Saturday, February 1, 2014

Re: [Avid-L2] Illeagal Levels on AMA'd QT from sequence that is legal?

 

When making a QT Ref, I have been burned too many times by weirdness (multiple codecs in the ref file, multiple bit/sample rate audio tracks, effects not rendering, etc.). To solve this, I always make a mixdown to the codec I want first. Then the ref points to exactly one media file for its video, and if I don't have a single file for the audio in my sequence, I mix that down as well.

Mixdowns save lives.


On Sun, Feb 2, 2014 at 12:38 AM, John Moore <bigfish@pacbell.net> wrote:
 

I just noticed an oddity on a series I'm doing.  I've had no QC issues from the network but I'm curious about something I found when I ama'd the final output file.  My workflow is an Avid Mac SNDX V 5.5.3.7. 1080i/59.94 project.  DNX 220 media.  I export a QT ref of my sequence which has an upper track Safe Color Limit Effect set to 16-235 and 422 checked.  Playing out the sequence everything is legal and triggers no 1% alarms with Tek Defaults.  The same is true when I digital cut to HDCam.  I use QT Pro to make a self contained QT in Avid DNX.  When I ama back to this file and manually set the field order to upper everything plays fine and color bars are dead on.  What I found was there are a few frames of a Sapphire Glow transition that trigger the alarms from the ama'd file.  The same frames are fine on tape and straight out of the sequence.  Given I exported a QT ref the media for these few frames is the render of the safe color limit.  At these sections the Red Channel goes too high when looking at the ama'd file.  Again sequence fine but the ama'd file is not.  I've had no complaints from the network.  I didn't get a chance to experiment yet but I will start by importing the file traditionally and see if the same error exists there.  I can't really see why when the color bars come back correct why these glows seem to gain a boost in the red channel to trigger the alarm.  These are soft glows not specular spikes like I see sometimes.  Curious if anybody has a thought on this.

Is there another method other than amaing back into Avid that I can use to check the essence of the QT file?
 
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net


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Posted by Video Geek Squad at 10:36 PM 0 comments

[Avid-L2] Illeagal Levels on AMA'd QT from sequence that is legal?

 

I just noticed an oddity on a series I'm doing.  I've had no QC issues from the network but I'm curious about something I found when I ama'd the final output file.  My workflow is an Avid Mac SNDX V 5.5.3.7. 1080i/59.94 project.  DNX 220 media.  I export a QT ref of my sequence which has an upper track Safe Color Limit Effect set to 16-235 and 422 checked.  Playing out the sequence everything is legal and triggers no 1% alarms with Tek Defaults.  The same is true when I digital cut to HDCam.  I use QT Pro to make a self contained QT in Avid DNX.  When I ama back to this file and manually set the field order to upper everything plays fine and color bars are dead on.  What I found was there are a few frames of a Sapphire Glow transition that trigger the alarms from the ama'd file.  The same frames are fine on tape and straight out of the sequence.  Given I exported a QT ref the media for these few frames is the render of the safe color limit.  At these sections the Red Channel goes too high when looking at the ama'd file.  Again sequence fine but the ama'd file is not.  I've had no complaints from the network.  I didn't get a chance to experiment yet but I will start by importing the file traditionally and see if the same error exists there.  I can't really see why when the color bars come back correct why these glows seem to gain a boost in the red channel to trigger the alarm.  These are soft glows not specular spikes like I see sometimes.  Curious if anybody has a thought on this.

Is there another method other than amaing back into Avid that I can use to check the essence of the QT file?
 
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net

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Posted by Video Geek Squad at 9:38 PM 0 comments

[Avid-L2] Re: Decklink Extreme problem

 

I just did a show with multi cam Arri Alexa that they converted the CODEX Neg to DNX 220X without a LUT. They added the LUT to the downconverts. The DIT gave me a 3D LUT that he liked better than the Standard Arri Raw Lut in Resolve. I didn't see much difference between the standard and the one he gave me but I used it to process the DNX220X and took that back into Avid. It worked well but I found they were very conservative in the shoot and I still had to pull the blacks way down and white up even after applying the LUT. It still looked good even with a Symphony Grade.

--- In Avid-L2@yahoogroups.com, <kenavid2@...> wrote:
>
> The C300/500 are a completely different league than DSLRs. I recently finished a feature doc shot with C300 in CLOG. Looks amazing! I graded that in DS with a custom LUT I built for that job. I'm looking forward to grading C-LOG in Resolve.
>

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Posted by Video Geek Squad at 5:48 PM 0 comments

Re: [Avid-L2] transcoding problem

 

Yeah, I've got it on a MacPro and an HPZ800 as well. But today, I'm all laptop.


