# Does OpenUSD support defining animation blends **URL:** \ **Category:** USD\ **Created:** [March 21, 2024, 12:24am UTC](https://forum.aousd.org/t/does-openusd-support-defining-animation-blends/1359 "2024-03-21T00:24:25Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![rishflab](https://avatars.discourse-cdn.com/v4/letter/r/ecc23a/32.png) [@rishflab](https://forum.aousd.org/u/rishflab)\ **Post date:** [March 21, 2024, 12:24am UTC](https://forum.aousd.org/t/does-openusd-support-defining-animation-blends/1359/1 "2024-03-21T00:24:25Z")
Does OpenUSD have a way to define things like blend trees, transitions between animations or anim state machines? Do blend shapes allow referencing multiple tracks and blending them based on a user defined variable? ---
**Author:** ![rishflab](https://avatars.discourse-cdn.com/v4/letter/r/ecc23a/32.png) [@rishflab](https://forum.aousd.org/u/rishflab)\ **Post date:** [March 21, 2024, 3:09am UTC](https://forum.aousd.org/t/does-openusd-support-defining-animation-blends/1359/2 "2024-03-21T03:09:11Z")
It seems like it doesn’t based on this article > **[Options for representing Animation in OpenUSD](https://extra-ordinary.tv/2023/09/27/options-for-representing-animation-in-openusd/)** > > I have been exploring NVIDIA Omniverse and the standard it is built on, OpenUSD (aka USD). It provides a number of ways to animate objects in a 3D scene. My personal interest in animation is I am t… ---
**Author:** ![spiff](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.aousd.org/spiff/32/22_2.png) [@spiff](https://forum.aousd.org/u/spiff)\ **Post date:** [March 21, 2024, 11:16pm UTC](https://forum.aousd.org/t/does-openusd-support-defining-animation-blends/1359/3 "2024-03-21T23:16:30Z")
That is correct. You can achieve animation retiming using Value Clips, but no blending or recombination of animation clips. That is a feature that _could_ be supported within the context of OpenExec, but not before then.