Need help with image sequence as a texture in Karma -

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Hi,

I I'm getting this message in Karma when I try to use an image sequence.
Cannot have channels which depend on time.
I know there is some limitation on how Karma works but I'm rendering a tv screen and I kinda need to get a sequence on it. Is there some workaround or something to get that to work?

Thanks,
Pete


Edited by peteski - July 23, 2025 04:34:37

Attachments:
Screenshot 2025-07-23 at 6.31.52pm.png (89.6 KB)
Screenshot 2025-07-23 at 6.28.25pm.png (99.8 KB)
Screenshot 2025-07-23 at 6.31.56pm.png (103.2 KB)

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There is a way to set that up in LOPs, but this older approach from /obj and /out still works.
Edited by Enivob - July 23, 2025 08:36:50

Attachments:
karma_image_sequence.gif (521.1 KB)
ap_kr_karma_texture_sequence.hiplc (668.9 KB)

Using Houdini Indie 20.5
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nVidia 3060RTX 12BG RAM.
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You need to promote the file parameter one step up, and then use an Edit properties on the promoted parameter to choose your image sequence. Make sure Edit Properties is set to sample all rendered frames.
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Awesome, thankyou!
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Hey, just figured this out too. You can load the image sequence in cops and send that directly to the mtlxImage node and it works fine.
(for anyone else who's stuck on this)
Edited by peteski - July 25, 2025 19:30:05
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peteski
Hey, just figured this out too. You can load the image sequence in cops and send that directly to the mtlxImage node and it works fine.
(for anyone else who's stuck on this)

The danger of that workflow, is when you export out the USD stage, it's going to want to "bake" that temporary COPs data somewhere.
Versus just referencing a texture file on disk. I think it's okay if you're only planning on directly rendering then and there,
but for any type of offline, send to the farm, more on-pipe way of working it would cause you issues.

L
I'm not lying, I'm writing fiction with my mouth.
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Ahh yep. I’ll probably want to do some cloud renders so that’s good to know!
Thanks!
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