Inserting keyframe ruins Bezier interpolation. There is an option Sample keyframes, but it inserts keyframe for every frame - this is too much for me. How to do it without additional handwork?

Top to bottom: original curve, single keyframe inserted, sampled

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  • 1
    $\begingroup$ This sounds like a bug in blender. To preserve the curve shape the control points must be adjusted according to exact formulas for subdividing a bezier curve. cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/… $\endgroup$
    – Mutant Bob
    Mar 15, 2017 at 14:33
  • $\begingroup$ Can I ask what you aim to do? I ask because if you want the exact same curve, why do you need to add a keyframe? $\endgroup$
    – lemon
    Mar 16, 2017 at 5:48
  • $\begingroup$ Lemon, because in my real project I have a curve (about 2000 frames) which is already fit in whole animation scene, but now I want to behave it differently from frame 500 to 650 without affecting outside values. Basicaly, I would like to put bounadaries with this keyframes at 500 and 650 frames $\endgroup$
    – Serge L
    Mar 16, 2017 at 7:55


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