How to properly store video in opencv c++ memory?

Question

C++ / C#

In general, the task is such that a video stream comes from the camera, I process it through some opencv methods, but I need to store a small part of the video in memory for 5-10 seconds. Maybe I searched badly, but the answers that I found that there is no such possibility in opencv.
So I wanted to know if it's okay to just keep a few hundred frames in memory and use them when needed, or is there a simpler solution?