RenderElements to Exr

[LarsSonparsson]

We are playing around with using layered exr. files at the moment and I was hoping for some hints and tips on working with layered exrs in Afterfxs.

Our current process is to output layered exrs. directly (i.e no vrimg file) import to afterfx and use proexr to read the extra data which works but is damn slow.

One of the guys here did output some vrimg files yesterday and converted it to exr using the vrimg2exr convertor and loaded those files into afterfx but said that he saw no real speed improvement.
Does that sound correct? follow from this thread the vrimg convertor outputs a scanline exr. which I thought should be faster.

So I suppose my first question would be does vrimg convertor convert vrimg file to a scanline exr by default or do you have to add something to the cmdline to state you want a scanline exr?

Is the Proexr. plugin the only way in Afterfx to read the extra data in an layered exr. file?

Anyone who is using Afterfx with layered exrs. what is your typical workflow, can you resave the exrs from Afterfx as a scanline exr. (as you can do with nuke) and do you get a significant speed increase by doing this?

I might be stupid, but how do you render layered exr from vray?
Not converting vrimg. I just started to play with Autodesk Toxik.
It supports layered exrs 100%, but i just don't know how to render those.

[rivoli]

I might be stupid, but how do you render layered exr from vray?

you can either output to vray image format, and then convert the files to single exrs with all elements as layers, or you can write .exr instead of .vrimg in the vray image file box.

[LarsSonparsson]

Hmm... so I was stupid.

In my test setup I had unsupported channels for exr, thats
why it didn't work. Do we have anykind of list what vray renderelements
are supported?

[instinct]

havent seen any that are not supported so far. Wich ones did you use ??

Regards,
Thorsten

[vance3d]

Here is a link to the free part of pro_exr that works in after effects. I've used it for extracting z depth and it worked well for that.

http://www.fnordware.com/OpenEXR/


V Miller

[LarsSonparsson]

I used many. But I think it was extratex causing troubles. Dunno.