Currently we are making a film project in UE5.7, for environment effect part, we do stuff in Houdini, and export simulation cache as alembic sequence like image below (If use 1 alembic file for each type of effect which file size is too large), but in UE, I want to find a way to play my alembic sequence in sequencer frame by frame, please help me with finding some method to achieve that, many thanks! The attachment is a sample of alembic sequence files which can be used, it would be better if you guys can provide a sample ue project, thanks a lot! [Image Removed]
Unfortunately, we don’t have a way to combine Alembic Caches together for playback like this. The only recommendation I have is to split your cache into sizable, more manageable chunks rather than single frames. So you’re playing back 3-4 chunks instead of 1.
When you say the file size is too large, are you running into an issue with Unreal importing a file that’s too large? How large is the cache you are dealing with specifically?
Apologies for the delay, Epic has been on summer break. There is no method in Unreal to handle combining the abc files, this is something you would need to handle outside the engine. Overall, we just don’t have any methods to handle files at these sizes.
We made a building destruction simulation, the length for this effect is around 1000 frames in all, if I export the sim cache as 1 abc file which the file size will be 500 GBs, which in sequencer the playback speed and render speed will be extremely low, also the GPU RAM will exceed. As you mentioned above, split them into small abc files, could you please tell me how to place and play abc files instead of 1 abc file in sequencer after I cut my whole combined abc file? I show one of my idea is keyed spawn parameter for each abc file in sequencer otherwise, I will run out of GPU RAM, could you tell me more ideas or the corrent way to achieve this? Many thanks!
If you can provide me a blueprint way to achieve this will be super helpful (you can use my abc zip files provided in this post), my way like image above will make sequencer unreadable and frozen after thousands of files…