Is it possible to open a video file in Python with OpenCV without any delay?

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No, it is not possible to open a video file in Python with OpenCV without any delay. When reading video frames, there will always be some delay between each frame, even when using the fastest possible hardware. This is because of the time taken to read and process each frame in the video. However, this delay can be minimized by optimizing the code for faster processing and hardware, and by using efficient algorithms for video processing.