Alembic Export Motion Blur issues

[nileshHBG86]

Hello Team,

We are facing an issue in which motion blur is not matching when we export alembic from animation file. The motion blur of animation file and alembic is different.

While exporting alembic, we have also enabled (frame relative sample) option but still motion blur is not coming in the same way.

Kindly look into this and provide the solution asap.

[howiiVFX]

Hey,

I can just guess here, without access to any test files.

How many motion blur samples (keys in the render settings interface) are you rendering with? When exporting alembics you need to make sure you have sub steps baked into the alembic that matches the samples you're rendering with.
For example when rendering frame 1001 with the default 2 samples in renderSettings and center of frame makes arnold sample the geo in frame 1000.75 and 1001.25 - so you need to have that info baked into the .abc file.

To check if your alembic file has the correct data, you can go to maya's prefs -> Settings -> Time slider -> and turn off "Snap to whole frames". Then you're able to check the sub frame animation, and make sure the alembic data exported matches your maya geo.

Hope this info helps!