Cache video into the memory to increase frame read speed

[pozitronik]

Something like

import cv2
import io

class MemoryStream:
    def __init__(self, data):
        self.buffer = io.BytesIO(data)

    def read(self, size=-1):
        return self.buffer.read(size)

    def seek(self, offset, whence=0):
        return self.buffer.seek(offset, whence)

    def tell(self):
        return self.buffer.tell()


with open('your_video.mp4', 'rb') as video_file:
    video_data = video_file.read()

memory_file_object = MemoryStream(video_data)
cap = cv2.VideoCapture(memory_file_object)