Thanks though

Steve

On Feb 1, 2014, at 4:44 PM, Raj Rodrigues <raj.rodrigues@gmail.com> wrote:

 

FWIW, I 've never been able to run any version of Symphony on a MBP seamlessly. There's always something that nips it's head up and bites you in the ass. Not much help I know, but on a MacPro, it's a whole different story, much more stable.

Raj

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Posted by Video Geek Squad at 3:47 PM 0 comments

Re: [Avid-L2] transcoding problem

 

FWIW, I 've never been able to run any version of Symphony on a MBP seamlessly. There's always something that nips it's head up and bites you in the ass. Not much help I know, but on a MacPro, it's a whole different story, much more stable.

Raj


On Sat, Feb 1, 2014 at 6:06 PM, Steve Hullfish <steve4lists@veralith.com> wrote:
 

I'm in a new project with a clean, new user setting on a MacBookPro running Symphony option of 7.03.

I successfully AMA'd and then transcoded many files from a 5DMII and SOME files from a 5DMIII, but there are some longer files from the 5DMIII that will NOT transcode. MC crashes every time. As it was, I had to transcode all of the 5DMII files that WOULD work one at a time, actually turning MC OFF between each transcoded file! Brutal.

Anyway, on the same exact system with the same media, I opened Premiere CC, imported the problem files and then exported them using DNxHD 115 (same settings I was trying to transcode with in MC) and it worked perfectly. How can Premiere deal with DNxHD better than Avid?

Any idea what the issue might have been? I've never had this problem before. With many of the 5DMIII files, when they were still AMA, when I played through them, the source monitor would go completely green (corrupt media) and then the system would lock up. I'd relaunch, go back to the same clip and it would be fine. If I subclipped it and transcoded that ONE clip and then closed MC and then did the same thing to a new clip, it would be fine. But... one clip transcoded at a time. This with a NEW user and a bin with only a few clips in it.

Steve


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Posted by Video Geek Squad at 2:44 PM 0 comments

[Avid-L2] transcoding problem

 

I'm in a new project with a clean, new user setting on a MacBookPro running Symphony option of 7.03.

I successfully AMA'd and then transcoded many files from a 5DMII and SOME files from a 5DMIII, but there are some longer files from the 5DMIII that will NOT transcode. MC crashes every time. As it was, I had to transcode all of the 5DMII files that WOULD work one at a time, actually turning MC OFF between each transcoded file! Brutal.

Anyway, on the same exact system with the same media, I opened Premiere CC, imported the problem files and then exported them using DNxHD 115 (same settings I was trying to transcode with in MC) and it worked perfectly. How can Premiere deal with DNxHD better than Avid?

Any idea what the issue might have been? I've never had this problem before. With many of the 5DMIII files, when they were still AMA, when I played through them, the source monitor would go completely green (corrupt media) and then the system would lock up. I'd relaunch, go back to the same clip and it would be fine. If I subclipped it and transcoded that ONE clip and then closed MC and then did the same thing to a new clip, it would be fine. But... one clip transcoded at a time. This with a NEW user and a bin with only a few clips in it.

Steve

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Posted by Video Geek Squad at 12:06 PM 0 comments

Re: [Avid-L2] Avid on new Mac Pro

 

The minute it does, I'm going to blow my - tax refund. 


On Feb 1, 2014, at 8:13 AM, <kenavid2@glueedit.com> wrote:

 

Does this work?  Is anyone using this?

KEN

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Posted by Video Geek Squad at 11:11 AM 0 comments

[Avid-L2] Avid on new Mac Pro

 
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Posted by Video Geek Squad at 10:13 AM 0 comments

Re: [Avid-L2] Resolve on ISIS

 

We have issues with Resolve 9 (haven't loaded 10 yet) on Multiwrite drives (like unity) on Terrablock on PC only. Every shot hangs at the start the first time you play through the sequence. After that it works fine. And again, only Multiwrite and only on PC. The Multwirte drives are fine on Mac. So it's a network attached drive in Windows issue with Resolve.

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Posted by Video Geek Squad at 8:22 AM 0 comments

Re: [Avid-L2] Resolve on ISIS

 

Running in a Mac with terrablock no problem- but that's not Isis.

In all our macs we move the system onto an SSD in the 2nd optical slot, then put a 4-way software raid 0 in the regular drive slots- pretty dang fast, even if macs are only sata 3.

