Latest post Wed, May 21 2014 12:25 PM by nbhbf. 7 replies.
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  • Wed, May 21 2014 11:25 AM

    • nbhbf
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    MC7 Prores import and AS-II export issue

    Hi, I have a programme master file saved as ProresHQ (exported from FCP7), I want to import it to Avid MC7 so I can then use Media Composers 'AMA Export File' option to create an AS-II file file delivery, the UK HD file delivery standard.

    My problem is that if I convert the Prores on import to AVCintra 100 or DNxHD 185x, the levels are affected, blacks rise and whites drop and chroma drops too, easily seen from the color bars on the clip I'm importing. The effect is the same with AVCintra 100 or DNxHD 185x, so consistent at least.  Since this is an online I need to keep the final levels that are in the master ProresHQ file.

    I don't understand why levels would shift. I'm trans-coding the file during import, is that a wrong thing to do? 
    Or am I missing an import setting in MC that will keep the levels?

    I have tried taking in the Prores file as Quicktime using AMA Linking, which keeps the levels accurate but I get a fail on the AS-II Export, where both AVCintra 100 or DNxHD 185x work fine for the export.

    Cutting on a 6 Core Mac Pro with OS X 10.9.3, Avid Media Composer 7.0.3
    It's been years since I used AVID. Help!

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  • Wed, May 21 2014 11:42 AM In reply to

    • mjolnarn
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    Re: MC7 Prores import and AS-II export issue

    After having ama linked you want to consolidate the file, will bring it in as mxf and keep the origin levels, Avid can handle APR native

    Mac: 17" Macbook Pro i7 2,66 ghz with 8Gb Ram, 500gb 7200rpm drive___ PC_NEW Win10 Pro Mbo Asus Rampage IV Black CPU Ivy Bridge-E 4960X ( = 12 x 4... [view my complete system specs]

    Tomas 

     

  • Wed, May 21 2014 11:52 AM In reply to

    Re: MC7 Prores import and AS-II export issue

    There is a very serious bug in Vers 7.03/7.04/8.00 that changes the levels of a Prores 444 file in MC.

    What you are seeing may be caused by this:

    http://community.avid.com/forums/p/126206/722501.aspx#722501

    Try going back to MC 7.02 or earlier which does not have this bug.

    Symphony 7.06 OS 10.9.5 QT 7.6.3 Mac Pro 2x2.66 6-core 32GB Ram Aja Kona 3. MC 7.0.6 OS 10.9.5 Mac Pro 5.1 2x2.97 6-core 14GB ram Aja I/O express, Apple... [view my complete system specs]
  • Wed, May 21 2014 11:56 AM In reply to

    • nbhbf
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    Re: MC7 Prores import and AS-II export issue

    Thanks for the reply.  How do I go back to 7.02?  Is it available for download?

    Would another option be to export the Master from FCP7 as AVCintra100?  Its not a native codec to FCP but Im sure I could buy it.

    Neal

  • Wed, May 21 2014 11:59 AM In reply to

    • nbhbf
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    Re: MC7 Prores import and AS-II export issue

    mjolnarn:

    After having ama linked you want to consolidate the file, will bring it in as mxf and keep the origin levels, Avid can handle APR native

    Good suggestion, sounds like the correct work flow.  I've just tried AMA linking, then consolidating/trans-coding to AVCintra100. But the error I get when exporting with the QT file appeared during trans-coding: 'Exception: Failed to get the sample size from the AMA Plug-in' Any thoughts?

  • Wed, May 21 2014 11:59 AM In reply to

    Re: MC7 Prores import and AS-II export issue

    nbhbf:
    I'm trans-coding the file during import, is that a wrong thing to do? 

    This will truncate the bit depth of the imported file to 8 bit.*

    Better to import into the same codec as Tomas suggests.

    This is my preferred workflow, and before the bug mainatined levels and bit depth.

    AMA'ing is the other route.

    (*And do not change codecs when exporting for the same reason.)

     

    Symphony 7.06 OS 10.9.5 QT 7.6.3 Mac Pro 2x2.66 6-core 32GB Ram Aja Kona 3. MC 7.0.6 OS 10.9.5 Mac Pro 5.1 2x2.97 6-core 14GB ram Aja I/O express, Apple... [view my complete system specs]
  • Wed, May 21 2014 12:07 PM In reply to

    • mjolnarn
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    Re: MC7 Prores import and AS-II export issue

    nbhbf:

    mjolnarn:

    After having ama linked you want to consolidate the file, will bring it in as mxf and keep the origin levels, Avid can handle APR native

    Good suggestion, sounds like the correct work flow.  I've just tried AMA linking, then consolidating/trans-coding to AVCintra100. But the error I get when exporting with the QT file appeared during trans-coding: 'Exception: Failed to get the sample size from the AMA Plug-in' Any thoughts?

    It´s either or so not Consolidating / Transcoding

    Consolidating will bring it in as the same codec as alreday described

    There is no codec settings when doing this

     

    Mac: 17" Macbook Pro i7 2,66 ghz with 8Gb Ram, 500gb 7200rpm drive___ PC_NEW Win10 Pro Mbo Asus Rampage IV Black CPU Ivy Bridge-E 4960X ( = 12 x 4... [view my complete system specs]

    Tomas 

     

  • Wed, May 21 2014 12:25 PM In reply to

    • nbhbf
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    Re: MC7 Prores import and AS-II export issue

    Found a solution, not entirly sure why this works:

    I sub clipped the AMA linked Prores QT, selecting video only and transcoded that to AVCintra100, the levels remained same as source, perfect.  I then pasted the audio back on from one of my transcode imports.  Just done an export test as AS-II, no problems. 

    Could be a handy workaround for people facing this level shift problem.

     

    Thanks for your suggestions,
    Neal

     

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