opencv video reader/writer

opencv_read_write_video.py

import cv2
from pathlib import Path

path_to_video = Path("some/path/to/video.mp4")

video_handler = cv2.VideoCapture(str(path_to_video))

n_frames = int(video_handler.get(cv2.CAP_PROP_FRAME_COUNT))
w = int(video_handler.get(cv2.CAP_PROP_FRAME_WIDTH))
h = int(video_handler.get(cv2.CAP_PROP_FRAME_HEIGHT))
fps = video_handler.get(cv2.CAP_PROP_FPS)

fourcc = cv2.VideoWriter_fourcc(*'mp4v')
video_writer = cv2.VideoWriter(str(path_to_save_video), fourcc, fps, (w, h))