Latest post Fri, Apr 1 2011 8:02 AM by Kristina. 4 replies.
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  • Thu, Mar 31 2011 9:06 AM

    Importspeed XDCAM HD 422 from RAID

    I import XDCAM HD 422 50mbit footage from a eSata attached RAID0 to fibre attached Unity Medianetwork.

    The Unity writes the files with a speed of 40MB/s. Why isn't it faster? I always thought Avid can use the files nativ - so no need to transcode something. The CPU of my xw8600 is runing at 7% 

    Anybody knows whats happening when I import XDCAM HD?

     

    tobi

     

    11* Z820 32GB Samsung PCIe SSD with Avid Media Composer 8.5 5 with Nitris DX 1 with Mojo DX 1 with Blackmagic Decklink Extreme 12G some xw8600 with... [view my complete system specs]
  • Thu, Mar 31 2011 1:05 PM In reply to

    • Kristina
    • Top 500 Contributor
    • Joined on Sun, Nov 28 2010
    • Germany
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    Re: Importspeed XDCAM HD 422 from RAID

    Hi Tobi,

     

    when you are importing footage, including XDCamHD422, AVID is doing a rewrapping process to its own MXF(Atom).

    If you want to use nativ XDCamHD422.mxf(Op1a) you need to link it by ama. Are you familiar with that?

     

    Best regards,

     

    Kristina

    several z800 and xw8600 Nitris DX, MC v.5.5.3, Win XP Prof SP3, ISIS-5000 16TB with Force 10 Switch 10Gig, several MOG S1010 ingest servers, several EVS... [view my complete system specs]
  • Thu, Mar 31 2011 2:55 PM In reply to

    Re: Importspeed XDCAM HD 422 from RAID

    initial thought - read/write disk speed bottleneck..?

    Too many avids to list! [view my complete system specs]
  • Fri, Apr 1 2011 7:38 AM In reply to

    Re: Importspeed XDCAM HD 422 from RAID

    I can read from the RAID with 160 MB/s. I dont know the writespeed of the unity, but it should be more than 40MB/s.

    And rewrapping is only a copy to multiple files(Video/Audio) with a new fileheader. That shouldn't need so much time!?

    Ama works fine, but I don't use it for online-editing.

     

    11* Z820 32GB Samsung PCIe SSD with Avid Media Composer 8.5 5 with Nitris DX 1 with Mojo DX 1 with Blackmagic Decklink Extreme 12G some xw8600 with... [view my complete system specs]
  • Fri, Apr 1 2011 8:02 AM In reply to

    • Kristina
    • Top 500 Contributor
    • Joined on Sun, Nov 28 2010
    • Germany
    • Posts 462
    • Points 5,590

    Re: Importspeed XDCAM HD 422 from RAID

    Have you tried copying the files instead of importing?

    If the copying process is faster, AVID needs more time for rewrapping than you expected. If its the same, it has nothing to do with the rewrapping process ;-)

    We are using XDCamHD422 by AMA after copying it first to an internal storage.

     

    When I do a rewrapping from MXF(Op1a) to MXF(OpAtom) it takes 1/4 realtime of the footage. 

     

    Best regards,

     

    Kristina

     

     

     

    several z800 and xw8600 Nitris DX, MC v.5.5.3, Win XP Prof SP3, ISIS-5000 16TB with Force 10 Switch 10Gig, several MOG S1010 ingest servers, several EVS... [view my complete system specs]
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