Hello.

I am having a problem in exporting channels in RLA/RPF file formats from max. Max saves the RLA/RPF file but doesn’t save the channels in it. I want to save Z Depth, Material ID, Object ID, Coverage, etc. and for that I selected these channels from the channels list in the RPF Image File Format dialog box.

I am attaching a simple max file (max 201064bit) so that you can see what’s the actual problem in it. I would be very much glad to know the reason.

Regards.

	Attachment
rpf_max201064bit.zip

Thank you.
Sorry for replying late. I was a bit busy last few days.
Well I am using After Effects CS2. But that’s not important I guess because max itself doesn’t show any channel in the saved rpf file when I select it and hit the info button present in the Save Images dialog box.

You should be able to select the channel to view in the RFW or View Image File window, from the drop-down list that says RGB Alpha by default. Also, right-click dragging over the image should show pixel stats, does this work? Can you access the channels in AE?

Exactly, you got it!
After rendering an image, if I right click and see the channels, none of them are displayed. It shows N/A in all the channels in the ‘Extra Pixel Data’ group. So what should I do now?

I just opened the file you posted, and noticed that it is not set up to save a file.  If you don’t set a file to save as RPF in the Render Dialog, it will not render out the additional channels.  If you are just trying to save your RPF from the rendered frame window, the additional channels will NOT save.

3DS Max Design 2011 64-bit - Advantage Pack
Dell Precision T5500, Dual Six Core Xeon X5650 @ 2.67GHz, nVidia Quadro 5000, 24 GB RAM, Win 7 Enterprise 64-bit
Minneapolis, MN, USA

	Attachment
rpf_save.zip

Thanks a lot!
You are right. I was doing the same mistake by saving the image from the Render window directly. Now I did as you suggested & my problem is solved.
Thanks once again.
Regards.