Canon 7d 720 60fps Slow Mo Moire problems

[Jeff Greenberg]

Convert it to prores. Try this

From Martin Koch DVXuser

Try blurring the V channel via this filter:

Save the text file in s.Moire Buster.txt(/ Library / Application Support / Final Cut Pro System Support / Plugins. Restart Final Cut Pro and look for the filter in the “5D fixes” folder under the video filter menu.

[code: 1:298 aaea762] scriptid “Moire Buster” / / DO NOT LOCALIZE
filter “Moire Buster”;
group “5D fixes”;

/ / Blur the V channel in YUV to soften moire

InformationFlag ( “YUVaware”)
input blur_amount, “Blur”, slider, 30, 0, 60

code

float color space;
colorSpace = kFormatYUV219;

BlurChannel (src1, dest, 0/renderres, 1, 0, 0, 0, aspectof (dest));
BlurChannel (src1, dest, 0/renderres, 0, 1, 0, 0, aspectof (dest));
BlurChannel (src1, dest, 0/renderres, 0, 0, 1, 0, aspectof (dest));
BlurChannel (src1, dest, blur_amount / code renderres, 0, 0, 0, 1, aspectof (dest ));[/: 1:298 aaea762]

You might also try the free blend fields filter from here:
https://www.mattias.nu/plugins/
But you’ll need to nest the clip first (to force the processing pipeline)

Best,

Jeff G

Apple Master Trainer
Avid Cert. Instructor DS/MC
Avid & Color Videos Vasst.com
Compressor Essentials Lynda.com

[Tom Mason]

Thanks, but limited success on both of those fronts. The “blend fields” option works best – it dims the flickering down a bit but it’s still pretty noticeable. The Moire buster did very little, really just shifted the color in odd ways.
The difficult thing about this one I guess is that in the original video (and Pro Res version) the thin bands of light at the top of each stair are broken and go dark when they hit the gaps in the 7D sensor lines. So it looks like a dotted line that dances back and forth. And for it to be fixed, that dotted line either needs to be removed or filled in with a thicker continuous line. Any way to do this?

[Chris Wiggles]

DSLRs have moire problems. They’re not properly designed for video because they don’t take nyquist into account and are not a complete optically-designed system for shooting video resolutions. It’s not something you can get around entirely besides hiding it with blur, or putting a blurring filter in front or your lenses and re-shooting. Or using a different camera. Life is full of compromises, and this is one of those unfortunate compromises of using a DSLR for video.

There is no free lunch, sadly.

Regards,
Chris

[Christoph Müller]

Did you try the Marvels DSLR Moire filter for FCP from Jorgen Escher? Get it here: https://colorbyjorg.wordpress.com/2011/02/17/now-available-my-dslr-anti-moire-filter-for-fcp-free-download/

Let me know if this helped out.