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Levels and Color Shift
I am importing Uncompressed 10bit 1920×1080 23.98 footage into After Effects and rendering it out the same way. When I reimport that render into AE and drop it into the same composition, it does not look like the original file. The levels are off.
Notes:
– CS3 8.0.1
– I have removed all filters when doing this test and color management is off.
– I drop the levels filter onto the original file and the rendered file, just to see the histograms for both, and it appears that the levels for the rendered file have expanded.As you can guess, this is causing problems in FCP. The rendered file does not look like the original file. Any ideas?
Also, the footage did originate on the HVX200 (DVCPROHD 1080) but was rendered out of Final Touch in Uncompressed 10bit 1920×1080 23.98.
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3 Replies
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Render in the same codec you imported in
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Render in Final Touch in the same codec I imported in? If that is your suggestion, I will try it.
However, if you mean render in After Effects in the same codec I imported in, then as I mentioned in my post, I did just that.
Imported: Uncompressed 10 bit, 1920×1080, 23.98
Rendered: Uncompressed 10 bit, 1920×1080, 23.98Any other suggestions?
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i’m pretty new to the color management settings in ae, but not using the color management may be part of the problem…
enable ae’s color management in the project settings, try setting it to what you will be outputting (sounded like hdtv 16-235). now check the interpret footage settings for the footage, and see if the footage has a color profile. if it doesn’t, try setting it to what you think it would be (probably the same hdtv 16-235 as before). check the output module, and make sure the settings for color managment match the output, since your going back to hd, use the same hdtv 16-235 profile.
render and import, then check the color profile… it should match the original. then compare the footage.
if it doesn’t help, and the original footage didn’t have a color profile, try selecting a different profile for this footage. it may be that converting the dvcprohd footage has expanded the levels, but ae assumed the wrong levels…
Kevin Camp
Designer – KCPQ, KMYQ & KRCW
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