75Hz as *input*, while it converts to 60Hz internally. PAL is completely smooth only at multiples of 50Hz. However PAL consists of 50 interlaced half-images which can be de-interlaced to 25 progressive frames which can theoreticly play smoothly at 75Hz, but i would be surprised to see it working practice, since the 25 frames will be duplicated for a 50Hz progressive output and then the 50-&gt;75 conversion will take place.Forcing 50Hz is the best way overall, i havent had jerkyiness problems on my HDTV after i forced 50Hz(as mentioned above, its a good idea to use the frequency override in the drivers to prevent programs from suddenly switching to 60hz).EDIT:If you have a standard SCART-output DVD player you could try playing back a DVD through that, it will output 50Hz interlaced, and the TV will deal with it as best it can, if its still jerky, then the LCD is simply incapable of doing 50Hz!</blockquote>

[QUOTE="ziphnor, post: 56948, member: 14215"] As i said previously its hard to tell whether or not that information can be trusted, it might just be showing 75Hz as *input*, while it converts to 60Hz internally. PAL is completely smooth only at multiples of 50Hz. However PAL consists of 50 interlaced half-images which can be de-interlaced to 25 progressive frames which can theoreticly play smoothly at 75Hz, but i would be surprised to see it working practice, since the 25 frames will be duplicated for a 50Hz progressive output and then the 50->75 conversion will take place. Forcing 50Hz is the best way overall, i havent had jerkyiness problems on my HDTV after i forced 50Hz(as mentioned above, its a good idea to use the frequency override in the drivers to prevent programs from suddenly switching to 60hz). EDIT: If you have a standard SCART-output DVD player you could try playing back a DVD through that, it will output 50Hz interlaced, and the TV will deal with it as best it can, if its still jerky, then the LCD is simply incapable of doing 50Hz! [/QUOTE]

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