Is there a max number of frames for image integration?
The ImageIntegration tool has no specific limit. The only practical limit is the maximum number of simultaneous open files allowed by the operating system:
Linux and FreeBSD: The default limit is 1024 files, but it can be increased very easily with the ulimit command. Non-privileged users typically can increase the limit up to 2048 files. With root privileges the limit can be set to any number with ulimit.
Windows: The maximum number of open files is 2048. This limit cannot be increased, and most likely Windows will impose a lower limit under the hood.
OS X: The default limit is 256 open files. The ulimit command does not work. Recently a user has found
a solution on OS X 10.10 that involves creating a system daemon script.