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banding and blotchy


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#1 F Bulgarelli

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Posted 19 September 2010 - 07:33 PM

Hello

I'm seeing some banding and blotches when I compressed the Red footage. Some of it looks like rainbows on a wall and the faces are a bit blotchy.

We are working directly from the raw files, transcoding to pro-rez. We are using the MX, build 30. Never had this problem before.
Someone told me that I just needed to deinterlace the footage which we try.
Could this be due to underexposure? I even see it on the shadow area of a day exterior scene.

Any advice will be appreciated,

thanks

FB
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#2 Matthew Rogers

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Posted 03 October 2010 - 12:44 PM

Deinterlace? Do people not understand the difference between interlaced and progressive? What prores are you using? Have you tried ProRes 444? If it doesn't happen in ProRes 444, then it's the ProRes format compressing down to 8 bit, which doesn't surprise me because I've seen banding in prores before that's not in the RAW file.
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#3 Adrian Sierkowski

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Posted 03 October 2010 - 01:50 PM

The rainbows are probably moire pattern from too fine of detail in your viewing format.
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