Duplicate keyframes

Is it possible to duplicate a group of keyframes at the same time?
I have four keyframes to duplicate (i.e. at 0, 2, 6 and 10) and I want to copy first in 12, 14, 18 and 22, then at 1s, 1s2f, 1s6f, 1s10f and continue with the same serie. For the moment I have to set the cursor at 12 and duplicate 0, then set the cursor at 14 and duplicate 2, …
Can I duplicate 0,2,6 and 10 together?

Multiple selection of keyframes for duplicate operations is not implemented at the moment.

For repeating actions over and over, you might also want to look at the time loop layer - synfig.org/Time_Loop_Layer


Thank you for your reponse. I’ll try it when I return from my holidays. :smiley: