Thank you for filing this request.
We have logged an internal feature request for adding support to the Animation codec for both encoding and decoding delta frames (a.k.a, the “Key frame every X frames” option). It is currently under review for future updates to the Adobe DVA products. At this time I can not share a timeline for when this might happen.
An error occurred while saving the commentErik Waluska commented
Please bring back support for QT animation regardless of keyframes.
Also, I don't see why Adobe had to remove the ability to READ any QT codec to begin with? There are millions of QT files out there in people's projects that they can't even open now!