Urgent Please Help.....

[yogeshwagh]

hi to all,

i have a problem in my animation. my problem is that iahve to animate the opacity of some objects in my animation.

Scene Explanation is as follows,

i four gates in my animation. total 900 frames are there and i have animate the opacity for the last gate in my animation, b'cose first and last frame should be the same in my animation thats why i have animate the opacity of the last gate with visibility on and off values in the properties of my gates.

but the problem is if i animate this gates with the visibility parameters my render will stop after 450 frames b'cose i have animate those values from 450 to 900. till 450 the visibility of that gate is 0 after 450 it is on.

but after 450 frame my render is getting stopped at the lightcache calculation.

so please help me on this, how do i animate the opacity of this gate

 

 

thanks

Yogesh

[Scott Schroeder]

Both opacity and visability tracks will mean frustratingly long renders. I'd advise not to use either. Can you just animate the gate itself, ie the geometry? Why does the opacity need to be animated?

 

If you must use opacity, then do not use the opacity slot. Simply put the material you are using in the opacity slot into the REFRACTION slot with a VALUE of 1.0 This is a common cheat to get opacity without the super long render times.

 

Perhaps upload a test render to help us better under stand?

[yogeshwagh]

Both opacity and visability tracks will mean frustratingly long renders. I'd advise not to use either. Can you just animate the gate itself, ie the geometry? Why does the opacity need to be animated?

 

If you must use opacity, then do not use the opacity slot. Simply put the material you are using in the opacity slot into the REFRACTION slot with a VALUE of 1.0 This is a common cheat to get opacity without the super long render times.

 

Perhaps upload a test render to help us better under stand?

 

hi thanks for quick reply .....

i have to match my first frame with the last frame. actually in my animation all my basic scene is rendered. but now i am rendering the gates separately using with the matte properties for the other objects.

total four gates are there . in my first frame total 3 gates are seen. but as i move my camera forward at the last frame i have a diffrence of one gate in the depth thats why i have animated one another gate in depth with visibility on and off. so that i can see the same 3 gates at the end frame.

but if i will do this with vray my render is getting stopped at lighcache calculation. but with the same settings if i render these gates with scanline it renders fast. but i don't want scanline o/p.

is there any clue in vray to render the object with its visibility on and off.

 

please help me...

 

thanks again for reply

 

Yogesh

[Scott Schroeder]

No, do not use visabilty tracks in Vray. Ever.

 

Simply animate the gate itself, be it moving into the scene from beyond the camera's point of view or what have you. So you'd have the gate outside of the camera's cone of view, and when you need to see it or not see it you have the geometry animated to move into your scene.

 

There are many many ways around this besides using visability tracks.

 

If all else fails use scanline, and comp together. Do these gates really need to be in Vray if it's just the gate itself on the layer?

[yogeshwagh]

No, do not use visabilty tracks in Vray. Ever.

 

Simply animate the gate itself, be it moving into the scene from beyond the camera's point of view or what have you. So you'd have the gate outside of the camera's cone of view, and when you need to see it or not see it you have the geometry animated to move into your scene.

 

There are many many ways around this besides using visability tracks.

 

If all else fails use scanline, and comp together. Do these gates really need to be in Vray if it's just the gate itself on the layer?

 

hi thanks for reply and your suggestion,

in my scene that gate is not animated only i have to show that there is a gate in depth. yesterday i have tried with scanline also, but the o/p doesn't match with my original Vray scene.

can u please help to give the solution to render it with vray itself.

 

thanks

Yogesh

[lecameleon]

I solemnly swear that I went through the posts 5 times.. and I am still no closer to comprehending what is required here.. Maybe I am a bit of a numskull..

Anyways, opacity animated.. bad idea.. If I may suggest something.. (although I dont really know what this is all about and why the opacity needs to be aniamted etc..)... Use render passes and then composite them together using the alpha to set opacity/visibility etc.. but then Duh.. I dont know if that helps either..n good luck

[Ky Lane]

Personally, Id run 2 animations, one with 100% opacity and one with 0%, so you have 2 videos...and use premier or similar to merge them across as needed.

 

Possibly quicker in the long run..

[yogeshwagh]

Personally, Id run 2 animations, one with 100% opacity and one with 0%, so you have 2 videos...and use premier or similar to merge them across as needed.

 

Possibly quicker in the long run..

 

hi thanks for your reply,

i tried already what you are suggesting. but if i animate the opacity my lighcache calculations are stopped at 85% . Now i have got the solution to render this project.

i have rednered that gate on separate layer without on and off of the opacity. then i have composited them in AFX . and in AFX i have animated the opacity of that layer.

 

 

Tanks Of Thanks To All,

 

Yogesh

[Ky Lane]

Thats what I meant. Dont animate them, just render 2 animations, one with full opacity, one with no opacity and blend them using premiere or whatever dv editor you like...