cv.videoWriter(video_name, file_format, fps, isColor)
video_name | 视频名称 |
file_format | 文件格式 |
fps | 帧率 |
isColor | 输出格式,等于0时输出灰度视频,不等于0时输出彩色视频 |
import cv2 as cv
# 调用摄像头
videoCapture = cv.VideoCapture(0)
# 设置帧率
fps = 30
# 获取窗口大小
size = (int(videoCapture.get(cv.CAP_PROP_FRAME_WIDTH)), int(videoCapture.get(cv.CAP_PROP_FRAME_HEIGHT)))
# 调用VideoWrite()函数
videoWrite = cv.VideoWriter('MySaveVideo.avi', cv.VideoWriter_fourcc('I', '4', '2', '0'), fps, size)
# 先获取一帧,用来判断是否成功调用摄像头
success, frame = videoCapture.read()
# 通过设置帧数来设置时间,减一是因为上面已经获取过一帧了
numFrameRemainling = fps * 5 - 1
# 通过循环保存帧
while success and numFrameRemainling > 0:
videoWrite.write(frame)
success, frame = videoCapture.read()
numFrameRemainling -= 1
# 释放摄像头
videoCapture.release()