Saturday, September 24, 2016

Re: [Avid-L2] Today's QC Quote lets all get Crunky?

 

Alternative past tense for 'cranked', I would think.

synced == sunk

cranked == crunk

Cheers,

--Michael

On 2016-09-24 9:48 AM, John Moore bigfish@pacbell.net [Avid-L2] wrote:
> So what the hell is "Crunk"? I'm guessing crushed and something
> else. I've never heard this term in my life. Is it really a thing?

__._,_.___

Posted by: Michael Brockington <mbrock321@gmail.com>
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this is the Avid-L2

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__,_._,___

Re: [Avid-L2] Today's QC Quote lets all get Crunky?

 

I'm presently struggling with archival footage where clearly nobody thought about how the quality would hold up in the future, so I understand the need to  maintain some real standards, but what you are going through sounds rather insane.  If you have to go to such extremes to even see the artifact, its not an artifact.  Enforcement of this stuff is rather selective too...I once called the QC person at one of the big three networks, on a tight turnaround show where if a shot got flagged it would have big consequences.  I was offering to send a file over for them to pre-judge before I used it and he cut me off and said "This is a pointless exercise...do you think its fit for broadcast?"  I said "Sure."  He said "Good enough for me" and hung up.  Yes it happened and it aired in prime time.


J

On Saturday, September 24, 2016, bigfish@pacbell.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 

Well my Post Supervisor just in formed me "Crunk" = Crazy Drunk.  Now I of all people should understand that term but for the life of me I don't get what they mean by it other than jacking levels to a ridiculous level on setup and gain I suppose.

Don't get me started on who I think is Crazy Drunk for even noting these inconsequential so called artifacts.



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

I am battling some of the most over the top QC notes in a long time.  If I blow up the screen 200 percent I can sort of find these flashing "artifacts" QC claims are 3s.  They are at best 1s and are virtually invisible on anything but a hyper tweaked in contrast etc monitor.  I am really starting to believe they are running my SDR, standard dynamic range, file into an HDR monitor to that it is completely blown out to see these supposed artifacts.  Here's the quote of the day from QC

"If you still wanted help locating these stuck pixels, get your levels "crunk and look...."

So what the hell is "Crunk"?  I'm guessing crushed and something else.  I've never heard this term in my life.  Is it really a thing?
 
John Moore Barking Trout Productions Studio City, CA bigfish@...

__._,_.___

Posted by: John Pale <pale.edit@gmail.com>
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (3)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___

[Avid-L2] Re: Today's QC Quote lets all get Crunky?

 

Well my Post Supervisor just in formed me "Crunk" = Crazy Drunk.  Now I of all people should understand that term but for the life of me I don't get what they mean by it other than jacking levels to a ridiculous level on setup and gain I suppose.

Don't get me started on who I think is Crazy Drunk for even noting these inconsequential so called artifacts.



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

I am battling some of the most over the top QC notes in a long time.  If I blow up the screen 200 percent I can sort of find these flashing "artifacts" QC claims are 3s.  They are at best 1s and are virtually invisible on anything but a hyper tweaked in contrast etc monitor.  I am really starting to believe they are running my SDR, standard dynamic range, file into an HDR monitor to that it is completely blown out to see these supposed artifacts.  Here's the quote of the day from QC

"If you still wanted help locating these stuck pixels, get your levels "crunk and look...."

So what the hell is "Crunk"?  I'm guessing crushed and something else.  I've never heard this term in my life.  Is it really a thing?
 
John Moore Barking Trout Productions Studio City, CA bigfish@...

__._,_.___

Posted by: bigfish@pacbell.net
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (2)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___

[Avid-L2] Re: Safe Color Limit Inconsistent Black Level between systems?

 

I completely understand that aspect of this now but the new news was that even setting the composite Luma L to 0 generates a very slightly elevated black level.  The same thing happens when setting RGB Gamut L to 16, which is what I always do.  Now on my home system I find I have to set it to 15.  I switched the output Hardware to 1920x1080 from the project native 4096x2160 but that didn't change the behavior regarding the slightly elevated black level.  This would never be noticed in normal program but only in 0mV black.