GH 
________________________
Greg Huson
Secret Headquarters, Inc
Greg (at) SecretHQ.com

On Feb 1, 2014, at 7:41 AM, "michaelammo" <mikeammo@aol.com> wrote:

 

Hello Everyone,

Anybody have experience using Resolve 10 on an ISIS system? Any success / struggle stories would be appreciated!

Also, looking for any suggestions on local storage preferences.

Thanks,

Michael H. Amundson
WGBH Boston

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Posted by Video Geek Squad at 8:13 AM 0 comments

[Avid-L2] Resolve on ISIS

 

Hello Everyone,

Anybody have experience using Resolve 10 on an ISIS system? Any success / struggle stories would be appreciated!

Also, looking for any suggestions on local storage preferences.

Thanks,

Michael H. Amundson
WGBH Boston

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Posted by Video Geek Squad at 7:41 AM 0 comments

[Avid-L2] RE: Decklink Extreme problem

 

The C300/500 are a completely different league than DSLRs.  I recently finished a feature doc shot with C300 in CLOG.  Looks amazing!  I graded that in DS with a custom LUT I built for that job.  I'm looking forward to grading C-LOG in Resolve.

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Posted by Video Geek Squad at 6:30 AM 0 comments

RE: [Avid-L2] MC7.0.3 crashes on export/mixdown

 

I found using the "repair sequences" console command helpful.  It does actually tell you the exact clip with the problem when you run it and then look in the console - assuming it finds the problem.

Andi

Andi Meek

Freelance Technical Operator

+44(0)7737088829

http://www.indepost.co.uk/index.html

uk.linkedin.com/pub/andrew-meek/57/230/553/


To: Avid-L2@yahoogroups.com
From: namyrb@gmail.com
Date: Fri, 31 Jan 2014 17:22:42 -0800
Subject: Re: [Avid-L2] MC7.0.3 crashes on export/mixdown

 

You would think it'd be in the console or something, but it's not.  In my case, because it was music, Avid could not playback over that corrupted section so I just checked around where it stopped playing.  Another way of doing it is to look at your export status bar.  See how far the completion bar gets before it crashes and apply that length ratio to your sequence to get an idea of the corrupt media's general area. From there it's kind of guess work.  Look for red render bars after render, heavy effects, etc.   


On Fri, Jan 31, 2014 at 2:52 PM, Dan McCabe <danlist@bestmail.us> wrote:
 

Is there a better system for detecting a corrupt file these days other than the old "divide and conquer"? 
 
 
On Thu, Jan 30, 2014, at 06:42 PM, namyrb wrote:
 
Got this same error a couple of days ago... After hours of trying to figure out which video file was corrupt it turned out to be corrupt music that needed to be deleted and batch imported. 

On Thursday, January 30, 2014, Bogdan Grigorescu <bogdan_grigorescu@yahoo.com> wrote:
 
 
I fought a similar issue (MC6.5.3 on ML10.7.5) - with this exact error - for quite a while.
In our case there were some corrupt CC renders.
Deleted the precomputes and re-rendering led to successful QT H264 export.

cheers,
BG
www.finale.tv
 
 
 
 
 



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Posted by Video Geek Squad at 4:08 AM 0 comments

Re: [Avid-L2] Re: Decklink Extreme problem

 

The C300/C500 can record XDCAM 422 50 Mbit/s .mxf files internally on the CF card and it is much easier to deal with them, picture quality is really nice without most of the problems of the DSLR H264 recordings, finishing and color correction works really well. The C500 can record up 4k@60p raw (theoretically up to 4k@120p) with the right external recorder, like Codex for example, can record 4k@30p with AJA Ki Pro Quad in different  Pro-Res formats.

f 

From: johnrobmoore <bigfish@pacbell.net>
Reply-To: <Avid-L2@yahoogroups.com>
Date: 2014. február 1., szombat 1:05
To: <Avid-L2@yahoogroups.com>
Subject: [Avid-L2] Re: Decklink Extreme problem

 

I haven't had much dealing with C300/500 material. Does the file format for these camera differ greatly from 5D/7D? 5Ds fall apart quickly when pushed in color correction. How do the C300s etc... improve this behavior. I'm thinking they record with less/better compression. I'll do some googling but any information points on this would be appreciated.

--- In Avid-L2@yahoogroups.com, <kenavid2@...> wrote:
>
> This series is C300 and C500 (not LOG). Yes, improved quality over Avid workflows.
>
> KEN
>

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Posted by Video Geek Squad at 1:16 AM 0 comments
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