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De-interlacing Issues
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Call me Amber, you can find my phone number on my website. I’ve seen and fixed this issue before.
David
David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
https://www.drwfilms.comPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Business & Marketing and Apple Final Cut Pro forums. Formerly host of the Apple Final Cut Basics, Indie Film & Documentary, and Film History & Appreciations forums.
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Unfortunately Vimeo has blocked your embed of the video file.
David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
https://www.drwfilms.comPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Business & Marketing and Apple Final Cut Pro forums. Formerly host of the Apple Final Cut Basics, Indie Film & Documentary, and Film History & Appreciations forums.
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[Amber Navarrete] “The fps is 29.97, the codec h264 and the field dominance being lower.”
This would be the first case of HD Lower-first I see.
All the HD standard are Upper.
Double check this and try checking the stuff as Upper.
rafael -
[Rafael Amador] “All the HD standard are Upper.
“Echo!!! Echoooo!!!!! Echoooooooo!!!!!!!!
David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
https://www.drwfilms.comPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Business & Marketing and Apple Final Cut Pro forums. Formerly host of the Apple Final Cut Basics, Indie Film & Documentary, and Film History & Appreciations forums.
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David – you are a genius! The process in compressor fixed the issue. Thanks again for your help – people like like you are priceless. Keep up the good work.
Thx,
Amber
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[Amber Navarrete] “David – you are a genius! The process in compressor fixed the issue. Thanks again for your help – people like like you are priceless. Keep up the good work.”
Even a broken clock is right twice a day Amber, but thanks for the feedback, it’s always good to hear when things work.
For the record, Amber’s problem stemmed from h.264 video without the proper field designation. The issue happens because certain cameras (Canon and Sony) that record interlaced HD with upper fields first, fail to write an entry in metadata line #21 on the files. The missing entry is thus misinterpreted in all QT enabled apps as progressive footage.
The solution is to use Compressor to transcode the h.264 files to ProRes and force to upper field dominant by turning Frame Controls on, and setting fields to upper from the default, which is normally set at “same as source.”
David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
https://www.drwfilms.comPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Business & Marketing and Apple Final Cut Pro forums. Formerly host of the Apple Final Cut Basics, Indie Film & Documentary, and Film History & Appreciations forums.
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The part that I don’t understand is that Amber said the original footage was 1280×720 which implies that it should be progressive (720p). It was then transcoded to 1280×720 ProRes. Was that a typo, and was this indeed originally 1080i footage? Or were fields incorrectly introduced during the Compressor transcode to produce a 1280×720 ProRes file with interlacing? I didn’t even know that was even possible… Please advise, thanks.
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Alan, I think you are right. 1280×720 should always be progressive. The clip says it is progressive but looks interlaced when there is a lot of action – frustrating. I thought I had solved the issue using a short clip to test. I converted all my clips last night and when I got in today I realized the ugly (interlace looking) lines are still there. Sucky. I think I’m screwed as I’ve tried about every combo possible in compressor.
Any other suggestions are welcomed but I think it is what it is.
– Amber
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[Alan Okey] “The part that I don’t understand is that Amber said the original footage was 1280×720 which implies that it should be progressive (720p).”
Good question Alan. I suspect that camera is one of those that shoots (720Psf) i.e. progressive segmented frames that are in reality interlaced video, but with two identical fields. And, that is misinterpreted both by machines and their human operators.
Does this make sense?
David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
https://www.drwfilms.comPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Business & Marketing and Apple Final Cut Pro forums. Formerly host of the Apple Final Cut Basics, Indie Film & Documentary, and Film History & Appreciations forums.
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[David Roth Weiss] “I suspect that camera is one of those that shoots (720Psf) i.e. progressive segmented frames”
Psf its doesn’t exist in 1280×720.
rafael
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