To me this is math plan and simple 0mV is 16 in 8 bit, 64 in 10 bit but Safe Color Limit won't display in 10 bit values. 

The classic issue you mention of making a new safe color limit effect appears to relate to the fact that when I hook up my NitrisDX a value of 7.5 in the composite Luma L doesn't raise the black level other than this slight elevation in black.  If I use the same effect while hooked to my DNxIO the output levels black is lifted way high.  Clearly the type of hardware has an effect on how Safe Color Limit effects the signal.  It's like there is some secret handshake with the NitrisDX, and perhaps other Avid IO hardware, that understand about 7.5 ire being added to composite setup.  3rd party IO does not have the same handshake and jacks up the black.

This last part I feel is a separate issue from the slightly elevated black which I have just discovered and I can't believe I've never noticed this before so I believe there is something that has changed in Avid or perhaps there is something subtle on my home system that is causing this.  Given the subtle black elevation is seen on both NitrisDX and DNxIO I am even more curious as to what the cause is.  I will check my work system to see if I can see the same behavior.



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

I alway wind the composite limits right out as we never have to meet composite gamut.
But I have seen odd black level behaviour. It normally seems to be an old safe color limiter effect carried across from another older system.
Replacing it with one locally generated from scratch seems to work.

Pat from his mobile.

__._,_.___

Posted by: bigfish@pacbell.net
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (6)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___

[Avid-L2] Today's QC Quote lets all get Crunky?

 

I am battling some of the most over the top QC notes in a long time.  If I blow up the screen 200 percent I can sort of find these flashing "artifacts" QC claims are 3s.  They are at best 1s and are virtually invisible on anything but a hyper tweaked in contrast etc monitor.  I am really starting to believe they are running my SDR, standard dynamic range, file into an HDR monitor to that it is completely blown out to see these supposed artifacts.  Here's the quote of the day from QC

"If you still wanted help locating these stuck pixels, get your levels "crunk and look...."

So what the hell is "Crunk"?  I'm guessing crushed and something else.  I've never heard this term in my life.  Is it really a thing?
 
John Moore Barking Trout Productions Studio City, CA bigfish@pacbell.net

__._,_.___

Posted by: John Moore <bigfish@pacbell.net>
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (1)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___

[Avid-L2] Re: Safe Color Limit Inconsistent Black Level between systems?

 

I alway wind the composite limits right out as we never have to meet composite gamut.
But I have seen odd black level behaviour. It normally seems to be an old safe color limiter effect carried across from another older system.
Replacing it with one locally generated from scratch seems to work.

Pat from his mobile.

__._,_.___

Posted by: <pat@horridge.org.uk>
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (5)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___

Friday, September 23, 2016

Re: [Avid-L2] Safe Color Limit Inconsistent Black Level between systems?

 

So I got a QC report back saying there was slightly elevated blacks during black fades and under credits.  I have my usual Safe Color limit set at RGB 16-235 and the composite now set to 0.  I have now found that having composite Lum L set to 0 generates slightly elevated black and also setting the RGB Gamut L to 16 generates the same elevated blacks.  WTF?  If I set composite Luma L to -.1 no black elevation and similarly if I set RGB Gamut L to 15 it stops the elevated black.  I've been setting 16-235 for my safe color limit for ever and never really paid attention to the composite Luma L until I saw the 7.5 setting cause really elevated black when using the DNxIO.  So why the hell is this off now?

With all this in mind I did switch my home system back to the NitrisDX to see if the DNxIO was behind the slightly elevated black but F me skipping the Nitris DX is showing the same slightly elevated blacks.  The only difference is that with the NitrisDx hooked up the composite Luma L slightly elevates the blacks when it's set to 7.5 but if I set it to 7.4 the black is pefect 0mV.  So the difference between NitrisDX and DNxIO and more than likely any other BM card as well as other 3rd party IO is clearly about the Composite Luma L 7.5 setup parameter.

