i have had some luck with the dnxhd codec for output to a nitris. it works well on the avid side, but be prepared for some headaches on the AE side if you’re not used to working with HD, just cause its compressed doesnt mean it wont be a pain to render. BTW, make sure the ds is on v7.6 QFE 4, cause i had some issues with the previous QFE’s on 7.6