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FBX Animation Export - Unexpected Rotations #80207

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opened 2020-08-29 01:45:34 +02:00 by Juan Pablo Riebeling · 4 comments
Juan Pablo Riebeling commented 2020-08-29 01:45:34 +02:00
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System Information
Operating system: Darwin-16.7.0-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon HD - FirePro D700 OpenGL Engine ATI Technologies Inc. 4.1 ATI-1.54.2

Blender Version
Broken: version: 2.83.5, branch: master, commit date: 2020-08-19 06:07, hash: blender/blender@c2b144df39
Worked: never for me

Short description of error
Exporting my FBX character animations generates unexpected rotations on bones that aren't even animated.

Exact steps for others to reproduce the error

  • Model, rig, and animate a character (everything in Quaternion WXYZ. No IKs, No other constraints).
  • Export as FBX (Tried a bunch of different stuff: swapping primary bone orientation, smaller/bigger sample sizes, less simplifying, leaf bones, etc. pretty much all checkbox configurations )
  • Reimport that FBX back into blender.
  • Play Animations. Some bones have an undesired rotations.
**System Information** Operating system: Darwin-16.7.0-x86_64-i386-64bit 64 Bits Graphics card: AMD Radeon HD - FirePro [D700](https://archive.blender.org/developer/D700) OpenGL Engine ATI Technologies Inc. 4.1 ATI-1.54.2 **Blender Version** Broken: version: 2.83.5, branch: master, commit date: 2020-08-19 06:07, hash: `blender/blender@c2b144df39` Worked: never for me **Short description of error** Exporting my FBX character animations generates unexpected rotations on bones that aren't even animated. **Exact steps for others to reproduce the error** - Model, rig, and animate a character (everything in Quaternion WXYZ. No IKs, No other constraints). - Export as FBX (Tried a bunch of different stuff: swapping primary bone orientation, smaller/bigger sample sizes, less simplifying, leaf bones, etc. pretty much all checkbox configurations ) - Reimport that FBX back into blender. - Play Animations. Some bones have an undesired rotations.
Juan Pablo Riebeling commented 2020-08-29 01:45:34 +02:00
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Added subscriber: @jovenpaul

Added subscriber: @jovenpaul
Juan Pablo Riebeling commented 2020-08-29 01:46:35 +02:00
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Files For test

FBX Animation break.blend
Onion.fbx

Files For test [FBX Animation break.blend](https://archive.blender.org/developer/F8817956/FBX_Animation_break.blend) [Onion.fbx](https://archive.blender.org/developer/F8817962/Onion.fbx)
Ankit Meel commented 2021-04-18 13:57:03 +02:00
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Changed status from 'Needs Triage' to: 'Confirmed'

Changed status from 'Needs Triage' to: 'Confirmed'
Ankit Meel commented 2021-04-18 13:57:03 +02:00
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Added subscriber: @ankitm

Added subscriber: @ankitm
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Reference: blender/blender-addons#80207
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