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Jagged edges in original DV footage
I’m editing a short movie shot by someone else. One of their tapes has aliased edges throughout. The co-directors don’t know how it happened (DP seems to no longer be available for info). Rest of footage is shot progressive scan and looks normal. I can’t seem to fix what I thought would be an interlacing problem: not with field-shifting filters or in After Effects. Jagged edges persist. Can this be fixed or do they reshoot? How do I post a still image of the affected video to this forum? Or do I post a link to the image uploaded to my website? Then you could see what I’m seeing.
Thanks people.
Richard Fomo
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2 Replies
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Richard,
You can post an image on your website and link to it here if you want others to take a look. What was the footage shot with? PD-150 in progressive mode? It sounds to me like the footage was shot in progressive, but not TRUE progressive. Some cameras (like the pd150 I believe) duplicate fields to create an artificial frame mode, thus droping your vertical resolution in half and creating jagged edges. Unfortunately, the only real fix is a reshoot unless you have a REALLY good way to do field interpolation.
-Ben
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Thanks Ben for the info about the quasi progressive mode of the PD-150. They actually used another Sony camera, the VX-2000. Same issue? But then I’m not sure why most of the footage looks OK and some doesn’t. What exactly could have changed? I have posted a still that illustrates the problem.
https://www.fomovideo.com/Temp_aliasing_problem.htm
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