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Should I save frames as video or a sequence of images?

Hi I am newbie to both OpenCV and Python. I previously tried using Matlab's built-in functions to interact with the 60fps camera and save the whole video, but it created a memory sink and froze the whole program. Now I am thinking to switch using OpenCV/Python, but just read posts suggesting that saving each frame as one image could create a memory issue. I am wondering what is better when using OpenCV and Python? Thanks a lot!