Latest post Wed, Jul 29 2020 1:46 PM by j.liu@simplylive.tv. 5 replies.
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  • Wed, Jan 8 2020 2:49 AM

    DNxHD100 and AMT3

    Dear AMT Developers,

     

    I would like to create a DNxHD80 full raster file with AMT 3.14.

    But the resolution of the result MXF file is 1440x1080. But it should have a 1920x1080 resolution.

    I attached the MAD xml. 

    I can create this file without any issue with the old AMT2.0.

     

    Coudl you help where should be the problem?

     

    Thanks,

    Gyula Priskin 

    Colorfront

     

  • Wed, Jan 8 2020 7:33 AM In reply to

    Re: DNxHD100 and AMT3

    Not that I know the answer but 1440 is Thin Raster (TR) and a valid resolution. I would imagine there must be away to specify Thin Raster or full Raster.

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    Broadcast & Post Production Consultant / Trainer  Avid Certified Instructor VET (Retired Early 2022)

     

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  • Wed, Jan 8 2020 9:31 AM In reply to

    Re: DNxHD100 and AMT3

    I did not find it in the documentation how to define the "full raster".

    I tried to extract the MAD xml from a full raster DNx80 mxf file with AMT 3, but the resolution was 1440 in it.

     

    Thanks,

    Gyula

  • Wed, Jan 8 2020 12:35 PM In reply to

    Re: DNxHD100 and AMT3

    This document

    https://www.avid.com/static/resources/US/documents/dnxhd.pdf (page 9 and the notes on page 10)

    Shows DNxHD 80mbps as 1920x1080 *   and the note states its subsampled t0 1440

     

    So I'm guessing your full raster DNxHD 80 is actually subsampled to 1440

    HP Z840 3.1GHZ 20cores 128GB RAM M4000 GPU 1TB NVMe drive HP Z book 17 G2 2.7GHZ Quad core 32GB RAM Nvidia K3100M 1TB SSD drive ACI Moderator. I'm... [view my complete system specs]

     

    Broadcast & Post Production Consultant / Trainer  Avid Certified Instructor VET (Retired Early 2022)

     

    Still offering training and support for: QC/QAR Training - Understanding Digital Media - Advanced Files * Compression - Avid Ingest - PSE fixing courses and more.

    Mainly delivered remotely via zoom but onsite possible.

     

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  • Wed, Jan 8 2020 1:52 PM In reply to

    Re: DNxHD100 and AMT3

    Thanks, it is true, the DNxHD essenece is the same for full and thin raster, as I understand.

    But in the case of full raster, the StoredWidth, DisplayWidth in the mxf are 1920 instead of 1440.

     

    So the problem, seems to be, that the AMT3 sets teh StoredWidth,Displaywidth to 1440. While the AMT2 set it to 1440.

     

    Gyula

     

  • Wed, Jul 29 2020 1:46 PM In reply to

    Re: DNxHD100 and AMT3

    Can you please tell me why I don't have access to this url ? Thanks

    https://www.avid.com/static/resources/US/documents/dnxhd.pdf

    When I open this link,I got a error:

    You do not have permission to view this directory or page.

     

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