ffmpeg: how to convert to DNxHR in Windows 10?
There's a single decoder/encoder which reads/converts to both DNxHD and DNxHR.

You have to set the correct profile switch. Available options are

 dnxhd                        E..V....
 dnxhr_444                    E..V....
 dnxhr_hqx                    E..V....
 dnxhr_hq                     E..V....
 dnxhr_sq                     E..V....
 dnxhr_lb                     E..V....


Basic minimal syntax would be

ffmpeg -i in.mp4 -c:v dnxhd -profile:v dnxhr_hq out.mov




The Avid codecs package has no interaction with ffmpeg.

[19-1-2017] At this time, the encoder does not support 444 or HQX profiles.

[4-2-2017] Now, it does.