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Issue ID




Animation twitches at the start of a animation loop

Asset Importers


Steps to reproduce:
1. Download and open "Test" scene
2. Enter play mode
3. Observe looping idle animation

Expected results: animation smoothly loops
Actual results: at the start of the loop animation twitches

Reproduced with: 2017.1.0b6, 5.6.1p1, 5.5.3p4

  1. Response avatar

    Resolution Note:

    There are many factors to consider in this specific case, and the fact that the source is a Maya file (an extra export involved) with pre-rotations on the animated joints, which something Unity does not support which forces a resample at FBX import in order to preserve existing animation properly. This means many different Maya, Maya FBX Exporters/options & Unity versions can be involved to track down the exact regression in a version that is not longer officially supported (more than 2 versions back). This combined with the fact that there are a couple possible workarounds, such as adding 1 extra key as padding before after the start/end times in Maya, (or not using pre-rotations on animated joints), are a very acceptable solutions. Fixing this issue would have a high risk of the result being different/wrong in other cases.
    For all these reasons, we have no plans to address this issue in the near future.

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