by Sergey Boiko·Workflow
Illustrative cover generated by AnyPlugins — no product screenshot available.
A focused, single-purpose add-on that earns its place for bringing reference-bone clip alignment to Blender's NLA workflow, aimed at Mixamo and mocap transitions. Note it targets Blender 4.2 and won't run on 4.4 or later.
Matching Actions is a Blender add-on that offsets and aligns Action 2 so it starts exactly where Action 1 ends, based on the bones you choose. The result is a more seamless NLA blend, especially for Mixamo and mocap-style clips.
The workflow is direct: select your rig, set Action 1 and Action 2, choose the parent or root bone along with an alignment bone such as a planted foot, then press Match. An optional Z rotation setting lets you match position only, or position plus facing direction. Each time you run a match, a copy of the original Action 2 is saved automatically as a backup.
The add-on works with Blender 3.6 through 4.2 and was developed and tested on Blender 4.2. It is not compatible with Blender 4.4 or later due to changes in the Action system, and it overwrites keyframes in Action 2 to apply the offset. It is released under the MIT license.
Matching Actions is best for character animators aligning Mixamo and mocap clips for smoother NLA blends in Blender 3.6 to 4.2.
Matching Actions is completely free to download and use.
Matching Actions is not compatible with Blender 4.4 or later, due to changes in Blender's Action system. It was developed and tested on Blender 4.2, and its listed support range runs from Blender 3.6 through 4.2. If you're working within that range, you should be able to install and run it as described. For versions from 4.4 onward, the add-on won't function as intended, so check your Blender version before installing and refer to the developer's page for any updates on newer-version support.
Matching Actions installs from a ZIP file using the standard Blender add-on method. Once enabled, open its panel in the N sidebar, select your armature, then set Action 1 and Action 2. Choose the parent or root bone, meaning the hip or root motion bone, along with the alignment bone you want as a reference, such as a planted foot. Finally, press Match Actions to offset and align Action 2 so it starts where Action 1 ends. The workflow moves quickly from rig selection to a matched result.
Matching Actions overwrites the keyframes in Action 2 to apply the offset and alignment. To protect your original data, the add-on automatically creates a backup: a copy of Action 2 saved with the same name plus a copy suffix. That means you can apply a match without losing your starting animation, since the untouched version stays available. If you're chaining several clips, keep this in mind and clean up any unused Actions afterward to keep your file tidy. The backup happens on its own, so no extra steps are needed to preserve the source.
Matching Actions handles one pair of Actions at a time, so for multiple walk-cycle steps you'll usually duplicate your Actions, place them sequentially, and run the matching per pair. After aligning each pair, delete any unused Actions to keep the project clean. This step-by-step approach lets you build longer sequences from individual matched clips, with each transition aligned to the reference bone you pick. It suits mocap-style and Mixamo clips, where a planted foot can serve as a stable alignment point across repeated steps.
Matching Actions is listed as free in this catalog, and it is released under the MIT license. For current licensing, pricing, or ways to support the developer, check Sergey Boiko's page directly, since terms can change over time. The add-on is a single-purpose tool for aligning animation clips within Blender's NLA workflow, so its scope is straightforward. A demo video is also available if you'd like to see more about the add-on before installing it.
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