Saturday, October 22, 2016

[Avid-L2] Re: Solarization in QC

 

I'm assuming the poster meant 0.5mv below peak white so .if peak white is 700mv then he's seeing peak white at 699.5mv.


Pat from his mobile.

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Posted by: <pat@horridge.org.uk>
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Posted by Video Geek Squad at 1:48 AM 0 comments

Friday, October 21, 2016

Re: [Avid-L2] Re: Solarization in QC

 

I'm also curious what scopes were used to be able to see 0.5mV on the Y/RGB scale

BG
www.finale.tv


From: "bigfish@pacbell.net [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Avid-L2@yahoogroups.com
Sent: Friday, October 21, 2016 1:08 PM
Subject: [Avid-L2] Re: Solarization in QC

 
When you say peak whites were about .5mV do you mean the peak value is 700.5mV on the scope?  I'm not saying that's the problem with the solarization but wanted to clarify your spec for Peak White and how it is defined.


---In Avid-L2@yahoogroups.com, <scottesmith1@...> wrote :

I'd like to hear some nerd explanations myself.  The program was shot on an Alexa in ProRes 4444, graded in Resolve, output ProRes 422HQ.  It was played out from Smoke to HDcamSR.  At no point was it reduced to 8 bit.  The peak whites were about .5mV, far below  clipping point.  Could the QC house view the material in a way that exaggerates any quantising flaws?

Thanks, Scott


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Posted by: Bogdan Grigorescu <bogdan_grigorescu@yahoo.com>
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Posted by Video Geek Squad at 1:31 PM 0 comments

[Avid-L2] Re: Solarization in QC

 

When you say peak whites were about .5mV do you mean the peak value is 700.5mV on the scope?  I'm not saying that's the problem with the solarization but wanted to clarify your spec for Peak White and how it is defined.



---In Avid-L2@yahoogroups.com, <scottesmith1@...> wrote :

I'd like to hear some nerd explanations myself.  The program was shot on an Alexa in ProRes 4444, graded in Resolve, output ProRes 422HQ.  It was played out from Smoke to HDcamSR.  At no point was it reduced to 8 bit.  The peak whites were about .5mV, far below  clipping point.  Could the QC house view the material in a way that exaggerates any quantising flaws?

Thanks, Scott

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Posted by: bigfish@pacbell.net
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Posted by Video Geek Squad at 1:08 PM 0 comments

[Avid-L2] Re: Solarization in QC

 

With that workflow the most likely issue would be the grading element.
Its possible the QC setup isn't right but unlikely as all content woukd show the issue not just yours.
Obviously the first step is to view the content of the tape and see if it is really there.

Pat from his mobile.

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Posted by: <pat@horridge.org.uk>
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Posted by Video Geek Squad at 3:05 AM 0 comments

Thursday, October 20, 2016

[Avid-L2] Re: Solarization in QC

 

I'd like to hear some nerd explanations myself.  The program was shot on an Alexa in ProRes 4444, graded in Resolve, output ProRes 422HQ.  It was played out from Smoke to HDcamSR.  At no point was it reduced to 8 bit.  The peak whites were about .5mV, far below  clipping point.  Could the QC house view the material in a way that exaggerates any quantising flaws?

Thanks, Scott

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Posted by: Scott Smith <scottesmith1@gmail.com>
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Posted by Video Geek Squad at 3:55 AM 0 comments

Wednesday, October 19, 2016

[Avid-L2] Re: Solarization in QC

 

Could you get geeky on this and elaborate as to how shooting Log creates this issue?  Is it a by product of the reduction of actual detail to avoid clipping when shooting log that when stretched back out leads to greater level steps between values?  Obviously 8 bit has greater steps, that can lead to banding, than 10 bit but I've always felt the stretching out of the log signal adds noise, although I can't say I see the noise in normal video. 

So let's get our Nerd on.



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

Yes thats a quantising issue on the chroma.
Shooting Log can cause this in 8bit recording systems. Its one of the trade offs.

Pat from his mobile.

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Posted by: bigfish@pacbell.net
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Posted by Video Geek Squad at 1:50 PM 0 comments

Re: [Avid-L2] workflow for Sony A7s footage

 

Thanks Bouke.  Great app!

