If you are doing heavy lifting, look into the V4L2 memory mapping ( mmap ) to pass frames directly to the GPU. Helpful Resources
Using a Pascal wrapper for OpenCV, your core code to open a camera and show a window would look like this: Pascal Webcam Raspberry
Since Pascal isn't the "standard" choice for Pi projects like Python is, you get the benefit of much faster execution speeds, which is great for image processing. 1. Set Up Your Environment If you are doing heavy lifting, look into
Best for simple "capture and save" tasks. This interacts directly with the Linux kernel's video drivers. 3. Basic Capture Logic (OpenCV) If you are doing heavy lifting