Vray sky render & EXR

[KushKush]

Is there a way to render Vray sky with exr? Currently, I'm rendering Vray sky separately as jpeg, I'm not sure if it's related,but I'm getting white edges with motion blur(motion blur from 3ds max rendered) when compositing Jpeg and EXR files.

[fixeighted]

To get rid of the white line you need to render the object/s against a black background.
In this case you put the Vray sky map into a dome light and disable it in the env slot.
Set the dome light to invisible, then render to exr and you'll have no issues.

I'm not sure what you mean about rendering the sky with exr...can you explain a bit more what you need?
If it is just the same background as for the motion blurred objects then yes, you can save it as whatever file type you like

[KushKush]

I'm not sure what you mean about rendering the sky with exr...can you explain a bit more what you need?
If it is just the same background as for the motion blurred objects then yes, you can save it as whatever file type you like

I mean, I render EXR file and I can't see the background image(In this case VraySky) set in the environment slot.
Motion blur on black background, well that's a bummer. I thought that if my background is the same one that motion blur was rendered with, it would be fine.
I think you misunderstood me, or it's me who misunderstood your explanation. I have dome light with hdri which is invisible, it's there to provide lighting. I want VraySky to be my "background image" when I render EXR. Currently, I have to render two times, once the entire scene with render elements as EXR file and the other is the background which is JPEG file format.

I added a screenshot below to illustrate my problem.
Red is background Jpeg sequence and Torquise is RGB + render elements. As I mentioned above, I render motion blur with that background, is it normal for that to happen?

[fixeighted]

If you already did the renders and it's messed up then unfortunately I think there's no cure

You could do it all by adding different elements to the exr, then extract those as needed. I'll try to remember to do a quick example tomorrow....too much wine has been drunk this evening

[KushKush]

Enjoy your wine.
It's less about this render specific, but more in general. I wonder what is the correct way to add background to render element. I've seen there is an option in vfb, but it requires a file link in explorer(VraySky is not a file in explorer).

[fixeighted]

As I suspected, wine doesn't help when figuring things out late at night

Anyway, it's back to the standard method of 2 renders, one for the bkg and one for the rest against black (to ensure proper matting).

Using a bkg element here wouldn't help, especially with mblur.

The vfb background isn't any use with camera animation, as it's is just a static image to test against.

[KushKush]

As I suspected, wine doesn't help when figuring things out late at night

Further research is required.