In past tests anytime I took video from dnx to prores or prores to dnx there was the QT like gamma error introduced. Unfortunatley I don't have V6 on the symphony. In a previous thread either here or the Symphony forum we compared notes and IIRC prores maintained it's level only if it was imported as prores. As soon as it was imported to dnx the level shift occurred. At the time it seemed like the age old QT gamma shift was somehow involve in the transcode issue.
--- In Avid-L2@yahoogroups.com, "Job ter Burg (L2B)" <Job_L2@...> wrote:
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> On 22 feb. 2012, at 21:50, John Moore wrote:
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> > I've asked this before but I'm trying to sort out what levels actually get to the ProRes HQ file.
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> If you use File-Export and then export a file using the ProRes codec in Quicktime, your levels will be completely off, and not adhere to any standard, in my experience. I found that I always ended up with a gamma shift.
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> In MC6-Mac, you can transcode your file to ProRes, then do a Same-As-Source export, and then the levels are fine.
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> Alternatively, I think you can export as Op1A MXF (through virtual XDCAM disk if you're on pre-v6), then use Sony Clip Browser to convert the MXF to MOV. That seemed to work for me last year when I needed to bring something to FCP, thanks Bouke for the tip).
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> J
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