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Stepping on saturated red dv footage
Hi all, i have a large amount of stepping/aliasing occurring on some dv footage shot on a sony hdv camera. i have uploaded a grab of it and my capture and seq settings for you. I have been an avid online editor for years and never seen such stepping on raw native dvcam footage. Taking it in via component at 422 solves the problem but wanted to see if anyone can shed some light on this. I have seen various feeds about DV compression and 4.2.0 colour sampling but this is all fairly standard stuff and as an online editor i am familiar with dv compression and its usual artifacts. This is something quite different. is it due to camera setting, over saturation? or does fcp compress native dv? i don’t think it does? Is there any other codec that can be used for capturing native dv? many thanks for any advice. sam
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2 Replies
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[Sam Ash] “. I have seen various feeds about DV compression and 4.2.0 colour sampling but this is all fairly standard stuff and as an online editor i am familiar with dv compression and its usual artifacts. This is something quite different.”
No Sam, it’s not different, you are seeing the effects of DV compression and 4:2:0 color space. Go to Sequence>>Settings and change the compressor to ProRes 422, then re-render the sequence. That typically works, as it prevents any DV recompression.
If that does the trick, I recommend that you do that step after everything in the sequence is edited, otherwise you’ll probably be doing loads of rendering every time you move something on the timeline.
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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Sam, no FCP doesn’t compress native dv. You can capture the HDV as ProRes directly from camera….but DV is DV.
(Also, DV is 4:2:0 in Pal, 4:1:1 in NTSC; HDV is 4:2:0 in both.)I’m always curious about the following: are you making the judgements based on the Canvas? The outboard monitor? If you take it in via component and it’s fine, then yes, it’s likely the footage. If I were to bring it into MC, FCP or PPro, it’d all look the same.
Best,
Jeff G
Apple Master Trainer
Avid Cert. Instructor DS/MC
Avid & Color Videos Vasst.com
Compressor Essentials Lynda.com
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