UE 4.26 bug. Object ID's rendering only a 2 colors Cryptomatte

E.Tarani · October 10, 2022, 11:26pm

Hello,
I’m having this bug where when I try to render out the object Id pass using movie render que, I just get a couple of colors out of the Id Cryptomatte (Green and yellow), which it’s very annoying.

I’m exactly following the steps on this video: How to Render Cryptomatte in Unreal (NEW in 4.26) - YouTube
I’m using UE 4.26 and it’s a simple scene. Could someone help me out finding what could be the issue here please?

master.00001751×480 83.7 KB

Screenshot_11612×969 66.9 KB
I’m uploading the scene for you to check:
629.03 MB file on MEGA
Really looking forward to a solution.

Thanks!

Albyon1994 · December 10, 2023, 7:56pm

Has anyone found a solution to this? Still happening in 5.2

GregDav1 · April 1, 2024, 10:27pm

Same problem here.

jenmarch36 · August 12, 2024, 2:34pm

It’s been a long time posting this issue, just in case to be help to anyone like me who searched same issue in 2024 using UE5.4

I found the solution and it was so simple.
Green and Yellow image is fine, just check this pass in Nuke. (or anything available EXR format like Photoshop)

In case of Nuke,
add node shuffle and cryptomatte, then you can check the right image.
(Reference is below: