opencv把视频在垂直方向上翻转每一帧，播放视频，并保存视频

import numpy as npimport cv2 as cv# 下面的代码把视频在垂直方向上翻转每一帧，并保存视频。cap = cv.VideoCapture('Video.mp4')w = int(cap.get(cv.CAP_PROP_FRAME_WIDTH))# 848h = int(cap.get(cv.CAP_PROP_FRAME_HEIGHT))# 476# Define th

FreshHhand

942人浏览 · 2021-12-08 12:12:15

FreshHhand · 2021-12-08 12:12:15 发布

import numpy as np
import cv2 as cv

# 下面的代码把视频在垂直方向上翻转每一帧，并保存视频。
cap = cv.VideoCapture('Video.mp4')
w = int(cap.get(cv.CAP_PROP_FRAME_WIDTH))  # 848
h = int(cap.get(cv.CAP_PROP_FRAME_HEIGHT))  # 476
# Define the codec and create VideoWriter object
fourcc = cv.VideoWriter_fourcc(*'XVID')
out = cv.VideoWriter('output.avi', fourcc, 20.0, (w, h))
while cap.isOpened():
    ret, frame = cap.read()
    if not ret:
        print("Can't receive frame (stream end?). Exiting ...")
        break
    frame = cv.flip(frame, 0)
    # write the flipped frame
    out.write(frame)
    cv.imshow('frame', frame)
    if cv.waitKey(1) == ord('q'):        # 按下q键后break。cv2.waitKey(1)在有按键按下的时候返回按键的ASCII值，否则返回-1
        break
# Release everything if job is finished
cap.release()
out.release()
cv.destroyAllWindows()