FBX Importer fails to read animation correctly #104656

New Issue

Pratik Borhade · 2023-05-31T06:42:13+02:00

Pratik Borhade commented

2023-05-31 06:42:13 +02:00

System Information
Operating system: Windows-10-10.0.22621-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 532.03

Blender Version
Broken: version: 3.5.1, branch: blender-v3.5-release, commit date: 2023-04-24 18:11, hash: e1ccd9d4a1d3
Worked: N/A

Short description of error
The below FBX file fails to import the animation, even though it is a valid FBX file which imports correctly in other software.
https://drive.google.com/file/d/15xMqnhzOVadvKT0e11KsTQotWLmayryL/view?usp=sharing

Exact steps for others to reproduce the error

Import the FBX file
Notice the skeleton imports but animation does not

Try this file in other software such as Maya or Houdini to see the problem only occurs in Blender for some reason.

Originally reported at: blender/blender#108443

**System Information** Operating system: Windows-10-10.0.22621-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 532.03 **Blender Version** Broken: version: 3.5.1, branch: blender-v3.5-release, commit date: 2023-04-24 18:11, hash: `e1ccd9d4a1d3` Worked: N/A **Short description of error** The below FBX file fails to import the animation, even though it is a valid FBX file which imports correctly in other software. https://drive.google.com/file/d/15xMqnhzOVadvKT0e11KsTQotWLmayryL/view?usp=sharing **Exact steps for others to reproduce the error** 1. Import the FBX file 2. Notice the skeleton imports but animation does not Try this file in other software such as Maya or Houdini to see the problem only occurs in Blender for some reason. Originally reported at: https://projects.blender.org/blender/blender/issues/108443

Pratik Borhade added the

labels 2023-05-31 06:42:14 +02:00

Pratik Borhade referenced this issue from blender/blender

2023-05-31 06:42:57 +02:00

FBX Importer fails to read animation correctly #108443

Thomas Barlow commented

2023-05-31 14:36:00 +02:00

I get the same Python assertion failure when importing this .fbx as #84111 and #94670

The root cause appears to be the FBX importer not supporting in-between blend shapes #90382.
I don't yet know whether the current handling of FullWeights (conversion to/from a shape key's vertex group) is incorrect or if this is just another way FullWeights can be used.

Some information on this from the FBX SDK documentation: http://docs.autodesk.com/FBX/2014/ENU/FBX-SDK-Documentation/index.html?url=cpp_ref/class_fbx_blend_shape_channel.html,topicNumber=cpp_ref_class_fbx_blend_shape_channel_htmlbbdf8508-83dc-4405-a50b-6798f6105577

I get the same Python assertion failure when importing this .fbx as https://projects.blender.org/blender/blender-addons/issues/84111 and https://projects.blender.org/blender/blender-addons/issues/94670 The root cause appears to be the FBX importer not supporting in-between blend shapes https://projects.blender.org/blender/blender-addons/issues/90382. I don't yet know whether the current handling of `FullWeights` (conversion to/from a shape key's vertex group) is incorrect or if this is just another way `FullWeights` can be used. Some information on this from the FBX SDK documentation: http://docs.autodesk.com/FBX/2014/ENU/FBX-SDK-Documentation/index.html?url=cpp_ref/class_fbx_blend_shape_channel.html,topicNumber=cpp_ref_class_fbx_blend_shape_channel_htmlbbdf8508-83dc-4405-a50b-6798f6105577

Pratik Borhade commented

2023-09-27 08:03:21 +02:00

Yeah, got assertion failure too.
I think we can close this.

Yeah, got assertion failure too. I think we can close this.

Pratik Borhade closed this issue

2023-09-27 08:03:23 +02:00

Blender Bot added

and removed