Lou Wirth Productions
500Tamal Plaza, Suite 522
Corte Madera, CA 94925
415-924-9411p


 





On Oct 19, 2016, at 1:19 AM, 'Edit B' bouke@editb.nl [Avid-L2] <Avid-L2@yahoogroups.com> wrote:



Lou,
You could try my Mp4 to QT.
Tested with Sony, it even retains the Sony timecode if that's important to you.
 
 
Bouke
 
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS  NIJMEGEN, the Netherlands
if you want to send me big files, use this:
www.videotoolshed.wetransfer.com
----- Original Message ----- 
Sent: Wednesday, October 19, 2016 12:57 AM
Subject: [Avid-L2] workflow for Sony A7s footage

 

I was wondering if anyone has a smooth workflow to input footage from Sony A7S cameras. I use Premiere to convert to Pro Res (Avid won't AMA or import originals) but its a slow process. I think Windows users have a converter they use. Anyone on Mac work with this footage much and have a system? I'm shooting on Thursday with this camera and will have a bunch of stuff to input.

thanks 
Lou
Lou Wirth Productions
500Tamal Plaza, Suite 522
Corte Madera, CA 94925
www.louwirth.com
415-924-9411p


Virus-free. www.avast.com


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Posted by: Lou Wirth <loutv@mindspring.com>
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Posted by Video Geek Squad at 8:56 AM 0 comments

Re: [Avid-L2] Re: workflow for Sony A7s footage

 

I think Resolve is happy with A7s footage now, including audio.


----

john heiser | senior video editor


p: 205.949.9513

o: 205.949.9494

o2ideas.com

 

600 university park place, suite 200

birmingham, alabama 35209


On Wed, Oct 19, 2016 at 8:08 AM, SurferRob@aol.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 

I suggest the Drastic Media Reactor Plug-in. They sell a $99 version that will support XAVCs only
The full version of Media Reactor allows Media Composer to link to just about anything and adds a number of AMA File > Export formats.

http://www.drastic.tv/productsmenu-56/mediareactorlist/mediareactor-workstation
http://www.drastic.tv/productsmenu-56/mediareactorlist/mediareactor-workstation
�
View on www.drastic.tv
Preview by Yahoo

 

Bob


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Posted by: John Heiser <jpheiser@gmail.com>
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this is the Avid-L2

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Posted by Video Geek Squad at 8:24 AM 0 comments

Re: [Avid-L2] Re: Solarization in QC

 


On Tue, Oct 18, 2016 at 6:10 AM, bruno@mansi.demon.co.uk [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
Don't often hear the term 'solarization' used in a QC report

For our younger viewers: Back in the olden days, "solarization" was an effect available in hardware DVEs, which intentionally induced heavy banding in the incoming video. It was cool at the time, and there are plug-ins to create that kind of effect today. In this case, the "effect" seems to be an artifact, and from the replies, it may be unavoidable.


----

john heiser | senior video editor


p: 205.949.9513

o: 205.949.9494

o2ideas.com

 

600 university park place, suite 200

birmingham, alabama 35209

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Posted by: John Heiser <jpheiser@gmail.com>
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Have you tried the highest rated email app?
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this is the Avid-L2

.

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Posted by Video Geek Squad at 7:18 AM 0 comments

[Avid-L2] Re: workflow for Sony A7s footage

 

I suggest the Drastic Media Reactor Plug-in. They sell a $99 version that will support XAVCs only
The full version of Media Reactor allows Media Composer to link to just about anything and adds a number of AMA File > Export formats.

http://www.drastic.tv/productsmenu-56/mediareactorlist/mediareactor-workstation

 

Bob

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Posted by: SurferRob@aol.com
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Have you tried the highest rated email app?
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this is the Avid-L2

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Posted by Video Geek Squad at 6:08 AM 0 comments

[Avid-L2] Re: workflow for Sony A7s footage

 

I would use Sorenson Squeeze Pro to convert directly to Avid media - and drop those files in a new MXF folder on the media drive.

Best regards
Keld

Sent from Kelds iPhone

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Posted by: Keld von Eyben <keld@voneyben.dk>
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Have you tried the highest rated email app?
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this is the Avid-L2

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Posted by Video Geek Squad at 3:25 AM 0 comments
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