I don't really know what the purpose of all of the work you did was.
Canon 5D files are massively compressed to begin with (I know, I own this camera). Taking it to DNxHD is a good thing.
Why try to take it back to 1:1? That seems like a wasted step with a file that is heavily compressed to begin with. Just use the DNxHD files, especially if you used one of the higher ones... but I think the lowest one still has a better bit-rate than the original 5D files.
And if you use AMA, I thought you should be able to re-AMA them without the hand-picking you described. Or didn't you use AMA to bring them in and convert them? Stick with the 175 10bit file. That contains all of the information and bit depth you're ever going to get out of 5D files, which, I'm pretty sure are only 8bit to start with.
Steve Hullfish
contributor: www.provideocoalition.com
author: "The Art and Technique of Digital Color Correction"
On Dec 13, 2011, at 12:56 PM, mike cardeiro wrote:
> We are color correcting a spot shot on a 5D and edited in Avid and I am having difficulty preparing a qt of the sequence to take to the color correct session. Here are the steps I have taken.
>
> 1) When we got the footage I transcoded to DNX from the raw 5D files (yay Avid, this was super simple).
>
> 2) made a cut(then recut and recut again). it was approved so I duped the sequence replaced all the shots used in the sequence with the original non dnx files by opening the AMA volume and finding the original clips. (batch import did not work nice so I had to do it by hand (boo Avid))
>
> 3) exported a qt using Avid1:1x
>
> when I open the quicktime it is not crisp but a little fuzzy. I export the same sequence as dnx 175 10bit, that qt is not fuzzy but nice and crisp...but I would really like to be making an uncompressed qt not dnx as I am going to need to composite over these after the color correct and recompress as dnx for final output
>
> Am I missing something, it seems like 1:1 should be perfect.
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