I can't imagine I've been missing this slightly elevated black for the last 4 to 5 years when safe color became necessary for file based delivery.  I will have to run the same tests back on my NitrisDX at work.  It has the same Mac OS and MC 8.5.2 whereas my home system is 8.5.3.  I have nothing like Perian installed that I know of that would cause this.  I see the elevated blacks on my scope and QC saw it on the file I generated so it's there.  Anybody else see this behavior?



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

Many years back I had the same issue when I used a saved safe color from a 59.94I or SD project in a PAL project.  In that case it was all Avid hardware of the NitrisDX variety.  So while it seems to be hardware related in my current case and yours going back about 6 or so years I had the same sort of behavior with all Avid hardware.  Maybe something is different now. 

It's curious how the hardware effects an internal level render this way.  It seems as if there is some aspect of the old safe color legalizer hardware function on the old meridian Symphonys.


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

Hello John,

This is a bug we have tracked at my facility as well, between Nitris DX systems and Aja Kona 3 I/O cards.  It seems to be a bug relating to previous versions of the safe color effect, and how it is interpreted differently on systems with different i/o hardware.

For our promo work we routinely do color and final output in the AVID, with a safe color limiter as a top layer and we keep one handy in a bin, with the settings we like.

When we upgraded to Media Composer 8.5.3 we noticed the issue, only using the older saved Safe Color Limiter effect.  We replaced it with a new version made from the MC 8.5.3 effects pallet, and the systems are once again consistent, between Aja i/o and Nitris DX.

Dave Hogan
Burbank, CA


On Tuesday, September 20, 2016 12:13 AM, "John Moore bigfish@... [Avid-L2]" <Avid-L2@yahoogroups.com> wrote:


 
At work I'm on a MacPro mid 2010 tower upgraded to 12 core OS 10.9.5 running MC 8.5.2 with a NitrisDX.  I have a safe color limit on a sequence set to 422 composite -20, 110 default and RGB limit set 16 to 235.  I rendered this fine on the work system.

When I take the sequence home I'm on a mid 2012 MacPro 12 Core now running a DNxIO MC 8.5.3 OS 10.9.5.  I find that when I unrender the safe color limit the black level is elevated.  If I drop on a new safe color and use the same settings all is correct with no black level elevation.

Finally after comparing the two effects I noticed the Luma L parameter is 7.5 on the safe color that elevates the black when it becomes unrendered and the new safe color has a Luma L value of 0.  Now I've never even paid attention to those parameters before but I have seen a similar issues over the years and had never put my finger on it.  The first time it happened it was when I applied the safe color limit from an 29.97 project in a Pal Project.  I had figured it had something to do with a lack of setup in Pal and just rebuilt the effect.  Since then I have seen this behavior from time to time.

Given my system is virtually identical to my work system the only difference is at work it's NitrisDX and at home now DNxIO.  I also have a NitrisDX on my home system but have switched to the DNxIO for this 4 K PIxel hunt I'm in the middle of.  Before I had a Black Magic SDSDI card and I had occasionally seen this same issue. 

Is there something in the Avid IO hardware that would account for a different interpretation of the Luma L parameter in the safe color limit effect?  Given I never knowingly set Luma L to 7.5 I figure it must be a by product of the video output settings composite output where you can choose to add 7.5 ire on composite setup.  Could that setting effect the default value assigned to Luma L in the Safe color effect?

Given the video output doesn't have the analogue output adjustments in Avid's video output when running 3rd party IO I'm beginning to think that having Luma L at 7.5 on a Nitris DX system gets interpreted as no black level elevation whereas the same setting when using BM and perhaps other manufactures IO hardware results in elevated black.  Does this make any sense?  I can't see any other explanation as to how it rendered to correct black levels on the NitrisDX system but doesn't render to correct black levels on the DNxIO system.  At least I finally found the parameter that is causing it bit how come it doesn't cause elevated blacks when rendered on the Nitris DX system the sequence was created on?
 
John Moore Barking Trout Productions Studio City, CA bigfish@...


__._,_.___

Posted by: bigfish@pacbell.net
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (4)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___

RE: [Avid-L2] Issues with AVCHD100 files

 

Good thing to check.  Thanks for the idea.  It's 1080p 23.98 footage but I know there's a little lack of discipline.

