the proxy

[Nakul Arora6283]

please teach me what are proxies and what are its usage in after effects in a comprehensive way 

[thatsmauri]

I think this page below may explain it well:

• https://helpx.adobe.com/after-effects/using/footage-items.html

It starts at "Placeholders and proxies" (scroll down a bit and you won't miss it). Basically, proxies are low quality copies of files that can be used while editing, all with the goal of speeding up your workflow.