3 Replies Latest reply on Jul 10, 2013 6:19 PM by Jim_Simon

    UT Codec: Really Lossless?

    W.D.E. Level 1

      Hello,

       

      After a lot of help from some of you guys on the "DNxHD Export Issues" thread, I have decided to use the UT Codec for lossless intermediates.

       

      So I exported from PP CS6 choosing YUV422 BT.709 (ULH2) VCM, set to match my 1080p 23,976 16:9 original footage.

       

      Comparing the original footage with the UT exported one, though, by placing both of them back into the timeline (couldn´t open the UT rendered one in any other player), I instantly noticed an overwhelming loss on the grayscale grading (haven´t checked for other possibles isues yet).

       

      Here´s what it looks like (I hope the difference will clearly show here):

       

      Original:

      Original Render 2.png

       

      UT YUV422 BT.709 (ULH2) VCM:

      UT Render 2.png

       

      So, the question: is UT really lossless or I´ve got something wrong?

       

      To make things better, that issue does not occur with with the DNxHD export.

       

      Any hints?

       

      Thanks a lot.