I need help to build a node tree which would allow me to skip every odd frame in the object's animation. Basically, I need a tool that behaves just like a stepped modifier but in geometry nodes.


My object can be either an alembic or a sequence obj which means it doesn't have keyframes to which I could apply a stepped modifier. I also need the object to be the only one that skips frames whilst the rest of the scene runs at 24 fps, so I can't use 12 fps globally.

OBJ Sequence test

I found this node tree on the web that converts the obj sequence to animation. Unfortunately I am only able to slow down the animation meaning that, although one position takes 2 frames, the overall animation is twice as long. I need one position to hold for two frames, but the animation to still have the same length, meaning it sort of throws away every other frame.

node tree screenshot


I have no idea what a node tree for alembic would look like, :-) but we managed to make the tool I need in Cinema 4D using Xpresso, I believe it can be done in blender as well.

I would be grateful for any advice :-)


1 Answer 1


Looks like you can replace your Divide with a Snap (still a Math node so just use the dropdown), setting Increment to 2.

  • $\begingroup$ Wow, that was quick thanks a lot, this works. Any idea how to solve it for the alembic? Do you know what the node tree should look like? $\endgroup$ Commented Mar 18, 2023 at 9:47
  • $\begingroup$ Sorry, I don't know anything about Alembic. $\endgroup$
    – Nick H
    Commented Mar 18, 2023 at 9:53
  • $\begingroup$ Nevermind thank you for advice :-) $\endgroup$ Commented Mar 18, 2023 at 10:01

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