2 Replies Latest reply on Aug 10, 2014 3:30 AM by Jeroen NL

    Black jagged edges appear on footage with Avid DNxHD codec

    Jeroen NL

      Hello,

       

      Currently I'm editing some GoPro footage from my vacation, and I'm editing this video in Premiere and After Effects.

      When I was done editing in Premiere and exported the video as a Quicktime movie with the Avid DNxHD codec, I brought it in to After Effects.

      The project in After Effects is a 16 bpc since I have to dynamically stretch the footage to make it fit in a 1080p comp (doesn't have to do with this, but the point is, I have to edit in 16 bpc in order to stretch my footage). Now the problem is, I get weird black blocks around my clipped highlights, and this only happens in 16 or 32 bpc.

       

      Here's a screen shot I took from it:

      Gyazo - 549356228a841d35b781c05c2b41011b.png

       

      I don't know a lot about codecs and I have no idea how to solve this, so my question is: How do I get rid of these black blocks while still maintaining this 16 bits per channel?

      It would be great if anyone could give me the answer .

       

      Jeroen