vrimg2exr converter

[n6]

thanks a lot! will try it

[vlado]

I've updated the vrimg2exr converter so that now it can convert very large files without problems - a test case was a 10000 x 10000 6 GB .vrimg file. The resulting .exr even opened without problems in 3dsmax 8

Link is the same as in the original message:
http://www.spot3d.com/vray/help/VRay...2exr_14703.rar

Also, an option "-bufsize" has been added to control memory usage during the conversion. Typically, more memory means faster conversion.

Best regards,
Vlado

[rfellers]

I downloaded from your link, but the time stamp on all the files appear to be the same. '-bufsize' is also not recognized.

Ryan

[vlado]

The link works fine here... maybe your browser has cached the old version.

Best regards,
Vlado

[panthon]

Is it possible to export the renderid and the objectid channels using this conversor and vray 1.47.03?

I only get black images...We need the id channels in order to select particular objects in photoshop... The other channels (diffuse, reflection, etc...) export without problems, but the id related ones refuse to do it. Any ideas?

[vlado]

Is it possible to export the renderid and the objectid channels using this conversor and vray 1.47.03?

I only get black images...We need the id channels in order to select particular objects in photoshop... The other channels (diffuse, reflection, etc...) export without problems, but the id related ones refuse to do it. Any ideas?

They will be exported, but as integer channels, and not as RGB ones. I'm not sure of which applications would allow you to read an integer channel from the .exr file - the only one I know of is Nuke. Anyways, you can use the exrheader utility to check if the channels are actually present in the .exr file.

Best regards,
Vlado

[panthon]

Thanks for your answer Vlado.

I Know these channels are integer, but i think i´ve read somewhere vray can create a RGB representation of this integer values thus being able to save a RGB image. Maybe i´m wrong and this is a never version feature or maybe it doesn´t exist at all.

I´m able to render a rpf file, get into combustion, add a show g buffer operator to create a RGB render of the object id channel, which can be used in photoshop to mask objects. The problem is that I won´t have access to combustion to do that, so it would be better to have a rgb representation of this particular channel right from vray, providing that photoshop is not able to open rpf files.

Thanks!

[mike.edel]

you can split rpf files into seperate channels using a maxscript by "scriptgod" bobo:
http://www.scriptspot.com/start.asp?p=download&ID=267
works with max 8 afaik
put it in a script folder
run it via the maxscript listener

you will then find it in
customize-->customize ui--> category-->bobo's tools-->channelextractor
you can pull it on a toolbar

works with rpf file or rpf sequences
it's a real life-saver for people without combustion...

direct link:
http://www.scriptspot.com/bobo/mxs3/...xtractor_02.ms

i've successfully used it to extract z-depth passes from rpf files

mike

[panthon]

Wow, i didn´t think such a thing was even possible. Thanks mike.edel. I'm going to test it right now !

[jacksc02]

vlado, does the vrimgtoexr work on builds newer than 1.47?

[mike.edel]

well, since max is able to save the channels it should also be able to read them
the function is

getChannelAsMask

according to the maxscript help it only returns 8-bit images, i am currently testing this (i used to get 16bit zdepth out of bobo's script)

[efx2004]

Is there a new version for RC2?

When I try to convert, I am getting 'Failed to write pixel data to image file "x.exr". No frame buffer specified as pixel data source" message.

Thanks.

[vlado]

Is there a new version for RC2?

When I try to convert, I am getting 'Failed to write pixel data to image file "x.exr". No frame buffer specified as pixel data source" message.

Thanks.

An updated version of the converter is included in the RC installer itself. Go to Start menu > Programs > Chaos Group > V-Ray for 3dsmax > Tools > VRImg to OpenEXR converter

Best regards
Vlado

[efx2004]

Thanks Vlado! RC2 is great!

[flipside]

Hi,

If you only specify the file name, isn't the converter supposed to extract all channels? Or do I have to enter them all manually?