by nab·Workflow
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Earns its place in the aescripts library as a focused utility that trims tracker-generated mask keyframes down to those that differ from their predecessor.
Remove Unnecessary Mask Keyframes is an After Effects script from developer nab that works on keyframes produced by After Effects' built-in mask tracker. The tracker generates a keyframe on every frame, and this script looks at that every-frame set and removes any keyframe that falls under a threshold of being similar to its predecessor.
Released as version 1.0 on January 14, 2021, it runs across a broad span of After Effects versions. Supported builds include CS6, the CC line, CC 2014 through CC 2019, and the 2020, 2021, 2022, 2023, 2024, and 2025 releases.
The script is listed here as free. For the current version, licensing details, and any usage notes, see the developer's page on aescripts. It stays narrow in scope, aimed only at thinning tracker-generated mask keyframes rather than offering a broad toolset.
Remove Unnecessary Mask Keyframes is best for after Effects users cleaning up masks tracked with the built-in mask tracker.
Remove Unnecessary Mask Keyframes is completely free to download and use.
Remove Unnecessary Mask Keyframes lists compatibility with After Effects 2025, along with 2024, 2023, 2022, 2021, and 2020. It also supports the CC line, including CC 2019, CC 2018, CC 2017, CC 2015.3, CC 2015, CC 2014, the original CC release, and CS6. That range means the script covers current builds as well as much older versions of After Effects. If you are unsure whether your exact build is covered, the developer's page on aescripts lists the supported versions in full.
Remove Unnecessary Mask Keyframes is listed here as free. This catalog does not publish a set price for it, so for the current licensing terms and any conditions attached to downloading or using the script, check the developer's page on aescripts. Licensing and availability can change over time, and the developer's page is the place to confirm how the script is distributed before you add it to your After Effects setup.
Remove Unnecessary Mask Keyframes targets keyframes created by After Effects' built-in mask tracker, which places a keyframe on every frame. The script examines those tracker-generated every-frame keyframes and removes any that fall under a threshold of being similar to their predecessor. In other words, keyframes close enough to the one before them are taken out, while the script leaves the rest in place. That is the core behaviour described for the tool, focused specifically on tracker-generated mask keyframes.
Remove Unnecessary Mask Keyframes supports older After Effects versions, including CS6 and the full CC line: CC, CC 2014, CC 2015, CC 2015.3, CC 2017, CC 2018, and CC 2019. Alongside those, it works with the year-numbered releases from 2020 through 2025. So whether you are on a legacy CS6 install or a recent build, the script's stated compatibility covers it. The developer's page on aescripts confirms the complete list of supported versions.
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