Working in AE CC 2015.3.
When I try to track a DNxHD 145 file,
all I am seeing is a black screen in Mocha AE.
Is this a compatibility issue? Tried relinking
and still no go.
This sounds like it's possibly a codec issue. Do you have the DNxHD codec installed for QuickTime?If you're still experiencing problems you may need to transcode to a different codec or use an image sequence.