Hello again my friends
I exported an animated camera from Maya to the Houdini,But my camera's view on the Maya doesn't match to the Camera's view in the Houdini !

At the first check your Camera resolution parameter in the view page ,In the Maya you should define global image size in the render setting ,But in the Houdini you can define different Image Size for each Camera !

Thanks ,Yes ,You right and I defined correct image size in the Camera's parameters ,But my problem didn't solve

I have different camera's animation in the Houdini ,But every things in the Maya are good

FBX Format just export some standard parameters(Attributes in Maya) like Transformation data like Translate , Rotate , Scale and some special camera's parameter like Far and Near Clip Plane.

Camera in the Maya has some customize parameters that doesn't exist in the Houdini and FBX can't export them.

So you have to be sure that these parameters(Attributes) doesn't use in the animation !

to test it ,Export a simple Camera to the Houdini (Just set keyframe for Translate and Rotate).

If it works ,Compare it's parameters with original camera.


If your problem didn't solve , Please upload your FBX file

Yes ,I found it ,“Film Roll Value” attribute of my camera is keyframed !
But what is Film Roll Value attribute ? It's pretty like to rotating camera around Z Axis !?
How can I export it to the Houdini ?

I think The (Film Roll Value) in the real world is something like to rotating CCD instead of rotating Camera !

For exporting it to the Houdini you should convert it to RoationZ .

It's so simple ,Just create a simple group above of the Camera ,Then connect Film Roll Value to the Rotation Z of the Group .
To achieve best result ,Bake your camera on every frame.

I wrote a simple Python Script in the Maya for exporting Camera to the Houdini ,It can be convert any camera with Constraint , Motion Path , Film Roll Value and … to simple Transformation data and export it to FBX format.
I searching it on my PC and I'll upload it for you later !!! :wink:

Here ,I found compiled version !
this is for Maya 2012 - 2013 ,But If you wanna it for Maya 2014 ,I should searching for source code :idea:

You can export your camera without any problem about using Constraints , Motion Path , Film Roll Value , Multiple Grouping and Parenting to the Houdini :wink:

Really Thanks Sadjad ,I'll Check it later (At Home).

You said before that you working with Maya too ,I have another question ,What's your suggestion about exporting and importing pipeline between Maya and Houdini !?

I usually use FBX format (With my Python Script) for exporting Camera to the Houdini.

And I use Alembic format for exporting Geometry with Point's cache data to the Houdini.

Of course FBX can do it too ,But I think Alembic is specially for this purpose !

Alembic format is so cool and you can import your geometry (like Cloth) from Houdini to the Maya too :wink:

So the Alembic useful for exporting Geometry ,But is there any way for exporting VOXEL data to Maya !?

If your meant is exporting Volumetric Effects like Smoke , Fire , and … , from Houdini to Maya ,Yes !

You can use Houdini Engine ,It can be convert Pyro to Maya Fluid Effects type ,Then You can Render it in the Maya 8)

But I suggest you to render these effects in the Houdini with Mantra ,Mantra is very cool in rendering Volumetric ,I always use Mantra for rendering these effects :idea: