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Community Manager
July 17, 2026

Now in Public Beta: Disk Caching for Object Matte

  • July 17, 2026
  • 1 ответ
  • 36 просмотров

Hi all! Here today to let you know we've added Disk Caching for Object Matte!

As you know, when you propagate an Object Matte across a clip, After Effects analyzes every frame. Until now, all of that lived in memory. If you closed the project without freezing or ran low on RAM, those results were gone. Reopen the next day and you'd have to wait through the propagation all over again.

With disk caching, Object Matte propagation results are now cached to disk, so the work you've done sticks around. You should also see slimmer .aep files, have an easier time working with large formats (hello 4K!) on low-memory machines, and AE will cache your Object Matte frames in the background while idle.

What's new

Your Object Matte survives across sessions. Propagate a matte, save, and close your project. When you reopen it, the cached frames are still there.
Less pressure on your RAM. Because propagated frames can now live on disk instead of only in memory, After Effects can hold onto more of your work without crowding out everything else you have open. That means fewer purges and smoother playback while you refine a matte.
Faster iteration on long clips. You'll also likely feel a major difference on longer roto shots (where propagation is the most expensive). Frames you've already computed come back from disk instead of being rebuilt from scratch.

Let us know how disk caching is working in your Object Matte workflow!

1 ответ

Community Manager
July 17, 2026

Quick peek under the hood at what makes Object Matte so heavy — and why disk caching is a bigger deal than it might sound 👇


Internally, Object Matte frames are brutal to compute. Every frame is built from the one before it, chained all the way back to the base frame. Also, each frame is far chunkier than a normal frame — a 1080p 8-bit frame with alpha is ~8 MB, while a single Object Matte frame can be ~25–35 MB since it also has to store the tool's "working notes" — confidence maps, edges, and a memory of the detected objects.
 

That's a rough combination for memory and performance. Those big frames fill up RAM quickly and are often first in line to get purged when things get tight. Because they're sequential, the moment the frames you need are gone, you could get stuck re-propagating the whole span from the base frame — minutes of waiting just to get back to where you were.

Caching to disk is what makes that all disappear. A few things that come out of it that are easy to miss:

🧊➡️🔥 Less freezing — you no longer have to freeze the effect just to get a real-time preview.
📉 Slimmer projects, your call — freezing bakes all that Object Matte data into the .aep. Lean on the cache instead and you can skip the gigabyte-sized project files.
▶️ Real-time workflow — once a clip is cached, scrub and preview the whole thing live as you work.
↩️ Undo without fear — step back to an earlier state and your cached frames are still right there.
☕ Caches while you're away — just leave the composition panel open and AE will keep propagating and caching your Object Matte frames in the background while it's idle.

Give it a try and let us know how it feels in your workflow! 🙌