Adobe After Effects - Manual (Page 661)

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an out-of-memory alert, free memory or reduce the memory requirements of the most memory-intensive layers, and then try again.
You can free memory immediately with commands from the Edit > Purge menu:
All Memory
Image Cache Memory
All Memory & Disk Cache (CC)
Troubleshooting memory issues
Error: “Unable to allocate enough memory to render the current frame....”
Either decrease the memory requirements for the rendering of this frame, or install more RAM.
Error: “Unable to allocate [n] MB of memory....”
Either decrease the memory requirements for the rendering of this frame, or install more RAM.
Error: “Image buffers of size [width]x[height] @ [depth] bpc ([n] GB) exceed internal limits...”
Decrease the memory requirements for the rendering of this frame.
The maximum amount of memory that one frame can occupy is 2 GB.
Error: “Memory allocation of [n] GB exceeds internal limits...”
Decrease the memory requirements for the rendering of this frame.
The maximum size for any single memory allocation is 2 GB.
Online resources about memory and multiprocessing
For a video that demonstrates some of the advantages of a 64-bit After Effects application and how to allocate memory to After Effects and other
applications, see the
Adobe website .
Storage requirements for output files
Use the following formula to determine the number of megabytes required to store one uncompressed frame at full resolution:
(height in pixels) x (width in pixels) x (number of bits per channel) / 2,097,152
The value 2,097,152 is a conversion factor that accounts for the number of bytes per megabyte (2 ), the number of bits per byte (8), and
the number of channels per pixel (4).
Some example frame sizes and memory requirements, in megabytes (MB) per frame:
DV NTSC (720x480) frame in an 8-bpc project: 1.3 MB
D1/DV PAL (720x576) frame in an 8-bpc project: 1.6 MB
HDTV (1920x1080) frame in a 16-bpc project: 16 MB
4K digital cinema (4096x2304) frame in a 32-bpc project: 144 MB
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