Blender alembic export camera jitter (if cam rotation)

[r-username]

Is there a trick to make this happen?

What I have learned:

I can get smooth exports with any cam location and with follow path constraints, very nice.

If I add any camera rotation, I get jitter.

Current version of blender plugin and win7

Thanks in advance
S

[ROUBAL]

To make this happen or to make this not happen ? In a previous release of Octane, Camera Jitter was present on moving camear as a flaw, making the camera not usable. It has been fixed.

Do you need Jitter or want to get rid of it ? I don't understand your question.

If you want some jitter to add realism to a supposed hand held shot, don't you have a noise modifier to add som randomness to your camera animation curves , like in Blender ?

[r-username]

To make this happen or to make this not happen ? In a previous release of Octane, Camera Jitter was present on moving camear as a flaw, making the camera not usable. It has been fixed.

I do not want camera jitter

I can get smooth alembic camera exports only if the camera rotation values are 0,0,0. If I add any rotation the camera jitter is all over the place.

Using the latest version 2.70, server v4.3,

I have a scene with a follow path camera constraint , if the camera follows the path directly above it works fine. If I want the cam to fly along side the object, using a 40 degree rotation it jitters.

Can you export something like this?

Thanks in advance.

[ROUBAL]

@r-username :

Could you put your blend file with just the camera and curve, in a zip file ? I would like to test here, because I can't get a path animation with Blender 2.70a Official and 2.69 for Octane !
maybe I am missing something, or maybe it may be linked to a Blender bug...

Usually I prefer to use the "Clamp To" constraint with a tracking constraint to an empty with same "Clamp To" constraint moving in advance on the same curve.

[r-username]

My computer is rendering for the night and I would like to try the clamp method.

One note, I spent the morning trying to find a solution. I set up the most basic scene with a cam and just two key frames then added camera rotation, export alembic, it had jitter in standalone. It makes me question my install?

Thanks again for the response
S

[ROUBAL]

I set up the most basic scene with a cam and just two key frames then added camera rotation, export alembic, it had jitter in standalone. It makes me question my install?

I had the same behaviour with the first plugin release for alembic. It is solved now, and was not due to the plugin but to the Standalone not reading well the alembic file, if I remember well. It sounds that you are working with a not enough recent version of the Standalone.

[r-username]

It sounds that you are working with a not enough recent version of the Standalone.

I updated but still had the jitter.

Turns out it was a import scale issue. In the alembic tools I changed the scale and it works now. I had been scaling the mesh to match the alembic motion path, so just reversing what item was scaled fixed the issue.

Thanks for the input.

[ROUBAL]

so just reversing what item was scaled fixed the issue.

Thanks too. This info may be useful !