Unable to import Animated USD file with to ISAAC for robot Simulation

Omniverse Isaac Sim
1

Isaac Sim Version

4.5.0
4.2.0
4.1.0
4.0.0
4.5.0
2023.1.1
2023.1.0-hotfix.1
Other (please specify):

Operating System

Ubuntu 22.04
Ubuntu 20.04
Windows 11
Windows 10
Other (please specify):

GPU Information

  • Model: RTX 3070 TI
  • Driver Version: 535.230.02

Topic Description

Detailed Description

I created an environment using USD composer added the needed animations to skeletons and exported as USD scene to work with robots in ISAAC sim. But When I open the USD file inside the ISAAC sim it doesn’t work as expected Only Skel root translation motion is exported and the animation clip is not. I

Steps to Reproduce

  1. Import the USD file in USD composer and press Play
  2. Import the USD file in Isaac sim and press Play
  3. Check if the every is same, mostly only PushGraph animations are working in the ISAAC Sim.

Warning Messages I get when I load the scene and play in ISAAC SIM

2025-06-26 18:18:52 [31,808ms] [Warning] [omni.usd] Unexpected reference count of 2 for UsdStage ‘anon:0x3fac9f30:World0.usd’ while being closed in UsdContext (this may indicate it is still resident in memory).
2025-06-26 18:18:53 [32,111ms] [Warning] [omni.hydratexture.plugin] ‘/Render/OmniverseKit/HydraTextures/omni_kit_widget_viewport_ViewportTexture_0’ is not a Usd.RenderProduct and cannot be used, reseting to ‘/Render/OmniverseKit/HydraTextures/omni_kit_widget_viewport_ViewportTexture_0’
2025-06-26 18:18:53 [32,183ms] [Warning] [omni.usd] Warning: in ProcessPropertyChange at line 522 of /builds/omniverse/usd-ci/USD/pxr/usdImaging/usdSkelImaging/skeletonAdapter.cpp – Unhandled ProcessPropertyChange callback for cachePath </Environment/Jumping_zebra/c93509517f634cff8f505f8e3a9df466_fbx/Object_2/RootNode/African_Animal___Zebra/node_Object_Pivot_Node_/Object_6/node_rootJoint/bind_pelvis01_010/HitFront> in UsdSkelImagingSkelAdapter.

2025-06-26 18:18:54 [33,934ms] [Warning] [omni.hydra.scene_delegate.plugin] Calling getBypassRenderSkelMeshProcessing for prim /Environment/Shumard_Oak/Shumard_Oak_branchShape_MASH1_Instancer_0m4u_instancer.proto0_Shumard_Oak_branchShape_MASH1_Instancer_0m4u_id0 that has not been populated
2025-06-26 18:19:29 [68,869ms] [Warning] [omni.fabric.plugin] Warning: attribute visibility:x not found for path /Environment/PushGraph/__runtime_data/Jumping_zebraCurveNode_outputs_AnimFrame

Screenshots or Videos

A Video of how the animation looks when imported inside ISAACSIM


How it should actually look, a video from USD COMPOSER

Additional Information

What I’ve Tried

I tried baking the animation using the stage recorder and then imporiting it as sublayers. Still made no difference. I though of using usdz file which shall include everything into the USD but in export options in USD composer there is no option for usdz.
I am using 2023.2.5 Beta version for USD composer.

USD Files and related files.

Zebra_animated_world.zip (62.1 KB)
Zebra_asset_USED
zebra-rigged.zip (5.7 MB)

2

Hi there. I just helped you with this exact issue in the other thread. Remember? I just got your files working in USD composer. These files also should work finding Isaac Sim. Animation from SketchFab moving in place - #7 by Richard3D

First of all, you should be using the very latest versions of both Isaac Sim and USD composer

For Isaac Sim, it should be 5.0
For USD composer, it should be 107.3

Remember, these versions are not available on launcher. Launcher is now discontinued. Please do not use it. Do not use 4.2 or 2023.2.5.

Please go to GitHub - NVIDIA-Omniverse/kit-app-template: Omniverse Kit App Template For the latest, USD composer

Please go to GitHub - isaac-sim/IsaacSim: NVIDIA Isaac Sim™ is an open-source application on NVIDIA Omniverse for developing, simulating, and testing AI-driven robots in realistic virtual environments. for Issac Sim

3

For some reason I wasn’t able to run Isaac sim 4.5 , my gpu always crashed. I was just able to solve it my enabling all the extensions in Isaac sim.

Thank you for you help.

4

Well, then let’s start a new ticket on why you cannot run Isaac Sim 5.0. Because that’s why we need to start. Especially as well on USD Composer, 107.3.

There is no point trying to debug an issue on an old version. We may as well get you on the new version and debug that. If you can’t run Isaac Sim 5.0, let’s start with that.

Those animated files I sent you before, they work fine in USD composer, 107.3, correct?

Please try to run 5.0 again and if it crashes give us the crash logs so we can see. take a video of it if you can.

1 Like
5

yes the files you provided work fine.

I thought my specs (minimum required config) weren’t good enough for new version as it took a very long time to load. I will try it again and raise another ticket if it doesn’t work.

Thanks.

6

Well a 3070Ti is just barely enough yes. But you still want to run the latest version.

7

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