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Add-on: Additive Keyer


lucky writes:

Here is the first release of Additive Keyer, an addon to interactively key an additive strip, known as additive animation layer in other software.

Additive animation layers are mainly used for motion capture edition, to keep the main layer untouched while tweaking on an additive layer, or special animators needs, such as animating motions over a walkcycle.

It solves the double transformation issue when keying on an additive strip the usual way. Supports one additive strip for now, armatures only.

You can download it for free by entering $0, or give more to support the effort.

About the Author


Digital artist, coder.


  1. Rombout Versluijs on

    Wow that seems very useful, i hardly do animations. But beeing able to add a animation on top of a existing animation seems very powerful!


  2. > You can download it for free by entering $0, or give more to support the effort

    But I must 'pay' (give) my e-mail for get it. No, thanks. I prefer downloading such things from Github.

    > You can download it for free(?)

    Every time when I see such thing it confuse me, because ALL ADD-ONS THAT USE BLENDER API SHOULD BE LICENSED UNDER GNU GPL, so every add-on should be free&open-source

    • Email are collected by gumroad to send future addon updates notifications to the users .
      As far as i rememver, I've bought several addons on gumroad and never received ads.
      Anyway, you can enter a non-existing email adress if you don't want to leave it.

      GPL does not mean free, it's totally allowed and even supported to sell GPL softwares, just take a look at the GPL website for more informations. But for this addon it's up to the user to choose if he wants to support the work, so just enter $0 and you can get it for free!

    • Hi David,
      Absolute mode is already supported by the NLA editor, just set the Action Blending to "Replace" instead of "Add".
      Baking is supportel natively as well: Spacebar > "bake" > NLA bake action

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