Thursday, October 27, 2016

RE: [Avid-L2] SAS Full/legal Exports 8.5

 

The bottom line for me is I deliver all files at legal, 709 levels.  That is what all the networks I deliver to seem to want.  I have had no problems with that.  As per a past thread where Marianna involved one of the Avid QT experts the litmus test for me is to ama link back to the final file and view it on my scope.  I make sure that there is no source setting scaling going on and that is an indication of the actual Video Essence level as per the thread I mentioned.

I have however experienced issues going to Adobe Media Encoder where it required me to export a QT ref file as Full Range in order for it to process a file to XDCam50 at legal levels.  Given the QT ref file is referencing media that is at legal, 709, level the only thing I can think the export setting to full range does is set a metadata flag.  Apparently this flag has an effect on how AME handles a QT ref.  At least how it handles a QT ref going to and XDCam50 file. 

In the end I always ama back and check to see what the actual video essence is.  Even when a project for NBC requested Full Range I found that they were confused and that when I sent them what I knew was Legal, 709, video following their export settings, which they claimed were for RGB Full Range it passed their QC.  Had they truly needed Full Range my file would not have been accepted so they were also confused.



---In Avid-L2@yahoogroups.com, <avid-l@...> wrote :

 

But how does that work… I found that with prores whether I export at legal or full the actual file seems to be the same and if I AMA back in avid it comes back as video levels and not full!

 

N

From: Mark Spano [mailto:cutandcover@...]
Sent: 26 October 2016 14:36
To: Avid-L2@yahoogroups.com; David Dodson <davaldod@...>
Cc: Roger Shufflebottom <rogershuff@...>; Nigel Gourley <avid-l@...>
Subject: Re: [Avid-L2] SAS Full/legal Exports 8.5

 

I solved this problem by ONLY using full levels for every SAS export except in cases where someone explicitly wants 709 (like Extreme Reach, for example). Anything I ever export is a mixdown, then SAS at full levels. Life is good and easy.

 

FYI - the Extreme Reach story: they supposedly take ProRes, but if you export SAS from a ProRes mixdown, it gets kicked back for illegal levels. So I mixdown to DNxHD 175 and then bounce out SAS at 709 and everyone's happy.

 

 

 

On Wed, Oct 26, 2016 at 9:32 AM, David Dodson davaldod@... [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

Use Media Encoder. Terrific. Sounds good. But what do you export out of the Avid to use in Media Encoder? In other words, let's say I'm cutting a movie that's been transcoded to DNxHD 175. So in order to maintain some consistency in the intended levels, do I do the "mixdown-to-ProRes" trick, export SAS, and then use the result in Media Encoder? Or do I simply export the DNxHD 175 SAS and use that in Media Encoder? Or do I just indulge in the ritual sacrifice of a chicken and invoke the name of Beelzebub himself and hope that my levels come across the way I want? Because it seems like the third option is the only way this crap seems to work, especially given the amount of confusion seen even here, on a list with some of the most powerful of power users.

 

Very frustrating.

 

 

 

David Dodson

 

 

 

On Oct 26, 2016, at 5:45 AM, Roger Shufflebottom rogershuff@... [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

 

If you can find the answer, I owe you a virtual beer. Try encoding in Adobe Media Encoder - both legal and full come out as full. 

 

With Best Wishes, Roger Shufflebottom +44 7973 543 660

 


From: "'Nigel Gourley' avid-l@... [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Avid-L2@yahoogroups.com 
Sent: Wednesday, 26 October 2016, 12:52
Subject: [Avid-L2] SAS Full/legal Exports 8.5

 

 

Hi there

 

I know this has been covered a lot but still unexpected result..

 

If we do a Prores mixdown and then a SAS export – whether it's full range or keep legal the result looks the same in QT player and also if you AMA it there is no transform on it. It still comes back into avid legal even if exported full..

 

My understanding was the full or legal was just a flag in the QT movie… so the question is where can we see the setting of this flag and can we change it externally? It doesn't appear in movie properties in QT

 

N

 

 

 

 

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