Visibility tracks

[daniel_diligent]

Hello;

I'm working on an animation describing the mounting of a machine. I use visibility tracks to manage objects to appear and dissapear. I just fund that apperently V Ray doesn't manage correctly the visibilty tracks, my objects appears suddenly instead of slowly fading in or out.
Is it me make a mistake in the use of V Ray ?

Thanks for advices
Daniel

[fixeighted]

Depending on what exactly you need to happen, then this post should help, I hope https://forums.chaosgroup.com/forum/...illity-channel.

[daniel_diligent]

fixeighted Thanks. Usually when i have to do this on 2 or 3 object i find it faster to do it in Premeiere, an image without the object an image with and let's fade. But the thing is that on the scene i work i have about 200 object to mamange appering and dissapearing. I made a maxscript to help me, it works fine in sankie but with V Ray hummm hummm.

[fixeighted]

Many ways to do this depending on needs of course. It's a shame your script can't help, though maybe someone else here has an idea to tweak it.
I don't know what 'sankie' is so can't comment.
Are you animating the camera around the scene whilst fading things?
If not then you can create the base image, then output a cryptomatte for everything on another pass and mask them out that way I guess. Would also work with animation but double the frames of course.

[daniel_diligent]

My script creates the visibility key cause in Max you have to do it manually in the dope sheet which is quite long. I have to learn the V Ray modifier, may be one makes the job.