 

Dave Spraker

 

Principal, spraker.tv

 

dave@spraker.tv
(503) 897-0250

 

From: John Pale [mailto:pale.edit@gmail.com]
Sent: Friday, September 23, 2016 12:50 PM
To: Avid-L2@yahoogroups.com; Dave Spraker <avid@spraker.tv>
Cc: Dom Q. Silverio <domqsilverio@gmail.com>; johnrobmoore <bigfish@pacbell.net>
Subject: Re: [Avid-L2] Issues with AVCHD100 files

 

What frame rate?  I've worked on systems that would play 23,976 just fine but choke on higher Frame rates.  Also would be a problem if the footage did not match project frame rate and required a motion adapter

On Friday, September 23, 2016, 'Dave Spraker' avid@spraker.tv [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

Thanks to everyone who responded.  No Avid hardware so no hardware acceleration.

 

I didn't see the system working before, but they swear it worked fine and then something changed.

 

The mystery continues…

 

Dave Spraker

 

Principal, spraker.tv

 

dave@spraker.tv
(503) 897-0250

 

From: Avid-L2@yahoogroups.com [mailto:Avid-L2@yahoogroups.com]
Sent: Thursday, September 22, 2016 6:45 PM
To: avid-l2 <Avid-L2@yahoogroups.com>; johnrobmoore <bigfish@pacbell.net>
Subject: Re: [Avid-L2] Issues with AVCHD100 files

 

 

If I remember correctly, the early versions would have a sticker in the back indicating the board is installed. Later models would have "AVC-Intra" printed in front, top right.

https://www.bhphotovideo.com/images/images2000x2000/Avid_9900_65256_00_STAND_ALONE_HARDWARE_KIT_851230.jpg


Dom Q. Silverio

 

On Thu, Sep 22, 2016 at 9:40 PM, bigfish@pacbell.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:



I purchased my NitrisDX in 2012 but never new the AVC board was anything but an option.  Is that something that appears in the Hardware Tab to check?



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

Avid recommends at least an 8 core to play a single stream of AVC-I.

The Nitris DX has a hardware based AVC-I codec installed allowing better performance with lower spec computers. The board was optional in early versions of DX. I think it became standard later on.


Dom Q. Silverio

 

On Thu, Sep 22, 2016 at 8:18 PM, Shane Ross shanerosseditor@... [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

Trying to play back AMA linked AVCHD files?  Yeah, no wonder you are having problems. That is a highly complex format that needs a lot of resources to play back smoothly. Resources Avid isn't designed to utilize, like Cuda acceleration via an Nvidia graphics card, and tons of RAM. Even with apps that do utilize those, like Premiere Pro and Resolve, playback might still skip. It takes a lot to decode that on the fly 

 

So transcode the footage in Avid. Always best. 

Shane

 

Sent from my pocket calculator. 


On Sep 22, 2016, at 2:41 PM, 'Dave Spraker' avid@... [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

L'ers –

 

Helping a customer who is having trouble playing back AVCHD 100 files shot on a Panasonic Pro camera.  It's my first exposure to the system but supposedly it used to work fine and now doesn't.

 

System specs: 3-4 year old HP z420, Win 7, 16GB RAM, Media Composer 7.0.6, G-Tech SAS connected storage (about 140 MB/sec) and an AJA Kona LHi

 

What I know:

 

            - there is a 942-memory training error that come up during boot, but that has supposedly been there for a while, trying to swap out half the RAM (two pairs of two different 4GB HP revs)

 

            - when playing the AVCHD 100 footage in a sequence the video will stutter and freeze, the audio will stutter and repeat pieces short phrases

           

            - watching the system resources it uses about 8GB of RAM but will go all the way up 100% of CPU

 

            - transcode the footage to DNxHD 115 and it plays fine

 

            - did the usual new project/user/bin/sequence check

 

When schedules allow I will reload the OS and start from scratch.  But any ideas/suggestions in the meantime are appreciated.

