Replacing and substituting footage

After Effects offers a number of ways to replace and substitute footage in a composition. Using proxies or other items in place of original footage can be useful when the footage you want to use is not available. Also, when you are working with large, high-resolution items, you may want to use low-resolution proxies to work more quickly and efficiently.

Related Subtopics:

Replacing footage throughout a project
Replacing footage of one or more layers
About placeholders and proxies
Working with missing source footage
Substituting a placeholder for footage
Substituting a low-resolution proxy for footage
Identifying proxy items in the Project window