NewHome › Forums › General gaming › Line doubled 480p and HDTV/monitor stretching
Anonymous.
Anonymous
Need a quick technical clarification:
Since most modern digital displays do support 480p mode, won’t they “re-scale” that resolution mode anyway to fit the screen (either by aspect ratio with black borders OR full screen stretch)?
If so, doesn’t that add as much lag as it would with 240p upscaling if supported by the display?
Since most modern digital displays do support 480p mode, won’t they “re-scale” that resolution mode anyway to fit the screen (either by aspect ratio with black borders OR full screen stretch)?
A modern display will re-scale anything other than a signal sent at its native resolution.
If so, doesn’t that add as much lag as it would with 240p upscaling if supported by the display?
No, scaling adds relatively little lag (usually none). It’s picture processing and especially deinterlacing that adds the most lag. Especially in the case of 240p which is nearly always recognised incorrectly as 480i.
Anonymous
How does this info fit in then: https://github.com/RetroPie/RetroPie-Setup/wiki/Input-Lag#use-hdtvs-native-display-resolution
For many TVs that information is simply inaccurate and lag testers such as Time Sleuth and Leo’s tester can prove it. I have yet to test a HDTV where there’s a difference in lag between e.g 720p and 1080p, though of course there are millions of displays out there so results can and do vary.
Anonymous
So does a line doubler like tink2x do PAL (288p) to 480p too? I won’t get some bizzare 48Xp out?
288p linedoubles to 576p, not 480p.
Anonymous
Oh it doubles PAL too, didn’t notice that, nice.
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