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26th February 2021, 13:21 | #1 | Link |
Registered User
Join Date: Oct 2018
Posts: 133
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How to correctly remove horizontally shifted frames?
I posted this on VideoHelp some days ago but didn't get any input.
I've this NTSC DVD which displays the following behavior: after QTGMC(), there are some ghosts with purple color and some ghosts with green color. Moreover, there are some not correctly matched frames, as you can see in the picture below. These duplicates follow some pattern, so it should be possible to remove them. How can I restore this to fluid playback and without the color problems? Here's the snippet. |
26th February 2021, 15:43 | #2 | Link | |
HeartlessS Usurer
Join Date: Dec 2009
Location: Over the rainbow
Posts: 10,980
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Quote:
Is NTSC 29.97fps, TFF, with blending fields, and a weird behaviour where every 5th & 6th field,[variable position] upper part of field seems to be captured a little while before bottom part [where your guys head goes weird, that is a source field]. Dont think anything is gonna help much, but I aint no expert. EDIT: Code:
VideoFileName ="D:\DVD\since snippet.demuxed.d2v" MPEG2Source(VideoFileName) AssumeTFF SeparateFields Trim(338,-1) # This seems to be field 334 when play from start (start mid GOP ?) AssumeframeBased Spline36Resize(640,480) Return Last EDIT: D2v flags as 100% video.
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I sometimes post sober. StainlessS@MediaFire ::: AND/OR ::: StainlessS@SendSpace "Some infinities are bigger than other infinities", but how many of them are infinitely bigger ??? Last edited by StainlessS; 26th February 2021 at 16:15. |
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26th February 2021, 16:26 | #3 | Link |
Registered User
Join Date: Oct 2018
Posts: 133
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My impression is that this was converted from PAL video at 49.95fps to NTSC video at 59.94fps via almost dupes. I feel something like QTGMC().TDecimate(0,1,6) should work to come back to 49.95fps, except this tdecimate line is not always decimating what it should. The reason being that the dupe is sometimes not clean, but a messed-up one like in the picture, so tdecimate doesn't get it right.
Last edited by bruno321; 26th February 2021 at 16:41. |
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