Problem with geometry cache in movie render queue

Hi there,

I have a problem that I havnt been able to solve for a while. Ive imported an alembic geometry cache in to my scen, multiple infact. Im then controlling the timings of these in the sequencer, everything works fine when I scrub the animation and view it in the viewport, howerver when i render it out all of the tracks seem to play from the start and not respect how i have arranged it in the seuencer, they are looping despite looping being ticked off in the poperties.

Very frustrating, is there a fix or workaround or anything i can do to be able to time everything in unreal?

Thanks,
Paul

2 Likes

anyone?

1 Like

I am facing the same problem too for a few days now and I can’t find a solution

yeah, still no solution for me!! I even re simulated everything in 3ds max withe correct timmings but then it wouldnt import the alembic file if the sim doesnt start at frame 0!

I didnt have time to investigate further.

Hi! I’m having the same problem with ue5.1. Any solution?

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This solution does not work. I feel like alembic is not production ready with lots of bugs.
Unfortunately I can not seem to be able to have the alembic animation to play when I want and how I want (once and keep state of last frame).
Tried pre-roll, post-roll, keep state, project default, etc.

most likely you need to adjust the end frame. I export with 25fps, also set up my sequencer to use 25fps, but Unreal seems to calculate a bit different. There is always a "" at the end of my frames, so instead of 100-250 it says 100-250.
If I simply remove the “*”, the post roll works like intended.

I use this all the time, its not broken, you just gotta check your import/export settings as well as the things I pointed out.

You can even retime alembics pretty well (if they don´t have changing topology).

But also, depending on what exactly you´re animating, alembic isn´t the best format to do so.
For simple transform animations, datasmith works just fine and is much lighter.

I use alembic ONLY for deformations or changing topology like fluid sims.

4 Likes

Ok, will try to adjust the end frame. I also use 25fps. I used alembic because the there is change in topology (I used an animated slice, removing top geometry).

Thanks.

It worked. Thank you very much. that “*” was the issue.

Glad it helped!

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make it spawnable and add key frame where you want to start that might help