topic Re: Bifrost Graph - Random frame from animated abc sequence on each instances in Bifrost Forum

Bifrost Graph - Random frame from animated abc sequence on each instances

g_godet — Wed, 04 Mar 2026 07:08:29 GMT

Hello there,

I have an animated alembic sequence file, which I import in Bifrost graph then scatter.

I want the alembic sequences to have random offset in the animation sequence.

I've generated a random value property for each points but I don't know how to use it to offset the animation now. Can I feed the value after the time node to add the offset?

Any helps appreciated 🙂

Screen of the graph attached + the bifrost scene

Re: Bifrost Graph - Random frame from animated abc sequence on each instances

sepu6 — Wed, 04 Mar 2026 20:41:11 GMT

if you are in the BF discord check this out

https://discord.com/channels/872260298508222534/1172235893646557254

That's easiest

Re: Bifrost Graph - Random frame from animated abc sequence on each instances

g_godet — Thu, 05 Mar 2026 16:03:27 GMT

Thanks for the reply @sepu6

But I'm not using Arnold (Redshift here) so I'm using read_alembic node instead of Arnold_Alembic_Instance.

And there is no Frame property in the basic alembic node, unfortunatelly.

Re: Bifrost Graph - Random frame from animated abc sequence on each instances

sepu6 — Thu, 05 Mar 2026 16:09:37 GMT

There is another way but is a little more cumbersome. I'll post an example a little later, also keep in mind that you gonna have to bake your instances since RS does not support it.

Re: Bifrost Graph - Random frame from animated abc sequence on each instances

g_godet — Thu, 05 Mar 2026 16:28:22 GMT

Thanks, Yes but maybe exporting as USD would keep the instances to be used in Redshift.

Re: Bifrost Graph - Random frame from animated abc sequence on each instances

sepu6 — Wed, 11 Mar 2026 19:17:55 GMT

Forgot to post this earlier

https://forums.autodesk.com/t5/bifrost-forum/how-to-instance-with-bifrost-and-add-animation-delay-random/m-p/10890129#M6542

Re: Bifrost Graph - Random frame from animated abc sequence on each instances

g_godet — Sun, 15 Mar 2026 13:04:33 GMT

Thank you!