Latest post Fri, May 7 2021 8:37 AM by ViktorB. 1 replies.
Page 1 of 1 (2 items)
Sort Posts: Previous Next
  • Sat, May 1 2021 9:29 PM

    • timhorton
    • Not Ranked
    • Joined on Mon, Mar 15 2021
    • Posts 4
    • Points 40

    DNxHD with Alpha Channel



    I would like to use DNxHD op1a .mov as my export codec for a video file with an alpha channel. Is this possible? 


    I have tried to export this type of file from all kinds of different software: after effects, premiere, resolve, fusion, nuke, etc and everytime I choose a DNx codec it comes out with a solid white alpha instead of the shape I created. I do the same thing with ProRes 4444 or Animation codec and I get the correct behaviour. I thought DNx supported alpha channels? As I said above, it does seem to carry an alpha it's just a full white screen instead of anything useful. Please let me know if there is something I am doing wrong here!



  • Fri, May 7 2021 8:37 AM In reply to

    • ViktorB
    • Not Ranked
    • Joined on Wed, Mar 20 2019
    • Posts 11
    • Points 95
    • Avid Developer Moderator
      Avid Employee

    Re: DNxHD with Alpha Channel


    DNx codec supports embedded alpha for DNxHD/HR compressions. How the feature is used, depends on specific application. Only embedded alpha is avaialble in MXF OP1a. In MOV some applications also might store DNx+alpha in old-style dual frame form. To understand what's going on, could you please share with us (if possible) samples with DNx+alpha (1 frame is enough) you exported in abovementioned applications.

    Thanks in advance!

Page 1 of 1 (2 items)

© Copyright 2011 Avid Technology, Inc.  Terms of Use |  Privacy Policy |  Site Map |  Find a Reseller