Opencv获取当前视频长宽、总帧数、fps

Opencv提供了类似java中静态变量的参数，可以通过get(参数)获取当前视频的信息，参数类别还是挺多的，按照需求查手册或源码即可。

源码参数举例

 获取视频帧的长宽

import cv2
if __name__ == '__main__':
    mp4_path ='xhx_utils/images/demo.mp4'
    video = cv2.VideoCapture(mp4_path)
    height = int(video.get(cv2.CAP_PROP_FRAME_HEIGHT))
    width = int(video.get(cv2.CAP_PROP_FRAME_WIDTH))
    print("长:{%d},宽:{%d}"%(height,width))
    video.release()

获取视频的总帧数

import cv2
if __name__ == '__main__':
    mp4_path ='xhx_utils/images/demo.mp4'
    video = cv2.VideoCapture(mp4_path)
    num_frames = int(video.get(cv2.CAP_PROP_FRAME_COUNT))

    print("帧数:"+str(num_frames))
    video.release()

获取视频的FPS

import cv2
if __name__ == '__main__':
    mp4_path ='xhx_utils/images/demo.mp4'
    video = cv2.VideoCapture(mp4_path)
    fps = int(video.get(cv2.CAP_PROP_FPS))
    print("fps:"+str(fps))
    video.release()

还有很多其他的参数可以获取，大家可以按照自己的需求查取。