 

Thanx,

 

Dave Spraker

 

Principal, spraker.tv

Shared Storage Solutions  |  Consulting  |  Sports Audio

www.spraker.tv

 

1100 SE 12th Ave., Suite #312

Portland, OR 97214

 

dave@...
(503) 897-0250

 

 

 

 

 

__._,_.___

Posted by: "Dave Spraker" <avid@spraker.tv>
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (9)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___

Re: [Avid-L2] Issues with AVCHD100 files

 

What frame rate?  I've worked on systems that would play 23,976 just fine but choke on higher Frame rates.  Also would be a problem if the footage did not match project frame rate and required a motion adapter

On Friday, September 23, 2016, 'Dave Spraker' avid@spraker.tv [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

Thanks to everyone who responded.  No Avid hardware so no hardware acceleration.

 

I didn't see the system working before, but they swear it worked fine and then something changed.

 

The mystery continues…

 

Dave Spraker

 

Principal, spraker.tv

 

dave@spraker.tv
(503) 897-0250

 

From: Avid-L2@yahoogroups.com [mailto:Avid-L2@yahoogroups.com]
Sent: Thursday, September 22, 2016 6:45 PM
To: avid-l2 <Avid-L2@yahoogroups.com>; johnrobmoore <bigfish@pacbell.net>
Subject: Re: [Avid-L2] Issues with AVCHD100 files

 

 

If I remember correctly, the early versions would have a sticker in the back indicating the board is installed. Later models would have "AVC-Intra" printed in front, top right.

https://www.bhphotovideo.com/images/images2000x2000/Avid_9900_65256_00_STAND_ALONE_HARDWARE_KIT_851230.jpg


Dom Q. Silverio

 

On Thu, Sep 22, 2016 at 9:40 PM, bigfish@pacbell.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:



I purchased my NitrisDX in 2012 but never new the AVC board was anything but an option.  Is that something that appears in the Hardware Tab to check?



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

Avid recommends at least an 8 core to play a single stream of AVC-I.

The Nitris DX has a hardware based AVC-I codec installed allowing better performance with lower spec computers. The board was optional in early versions of DX. I think it became standard later on.


Dom Q. Silverio

 

On Thu, Sep 22, 2016 at 8:18 PM, Shane Ross shanerosseditor@... [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

Trying to play back AMA linked AVCHD files?  Yeah, no wonder you are having problems. That is a highly complex format that needs a lot of resources to play back smoothly. Resources Avid isn't designed to utilize, like Cuda acceleration via an Nvidia graphics card, and tons of RAM. Even with apps that do utilize those, like Premiere Pro and Resolve, playback might still skip. It takes a lot to decode that on the fly 

 

So transcode the footage in Avid. Always best. 

Shane

 

Sent from my pocket calculator. 


On Sep 22, 2016, at 2:41 PM, 'Dave Spraker' avid@... [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

L'ers –

 

Helping a customer who is having trouble playing back AVCHD 100 files shot on a Panasonic Pro camera.  It's my first exposure to the system but supposedly it used to work fine and now doesn't.

 

System specs: 3-4 year old HP z420, Win 7, 16GB RAM, Media Composer 7.0.6, G-Tech SAS connected storage (about 140 MB/sec) and an AJA Kona LHi

 

What I know:

 

            - there is a 942-memory training error that come up during boot, but that has supposedly been there for a while, trying to swap out half the RAM (two pairs of two different 4GB HP revs)

 

            - when playing the AVCHD 100 footage in a sequence the video will stutter and freeze, the audio will stutter and repeat pieces short phrases

           

            - watching the system resources it uses about 8GB of RAM but will go all the way up 100% of CPU

 

            - transcode the footage to DNxHD 115 and it plays fine

 

            - did the usual new project/user/bin/sequence check

 

When schedules allow I will reload the OS and start from scratch.  But any ideas/suggestions in the meantime are appreciated.

 

Thanx,

 

Dave Spraker

 

Principal, spraker.tv

Shared Storage Solutions  |  Consulting  |  Sports Audio

www.spraker.tv

 

1100 SE 12th Ave., Suite #312

Portland, OR 97214

 

dave@...
(503) 897-0250

 

 

 

 

 

__._,_.___

Posted by: John Pale <pale.edit@gmail.com>
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (8)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

this is the Avid-L2

.

__,_._,___
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