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:
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 .
Convert the footage to another format... This happens with a wrong color range used in the DNx stuff and is actually a bug/ limitation in there.
I just came up with a solution myself. In Premiere, change in the DNxHD codec settings from ''709'' to ''RGB''.
When you bring it into AE again, it won't have the black edges anymore.
However, I don't really know what this does to the quality of the video, but there's not a noticable difference.