Saturday, March 10, 2012

Re: [Avid-L2] AMA relink with Canon 5D files

 

If I was unclear- don't use import. Definitely AMA, the transcode.

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Greg Huson
Secret Headquarters, Inc
Greg (at) SecretHQ.com
www.SecretHQ.com
DigitalServicsStation.com

On Mar 10, 2012, at 9:58 AM, Greg Huson <Greg@SecretHQ.com> wrote:

> Oliver peters details his workflow - http://digitalfilms.wordpress.com/2010/10/09/easy-canon-5d-post-–-round-iii/
>
> But that doesn't solve your problem, exactly. Media Composer puts black at 16 and white at 235 to allow for too- dark and too-white. The 'Full' RGB of quicktime had always bugged me, but lately I'm not sure it isn't better for file based capture. That said, try a 1:1 HD RGB 444 project- see if it rescales the video when you transcode from canon. I don't think it does, but I'm not at the machine to try it. I suppose you'll be up-sampling the canon crap to 10 bit, but that shouldn't hurt it. Then make your tiff or dpx sequence from there. Do a little test project, needless to say.
>
> Another option would be to assemble the film in resolve lite or something- but that would probably require that you inserted time code into the qt before you AMA'd.
>
> Probably all stuff you've considered, but I'd be interested to know how you solve the problem. I just ran into some problems in SD this week by going back and forth between 601 and RGB (exacerbated a 'concatenating compression error') so this contrast thing has been on my mind.
>
> GH
> ________________________
> Greg Huson
> Secret Headquarters, Inc
> Greg (at) SecretHQ.com
> www.SecretHQ.com
> DigitalServicsStation.com
>
> On Mar 10, 2012, at 7:13 AM, "pierrehaberer" <ph@cineaste.org> wrote:
>
> > I've posted that question on the forum, but there are a lot of knowledgable people here who don't necessarily read them. So I'll add it here too.
> >
> > I'm reaching the end of a film cut on 5.5. Film was shot on Canon 5D MkII, then all the files came on two hard drives on which each card had been copied. We linked all those folders to bins (one bin per camera card) using AMA, then each clip was transcoded to DNxHD36, one bin at the time. Hundred hours of footage.
> >
> > Now the edit is done, and it's time to go back to the original camera files. It's my first film shot on a 5D, but I followed a similar workflow on several films before which were shot on XDCam and on which everything went smoothly: Link via AMA / Transcode to DNX36 / Edit / Relink final sequence to original XDCam / Export Tiff sequence for color grading on Colorus.
> >
> > But I just talked to the colorist and he said that AMA for 5D on Media Composer 5.5 is a bit flakey because it modifies the luma range of the picture. Fine, I can use MC6 just for the relink. I need to export tiff files that would have the full 000-255 range: what is the best way to do that when I relink my final sequence? Any settings (project settings, etc) I should be aware of? What settings for export?
> >
> > Thanks to all the AMA experts out there!
> > Pierre
> >
> >
>
> [Non-text portions of this message have been removed]
>
>

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